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css_parser_test.go
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css_parser_test.go
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package css_parser
import (
"fmt"
"testing"
"github.com/evanw/esbuild/internal/compat"
"github.com/evanw/esbuild/internal/config"
"github.com/evanw/esbuild/internal/css_printer"
"github.com/evanw/esbuild/internal/logger"
"github.com/evanw/esbuild/internal/test"
)
func expectPrintedCommon(t *testing.T, name string, contents string, expected string, expectedLog *string, options config.Options) {
t.Helper()
t.Run(name, func(t *testing.T) {
t.Helper()
log := logger.NewDeferLog(logger.DeferLogNoVerboseOrDebug, nil)
tree := Parse(log, test.SourceForTest(contents), Options{
MinifySyntax: options.MinifySyntax,
MinifyWhitespace: options.MinifyWhitespace,
UnsupportedCSSFeatures: options.UnsupportedCSSFeatures,
})
msgs := log.Done()
text := ""
if expectedLog != nil {
for _, msg := range msgs {
text += msg.String(logger.OutputOptions{}, logger.TerminalInfo{})
}
test.AssertEqualWithDiff(t, text, *expectedLog)
} else {
for _, msg := range msgs {
if msg.Kind == logger.Error {
text += msg.String(logger.OutputOptions{}, logger.TerminalInfo{})
}
}
test.AssertEqualWithDiff(t, text, "")
}
result := css_printer.Print(tree, css_printer.Options{
MinifyWhitespace: options.MinifyWhitespace,
})
test.AssertEqualWithDiff(t, string(result.CSS), expected)
})
}
func expectParseError(t *testing.T, contents string, expected string, expectedLog string) {
t.Helper()
expectPrintedCommon(t, contents, contents, expected, &expectedLog, config.Options{})
}
func expectParseErrorMinify(t *testing.T, contents string, expected string, expectedLog string) {
t.Helper()
expectPrintedCommon(t, contents+" [minify]", contents, expected, &expectedLog, config.Options{
MinifyWhitespace: true,
})
}
func expectParseErrorMangle(t *testing.T, contents string, expected string, expectedLog string) {
t.Helper()
expectPrintedCommon(t, contents+" [mangle]", contents, expected, &expectedLog, config.Options{
MinifySyntax: true,
})
}
func expectPrinted(t *testing.T, contents string, expected string) {
t.Helper()
expectPrintedCommon(t, contents, contents, expected, nil, config.Options{})
}
func expectPrintedLower(t *testing.T, contents string, expected string) {
t.Helper()
expectPrintedCommon(t, contents+" [lower]", contents, expected, nil, config.Options{
UnsupportedCSSFeatures: ^compat.CSSFeature(0),
})
}
func expectPrintedMinify(t *testing.T, contents string, expected string) {
t.Helper()
expectPrintedCommon(t, contents+" [minify]", contents, expected, nil, config.Options{
MinifyWhitespace: true,
})
}
func expectPrintedMangle(t *testing.T, contents string, expected string) {
t.Helper()
expectPrintedCommon(t, contents+" [mangle]", contents, expected, nil, config.Options{
MinifySyntax: true,
})
}
func expectPrintedLowerMangle(t *testing.T, contents string, expected string) {
t.Helper()
expectPrintedCommon(t, contents+" [mangle]", contents, expected, nil, config.Options{
UnsupportedCSSFeatures: ^compat.CSSFeature(0),
MinifySyntax: true,
})
}
func expectPrintedMangleMinify(t *testing.T, contents string, expected string) {
t.Helper()
expectPrintedCommon(t, contents+" [mangle, minify]", contents, expected, nil, config.Options{
MinifySyntax: true,
MinifyWhitespace: true,
})
}
func TestSingleLineComment(t *testing.T) {
expectParseError(t, "a, // a\nb // b\n{}", "a, // a b // b {\n}\n",
"<stdin>: WARNING: Comments in CSS use \"/* ... */\" instead of \"//\"\n"+
"<stdin>: WARNING: Comments in CSS use \"/* ... */\" instead of \"//\"\n")
expectParseError(t, "a, ///// a /////\n{}", "a, ///// a ///// {\n}\n",
"<stdin>: WARNING: Comments in CSS use \"/* ... */\" instead of \"//\"\n")
}
func TestEscapes(t *testing.T) {
// TIdent
expectPrinted(t, "a { value: id\\65nt }", "a {\n value: ident;\n}\n")
expectPrinted(t, "a { value: \\69 dent }", "a {\n value: ident;\n}\n")
expectPrinted(t, "a { value: \\69dent }", "a {\n value: \u69DEnt;\n}\n")
expectPrinted(t, "a { value: \\2cx }", "a {\n value: \\,x;\n}\n")
expectPrinted(t, "a { value: \\,x }", "a {\n value: \\,x;\n}\n")
expectPrinted(t, "a { value: x\\2c }", "a {\n value: x\\,;\n}\n")
expectPrinted(t, "a { value: x\\, }", "a {\n value: x\\,;\n}\n")
expectPrinted(t, "a { value: x\\0 }", "a {\n value: x\uFFFD;\n}\n")
expectPrinted(t, "a { value: x\\1 }", "a {\n value: x\\\x01;\n}\n")
expectPrinted(t, "a { value: x\x00 }", "a {\n value: x\uFFFD;\n}\n")
expectPrinted(t, "a { value: x\x01 }", "a {\n value: x\x01;\n}\n")
// THash
expectPrinted(t, "a { value: #0h\\61sh }", "a {\n value: #0hash;\n}\n")
expectPrinted(t, "a { value: #\\30hash }", "a {\n value: #0hash;\n}\n")
expectPrinted(t, "a { value: #\\2cx }", "a {\n value: #\\,x;\n}\n")
expectPrinted(t, "a { value: #\\,x }", "a {\n value: #\\,x;\n}\n")
// THashID
expectPrinted(t, "a { value: #h\\61sh }", "a {\n value: #hash;\n}\n")
expectPrinted(t, "a { value: #\\68 ash }", "a {\n value: #hash;\n}\n")
expectPrinted(t, "a { value: #\\68ash }", "a {\n value: #\u068Ash;\n}\n")
expectPrinted(t, "a { value: #x\\2c }", "a {\n value: #x\\,;\n}\n")
expectPrinted(t, "a { value: #x\\, }", "a {\n value: #x\\,;\n}\n")
// TFunction
expectPrinted(t, "a { value: f\\6e() }", "a {\n value: fn();\n}\n")
expectPrinted(t, "a { value: \\66n() }", "a {\n value: fn();\n}\n")
expectPrinted(t, "a { value: \\2cx() }", "a {\n value: \\,x();\n}\n")
expectPrinted(t, "a { value: \\,x() }", "a {\n value: \\,x();\n}\n")
expectPrinted(t, "a { value: x\\2c() }", "a {\n value: x\\,();\n}\n")
expectPrinted(t, "a { value: x\\,() }", "a {\n value: x\\,();\n}\n")
// TString
expectPrinted(t, "a { value: 'a\\62 c' }", "a {\n value: \"abc\";\n}\n")
expectPrinted(t, "a { value: 'a\\62c' }", "a {\n value: \"a\u062C\";\n}\n")
expectPrinted(t, "a { value: '\\61 bc' }", "a {\n value: \"abc\";\n}\n")
expectPrinted(t, "a { value: '\\61bc' }", "a {\n value: \"\u61BC\";\n}\n")
expectPrinted(t, "a { value: '\\2c' }", "a {\n value: \",\";\n}\n")
expectPrinted(t, "a { value: '\\,' }", "a {\n value: \",\";\n}\n")
expectPrinted(t, "a { value: '\\0' }", "a {\n value: \"\uFFFD\";\n}\n")
expectPrinted(t, "a { value: '\\1' }", "a {\n value: \"\x01\";\n}\n")
expectPrinted(t, "a { value: '\x00' }", "a {\n value: \"\uFFFD\";\n}\n")
expectPrinted(t, "a { value: '\x01' }", "a {\n value: \"\x01\";\n}\n")
// TURL
expectPrinted(t, "a { value: url(a\\62 c) }", "a {\n value: url(abc);\n}\n")
expectPrinted(t, "a { value: url(a\\62c) }", "a {\n value: url(a\u062C);\n}\n")
expectPrinted(t, "a { value: url(\\61 bc) }", "a {\n value: url(abc);\n}\n")
expectPrinted(t, "a { value: url(\\61bc) }", "a {\n value: url(\u61BC);\n}\n")
expectPrinted(t, "a { value: url(\\2c) }", "a {\n value: url(,);\n}\n")
expectPrinted(t, "a { value: url(\\,) }", "a {\n value: url(,);\n}\n")
// TAtKeyword
expectPrinted(t, "a { value: @k\\65yword }", "a {\n value: @keyword;\n}\n")
expectPrinted(t, "a { value: @\\6b eyword }", "a {\n value: @keyword;\n}\n")
expectPrinted(t, "a { value: @\\6beyword }", "a {\n value: @\u06BEyword;\n}\n")
expectPrinted(t, "a { value: @\\2cx }", "a {\n value: @\\,x;\n}\n")
expectPrinted(t, "a { value: @\\,x }", "a {\n value: @\\,x;\n}\n")
expectPrinted(t, "a { value: @x\\2c }", "a {\n value: @x\\,;\n}\n")
expectPrinted(t, "a { value: @x\\, }", "a {\n value: @x\\,;\n}\n")
// TDimension
expectPrinted(t, "a { value: 10\\65m }", "a {\n value: 10em;\n}\n")
expectPrinted(t, "a { value: 10p\\32x }", "a {\n value: 10p2x;\n}\n")
expectPrinted(t, "a { value: 10e\\32x }", "a {\n value: 10\\65 2x;\n}\n")
expectPrinted(t, "a { value: 10e-\\32x }", "a {\n value: 10\\65-2x;\n}\n")
expectPrinted(t, "a { value: 10E\\32x }", "a {\n value: 10\\45 2x;\n}\n")
expectPrinted(t, "a { value: 10E-\\32x }", "a {\n value: 10\\45-2x;\n}\n")
expectPrinted(t, "a { value: 10e1e\\32x }", "a {\n value: 10e1e2x;\n}\n")
expectPrinted(t, "a { value: 10e1e-\\32x }", "a {\n value: 10e1e-2x;\n}\n")
expectPrinted(t, "a { value: 10e1E\\32x }", "a {\n value: 10e1E2x;\n}\n")
expectPrinted(t, "a { value: 10e1E-\\32x }", "a {\n value: 10e1E-2x;\n}\n")
expectPrinted(t, "a { value: 10E1e\\32x }", "a {\n value: 10E1e2x;\n}\n")
expectPrinted(t, "a { value: 10E1e-\\32x }", "a {\n value: 10E1e-2x;\n}\n")
expectPrinted(t, "a { value: 10E1E\\32x }", "a {\n value: 10E1E2x;\n}\n")
expectPrinted(t, "a { value: 10E1E-\\32x }", "a {\n value: 10E1E-2x;\n}\n")
expectPrinted(t, "a { value: 10\\32x }", "a {\n value: 10\\32x;\n}\n")
expectPrinted(t, "a { value: 10\\2cx }", "a {\n value: 10\\,x;\n}\n")
expectPrinted(t, "a { value: 10\\,x }", "a {\n value: 10\\,x;\n}\n")
expectPrinted(t, "a { value: 10x\\2c }", "a {\n value: 10x\\,;\n}\n")
expectPrinted(t, "a { value: 10x\\, }", "a {\n value: 10x\\,;\n}\n")
// This must remain unescaped. See https://github.com/evanw/esbuild/issues/2677
expectPrinted(t, "@font-face { unicode-range: U+0e2e-0e2f }", "@font-face {\n unicode-range: U+0e2e-0e2f;\n}\n")
// RDeclaration
expectPrintedMangle(t, "a { c\\6flor: #f00 }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "a { \\63olor: #f00 }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "a { \\2color: #f00 }", "a {\n \\,olor: #f00;\n}\n")
expectPrintedMangle(t, "a { \\,olor: #f00 }", "a {\n \\,olor: #f00;\n}\n")
// RUnknownAt
expectPrinted(t, "@unknown;", "@unknown;\n")
expectPrinted(t, "@u\\6eknown;", "@unknown;\n")
expectPrinted(t, "@\\75nknown;", "@unknown;\n")
expectPrinted(t, "@u\\2cnknown;", "@u\\,nknown;\n")
expectPrinted(t, "@u\\,nknown;", "@u\\,nknown;\n")
expectPrinted(t, "@\\2cunknown;", "@\\,unknown;\n")
expectPrinted(t, "@\\,unknown;", "@\\,unknown;\n")
// RAtKeyframes
expectPrinted(t, "@k\\65yframes abc { from {} }", "@keyframes abc {\n from {\n }\n}\n")
expectPrinted(t, "@keyframes \\61 bc { from {} }", "@keyframes abc {\n from {\n }\n}\n")
expectPrinted(t, "@keyframes a\\62 c { from {} }", "@keyframes abc {\n from {\n }\n}\n")
expectPrinted(t, "@keyframes abc { \\66rom {} }", "@keyframes abc {\n from {\n }\n}\n")
expectPrinted(t, "@keyframes a\\2c c { \\66rom {} }", "@keyframes a\\,c {\n from {\n }\n}\n")
expectPrinted(t, "@keyframes a\\,c { \\66rom {} }", "@keyframes a\\,c {\n from {\n }\n}\n")
// RAtNamespace
expectPrinted(t, "@n\\61mespace ns 'path';", "@namespace ns \"path\";\n")
expectPrinted(t, "@namespace \\6es 'path';", "@namespace ns \"path\";\n")
expectPrinted(t, "@namespace ns 'p\\61th';", "@namespace ns \"path\";\n")
expectPrinted(t, "@namespace \\2cs 'p\\61th';", "@namespace \\,s \"path\";\n")
expectPrinted(t, "@namespace \\,s 'p\\61th';", "@namespace \\,s \"path\";\n")
// CompoundSelector
expectPrinted(t, "* {}", "* {\n}\n")
expectPrinted(t, "*|div {}", "*|div {\n}\n")
expectPrinted(t, "\\2a {}", "\\* {\n}\n")
expectPrinted(t, "\\2a|div {}", "\\*|div {\n}\n")
expectPrinted(t, "\\2d {}", "\\- {\n}\n")
expectPrinted(t, "\\2d- {}", "-- {\n}\n")
expectPrinted(t, "-\\2d {}", "-- {\n}\n")
expectPrinted(t, "\\2d 123 {}", "\\-123 {\n}\n")
// SSHash
expectPrinted(t, "#h\\61sh {}", "#hash {\n}\n")
expectPrinted(t, "#\\2chash {}", "#\\,hash {\n}\n")
expectPrinted(t, "#\\,hash {}", "#\\,hash {\n}\n")
expectPrinted(t, "#\\2d {}", "#\\- {\n}\n")
expectPrinted(t, "#\\2d- {}", "#-- {\n}\n")
expectPrinted(t, "#-\\2d {}", "#-- {\n}\n")
expectPrinted(t, "#\\2d 123 {}", "#\\-123 {\n}\n")
expectPrinted(t, "#\\61hash {}", "#ahash {\n}\n")
expectPrinted(t, "#\\30hash {}", "#\\30hash {\n}\n")
expectPrinted(t, "#0\\2chash {}", "#0\\,hash {\n}\n")
expectPrinted(t, "#0\\,hash {}", "#0\\,hash {\n}\n")
// SSClass
expectPrinted(t, ".cl\\61ss {}", ".class {\n}\n")
expectPrinted(t, ".\\2c class {}", ".\\,class {\n}\n")
expectPrinted(t, ".\\,class {}", ".\\,class {\n}\n")
// SSPseudoClass
expectPrinted(t, ":pseudocl\\61ss {}", ":pseudoclass {\n}\n")
expectPrinted(t, ":pseudo\\2c class {}", ":pseudo\\,class {\n}\n")
expectPrinted(t, ":pseudo\\,class {}", ":pseudo\\,class {\n}\n")
expectPrinted(t, ":pseudo(cl\\61ss) {}", ":pseudo(class) {\n}\n")
expectPrinted(t, ":pseudo(cl\\2css) {}", ":pseudo(cl\\,ss) {\n}\n")
expectPrinted(t, ":pseudo(cl\\,ss) {}", ":pseudo(cl\\,ss) {\n}\n")
// SSAttribute
expectPrinted(t, "[\\61ttr] {}", "[attr] {\n}\n")
expectPrinted(t, "[\\2c attr] {}", "[\\,attr] {\n}\n")
expectPrinted(t, "[\\,attr] {}", "[\\,attr] {\n}\n")
expectPrinted(t, "[attr\\7e=x] {}", "[attr\\~=x] {\n}\n")
expectPrinted(t, "[attr\\~=x] {}", "[attr\\~=x] {\n}\n")
expectPrinted(t, "[attr=\\2c] {}", "[attr=\",\"] {\n}\n")
expectPrinted(t, "[attr=\\,] {}", "[attr=\",\"] {\n}\n")
expectPrinted(t, "[attr=\"-\"] {}", "[attr=\"-\"] {\n}\n")
expectPrinted(t, "[attr=\"--\"] {}", "[attr=--] {\n}\n")
expectPrinted(t, "[attr=\"-a\"] {}", "[attr=-a] {\n}\n")
expectPrinted(t, "[\\6es|attr] {}", "[ns|attr] {\n}\n")
expectPrinted(t, "[ns|\\61ttr] {}", "[ns|attr] {\n}\n")
expectPrinted(t, "[\\2cns|attr] {}", "[\\,ns|attr] {\n}\n")
expectPrinted(t, "[ns|\\2c attr] {}", "[ns|\\,attr] {\n}\n")
expectPrinted(t, "[*|attr] {}", "[*|attr] {\n}\n")
expectPrinted(t, "[\\2a|attr] {}", "[\\*|attr] {\n}\n")
}
func TestString(t *testing.T) {
expectPrinted(t, "a:after { content: 'a\\\rb' }", "a:after {\n content: \"ab\";\n}\n")
expectPrinted(t, "a:after { content: 'a\\\nb' }", "a:after {\n content: \"ab\";\n}\n")
expectPrinted(t, "a:after { content: 'a\\\fb' }", "a:after {\n content: \"ab\";\n}\n")
expectPrinted(t, "a:after { content: 'a\\\r\nb' }", "a:after {\n content: \"ab\";\n}\n")
expectPrinted(t, "a:after { content: 'a\\62 c' }", "a:after {\n content: \"abc\";\n}\n")
expectParseError(t, "a:after { content: '\r' }", "a:after {\n content: '\n ' }\n ;\n}\n",
`<stdin>: WARNING: Unterminated string token
<stdin>: WARNING: Expected "}" to go with "{"
<stdin>: NOTE: The unbalanced "{" is here:
<stdin>: WARNING: Unterminated string token
`)
expectParseError(t, "a:after { content: '\n' }", "a:after {\n content: '\n ' }\n ;\n}\n",
`<stdin>: WARNING: Unterminated string token
<stdin>: WARNING: Expected "}" to go with "{"
<stdin>: NOTE: The unbalanced "{" is here:
<stdin>: WARNING: Unterminated string token
`)
expectParseError(t, "a:after { content: '\f' }", "a:after {\n content: '\n ' }\n ;\n}\n",
`<stdin>: WARNING: Unterminated string token
<stdin>: WARNING: Expected "}" to go with "{"
<stdin>: NOTE: The unbalanced "{" is here:
<stdin>: WARNING: Unterminated string token
`)
expectParseError(t, "a:after { content: '\r\n' }", "a:after {\n content: '\n ' }\n ;\n}\n",
`<stdin>: WARNING: Unterminated string token
<stdin>: WARNING: Expected "}" to go with "{"
<stdin>: NOTE: The unbalanced "{" is here:
<stdin>: WARNING: Unterminated string token
`)
expectPrinted(t, "a:after { content: '\\1010101' }", "a:after {\n content: \"\U001010101\";\n}\n")
expectPrinted(t, "a:after { content: '\\invalid' }", "a:after {\n content: \"invalid\";\n}\n")
}
func TestNumber(t *testing.T) {
for _, ext := range []string{"", "%", "px+"} {
expectPrinted(t, "a { width: .0"+ext+"; }", "a {\n width: .0"+ext+";\n}\n")
expectPrinted(t, "a { width: .00"+ext+"; }", "a {\n width: .00"+ext+";\n}\n")
expectPrinted(t, "a { width: .10"+ext+"; }", "a {\n width: .10"+ext+";\n}\n")
expectPrinted(t, "a { width: 0."+ext+"; }", "a {\n width: 0."+ext+";\n}\n")
expectPrinted(t, "a { width: 0.0"+ext+"; }", "a {\n width: 0.0"+ext+";\n}\n")
expectPrinted(t, "a { width: 0.1"+ext+"; }", "a {\n width: 0.1"+ext+";\n}\n")
expectPrinted(t, "a { width: +.0"+ext+"; }", "a {\n width: +.0"+ext+";\n}\n")
expectPrinted(t, "a { width: +.00"+ext+"; }", "a {\n width: +.00"+ext+";\n}\n")
expectPrinted(t, "a { width: +.10"+ext+"; }", "a {\n width: +.10"+ext+";\n}\n")
expectPrinted(t, "a { width: +0."+ext+"; }", "a {\n width: +0."+ext+";\n}\n")
expectPrinted(t, "a { width: +0.0"+ext+"; }", "a {\n width: +0.0"+ext+";\n}\n")
expectPrinted(t, "a { width: +0.1"+ext+"; }", "a {\n width: +0.1"+ext+";\n}\n")
expectPrinted(t, "a { width: -.0"+ext+"; }", "a {\n width: -.0"+ext+";\n}\n")
expectPrinted(t, "a { width: -.00"+ext+"; }", "a {\n width: -.00"+ext+";\n}\n")
expectPrinted(t, "a { width: -.10"+ext+"; }", "a {\n width: -.10"+ext+";\n}\n")
expectPrinted(t, "a { width: -0."+ext+"; }", "a {\n width: -0."+ext+";\n}\n")
expectPrinted(t, "a { width: -0.0"+ext+"; }", "a {\n width: -0.0"+ext+";\n}\n")
expectPrinted(t, "a { width: -0.1"+ext+"; }", "a {\n width: -0.1"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: .0"+ext+"; }", "a {\n width: 0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: .00"+ext+"; }", "a {\n width: 0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: .10"+ext+"; }", "a {\n width: .1"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: 0."+ext+"; }", "a {\n width: 0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: 0.0"+ext+"; }", "a {\n width: 0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: 0.1"+ext+"; }", "a {\n width: .1"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: +.0"+ext+"; }", "a {\n width: +0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: +.00"+ext+"; }", "a {\n width: +0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: +.10"+ext+"; }", "a {\n width: +.1"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: +0."+ext+"; }", "a {\n width: +0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: +0.0"+ext+"; }", "a {\n width: +0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: +0.1"+ext+"; }", "a {\n width: +.1"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: -.0"+ext+"; }", "a {\n width: -0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: -.00"+ext+"; }", "a {\n width: -0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: -.10"+ext+"; }", "a {\n width: -.1"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: -0."+ext+"; }", "a {\n width: -0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: -0.0"+ext+"; }", "a {\n width: -0"+ext+";\n}\n")
expectPrintedMangle(t, "a { width: -0.1"+ext+"; }", "a {\n width: -.1"+ext+";\n}\n")
}
}
func TestHexColor(t *testing.T) {
// "#RGBA"
expectPrinted(t, "a { color: #1234 }", "a {\n color: #1234;\n}\n")
expectPrinted(t, "a { color: #123f }", "a {\n color: #123f;\n}\n")
expectPrinted(t, "a { color: #abcd }", "a {\n color: #abcd;\n}\n")
expectPrinted(t, "a { color: #abcf }", "a {\n color: #abcf;\n}\n")
expectPrinted(t, "a { color: #ABCD }", "a {\n color: #ABCD;\n}\n")
expectPrinted(t, "a { color: #ABCF }", "a {\n color: #ABCF;\n}\n")
expectPrintedMangle(t, "a { color: #1234 }", "a {\n color: #1234;\n}\n")
expectPrintedMangle(t, "a { color: #123f }", "a {\n color: #123;\n}\n")
expectPrintedMangle(t, "a { color: #abcd }", "a {\n color: #abcd;\n}\n")
expectPrintedMangle(t, "a { color: #abcf }", "a {\n color: #abc;\n}\n")
expectPrintedMangle(t, "a { color: #ABCD }", "a {\n color: #abcd;\n}\n")
expectPrintedMangle(t, "a { color: #ABCF }", "a {\n color: #abc;\n}\n")
// "#RRGGBB"
expectPrinted(t, "a { color: #112233 }", "a {\n color: #112233;\n}\n")
expectPrinted(t, "a { color: #122233 }", "a {\n color: #122233;\n}\n")
expectPrinted(t, "a { color: #112333 }", "a {\n color: #112333;\n}\n")
expectPrinted(t, "a { color: #112234 }", "a {\n color: #112234;\n}\n")
expectPrintedMangle(t, "a { color: #112233 }", "a {\n color: #123;\n}\n")
expectPrintedMangle(t, "a { color: #122233 }", "a {\n color: #122233;\n}\n")
expectPrintedMangle(t, "a { color: #112333 }", "a {\n color: #112333;\n}\n")
expectPrintedMangle(t, "a { color: #112234 }", "a {\n color: #112234;\n}\n")
expectPrinted(t, "a { color: #aabbcc }", "a {\n color: #aabbcc;\n}\n")
expectPrinted(t, "a { color: #abbbcc }", "a {\n color: #abbbcc;\n}\n")
expectPrinted(t, "a { color: #aabccc }", "a {\n color: #aabccc;\n}\n")
expectPrinted(t, "a { color: #aabbcd }", "a {\n color: #aabbcd;\n}\n")
expectPrintedMangle(t, "a { color: #aabbcc }", "a {\n color: #abc;\n}\n")
expectPrintedMangle(t, "a { color: #abbbcc }", "a {\n color: #abbbcc;\n}\n")
expectPrintedMangle(t, "a { color: #aabccc }", "a {\n color: #aabccc;\n}\n")
expectPrintedMangle(t, "a { color: #aabbcd }", "a {\n color: #aabbcd;\n}\n")
expectPrinted(t, "a { color: #AABBCC }", "a {\n color: #AABBCC;\n}\n")
expectPrinted(t, "a { color: #ABBBCC }", "a {\n color: #ABBBCC;\n}\n")
expectPrinted(t, "a { color: #AABCCC }", "a {\n color: #AABCCC;\n}\n")
expectPrinted(t, "a { color: #AABBCD }", "a {\n color: #AABBCD;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCC }", "a {\n color: #abc;\n}\n")
expectPrintedMangle(t, "a { color: #ABBBCC }", "a {\n color: #abbbcc;\n}\n")
expectPrintedMangle(t, "a { color: #AABCCC }", "a {\n color: #aabccc;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCD }", "a {\n color: #aabbcd;\n}\n")
// "#RRGGBBAA"
expectPrinted(t, "a { color: #11223344 }", "a {\n color: #11223344;\n}\n")
expectPrinted(t, "a { color: #12223344 }", "a {\n color: #12223344;\n}\n")
expectPrinted(t, "a { color: #11233344 }", "a {\n color: #11233344;\n}\n")
expectPrinted(t, "a { color: #11223444 }", "a {\n color: #11223444;\n}\n")
expectPrinted(t, "a { color: #11223345 }", "a {\n color: #11223345;\n}\n")
expectPrintedMangle(t, "a { color: #11223344 }", "a {\n color: #1234;\n}\n")
expectPrintedMangle(t, "a { color: #12223344 }", "a {\n color: #12223344;\n}\n")
expectPrintedMangle(t, "a { color: #11233344 }", "a {\n color: #11233344;\n}\n")
expectPrintedMangle(t, "a { color: #11223444 }", "a {\n color: #11223444;\n}\n")
expectPrintedMangle(t, "a { color: #11223345 }", "a {\n color: #11223345;\n}\n")
expectPrinted(t, "a { color: #aabbccdd }", "a {\n color: #aabbccdd;\n}\n")
expectPrinted(t, "a { color: #abbbccdd }", "a {\n color: #abbbccdd;\n}\n")
expectPrinted(t, "a { color: #aabcccdd }", "a {\n color: #aabcccdd;\n}\n")
expectPrinted(t, "a { color: #aabbcddd }", "a {\n color: #aabbcddd;\n}\n")
expectPrinted(t, "a { color: #aabbccde }", "a {\n color: #aabbccde;\n}\n")
expectPrintedMangle(t, "a { color: #aabbccdd }", "a {\n color: #abcd;\n}\n")
expectPrintedMangle(t, "a { color: #abbbccdd }", "a {\n color: #abbbccdd;\n}\n")
expectPrintedMangle(t, "a { color: #aabcccdd }", "a {\n color: #aabcccdd;\n}\n")
expectPrintedMangle(t, "a { color: #aabbcddd }", "a {\n color: #aabbcddd;\n}\n")
expectPrintedMangle(t, "a { color: #aabbccde }", "a {\n color: #aabbccde;\n}\n")
expectPrinted(t, "a { color: #AABBCCDD }", "a {\n color: #AABBCCDD;\n}\n")
expectPrinted(t, "a { color: #ABBBCCDD }", "a {\n color: #ABBBCCDD;\n}\n")
expectPrinted(t, "a { color: #AABCCCDD }", "a {\n color: #AABCCCDD;\n}\n")
expectPrinted(t, "a { color: #AABBCDDD }", "a {\n color: #AABBCDDD;\n}\n")
expectPrinted(t, "a { color: #AABBCCDE }", "a {\n color: #AABBCCDE;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCCDD }", "a {\n color: #abcd;\n}\n")
expectPrintedMangle(t, "a { color: #ABBBCCDD }", "a {\n color: #abbbccdd;\n}\n")
expectPrintedMangle(t, "a { color: #AABCCCDD }", "a {\n color: #aabcccdd;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCDDD }", "a {\n color: #aabbcddd;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCCDE }", "a {\n color: #aabbccde;\n}\n")
// "#RRGGBBFF"
expectPrinted(t, "a { color: #112233ff }", "a {\n color: #112233ff;\n}\n")
expectPrinted(t, "a { color: #122233ff }", "a {\n color: #122233ff;\n}\n")
expectPrinted(t, "a { color: #112333ff }", "a {\n color: #112333ff;\n}\n")
expectPrinted(t, "a { color: #112234ff }", "a {\n color: #112234ff;\n}\n")
expectPrinted(t, "a { color: #112233ef }", "a {\n color: #112233ef;\n}\n")
expectPrintedMangle(t, "a { color: #112233ff }", "a {\n color: #123;\n}\n")
expectPrintedMangle(t, "a { color: #122233ff }", "a {\n color: #122233;\n}\n")
expectPrintedMangle(t, "a { color: #112333ff }", "a {\n color: #112333;\n}\n")
expectPrintedMangle(t, "a { color: #112234ff }", "a {\n color: #112234;\n}\n")
expectPrintedMangle(t, "a { color: #112233ef }", "a {\n color: #112233ef;\n}\n")
expectPrinted(t, "a { color: #aabbccff }", "a {\n color: #aabbccff;\n}\n")
expectPrinted(t, "a { color: #abbbccff }", "a {\n color: #abbbccff;\n}\n")
expectPrinted(t, "a { color: #aabcccff }", "a {\n color: #aabcccff;\n}\n")
expectPrinted(t, "a { color: #aabbcdff }", "a {\n color: #aabbcdff;\n}\n")
expectPrinted(t, "a { color: #aabbccef }", "a {\n color: #aabbccef;\n}\n")
expectPrintedMangle(t, "a { color: #aabbccff }", "a {\n color: #abc;\n}\n")
expectPrintedMangle(t, "a { color: #abbbccff }", "a {\n color: #abbbcc;\n}\n")
expectPrintedMangle(t, "a { color: #aabcccff }", "a {\n color: #aabccc;\n}\n")
expectPrintedMangle(t, "a { color: #aabbcdff }", "a {\n color: #aabbcd;\n}\n")
expectPrintedMangle(t, "a { color: #aabbccef }", "a {\n color: #aabbccef;\n}\n")
expectPrinted(t, "a { color: #AABBCCFF }", "a {\n color: #AABBCCFF;\n}\n")
expectPrinted(t, "a { color: #ABBBCCFF }", "a {\n color: #ABBBCCFF;\n}\n")
expectPrinted(t, "a { color: #AABCCCFF }", "a {\n color: #AABCCCFF;\n}\n")
expectPrinted(t, "a { color: #AABBCDFF }", "a {\n color: #AABBCDFF;\n}\n")
expectPrinted(t, "a { color: #AABBCCEF }", "a {\n color: #AABBCCEF;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCCFF }", "a {\n color: #abc;\n}\n")
expectPrintedMangle(t, "a { color: #ABBBCCFF }", "a {\n color: #abbbcc;\n}\n")
expectPrintedMangle(t, "a { color: #AABCCCFF }", "a {\n color: #aabccc;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCDFF }", "a {\n color: #aabbcd;\n}\n")
expectPrintedMangle(t, "a { color: #AABBCCEF }", "a {\n color: #aabbccef;\n}\n")
}
func TestColorNames(t *testing.T) {
expectPrinted(t, "a { color: #f00 }", "a {\n color: #f00;\n}\n")
expectPrinted(t, "a { color: #f00f }", "a {\n color: #f00f;\n}\n")
expectPrinted(t, "a { color: #ff0000 }", "a {\n color: #ff0000;\n}\n")
expectPrinted(t, "a { color: #ff0000ff }", "a {\n color: #ff0000ff;\n}\n")
expectPrintedMangle(t, "a { color: #f00 }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "a { color: #f00e }", "a {\n color: #f00e;\n}\n")
expectPrintedMangle(t, "a { color: #f00f }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "a { color: #ff0000 }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "a { color: #ff0000ef }", "a {\n color: #ff0000ef;\n}\n")
expectPrintedMangle(t, "a { color: #ff0000ff }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "a { color: #ffc0cb }", "a {\n color: pink;\n}\n")
expectPrintedMangle(t, "a { color: #ffc0cbef }", "a {\n color: #ffc0cbef;\n}\n")
expectPrintedMangle(t, "a { color: #ffc0cbff }", "a {\n color: pink;\n}\n")
expectPrinted(t, "a { color: white }", "a {\n color: white;\n}\n")
expectPrinted(t, "a { color: tUrQuOiSe }", "a {\n color: tUrQuOiSe;\n}\n")
expectPrintedMangle(t, "a { color: white }", "a {\n color: #fff;\n}\n")
expectPrintedMangle(t, "a { color: tUrQuOiSe }", "a {\n color: #40e0d0;\n}\n")
}
func TestColorRGBA(t *testing.T) {
expectPrintedMangle(t, "a { color: rgba(1 2 3 / 0.5) }", "a {\n color: #01020380;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1 2 3 / 50%) }", "a {\n color: #0102037f;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1, 2, 3, 0.5) }", "a {\n color: #01020380;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1, 2, 3, 50%) }", "a {\n color: #0102037f;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1% 2% 3% / 0.5) }", "a {\n color: #03050880;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1% 2% 3% / 50%) }", "a {\n color: #0305087f;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1%, 2%, 3%, 0.5) }", "a {\n color: #03050880;\n}\n")
expectPrintedMangle(t, "a { color: rgba(1%, 2%, 3%, 50%) }", "a {\n color: #0305087f;\n}\n")
expectPrintedLowerMangle(t, "a { color: rgb(1, 2, 3, 0.4) }", "a {\n color: rgba(1, 2, 3, .4);\n}\n")
expectPrintedLowerMangle(t, "a { color: rgba(1, 2, 3, 40%) }", "a {\n color: rgba(1, 2, 3, .4);\n}\n")
expectPrintedLowerMangle(t, "a { color: rgb(var(--x) var(--y) var(--z)) }", "a {\n color: rgb(var(--x) var(--y) var(--z));\n}\n")
}
func TestColorHSLA(t *testing.T) {
expectPrintedMangle(t, ".red { color: hsl(0, 100%, 50%) }", ".red {\n color: red;\n}\n")
expectPrintedMangle(t, ".orange { color: hsl(30deg, 100%, 50%) }", ".orange {\n color: #ff8000;\n}\n")
expectPrintedMangle(t, ".yellow { color: hsl(60 100% 50%) }", ".yellow {\n color: #ff0;\n}\n")
expectPrintedMangle(t, ".green { color: hsl(120, 100%, 50%) }", ".green {\n color: #0f0;\n}\n")
expectPrintedMangle(t, ".cyan { color: hsl(200grad, 100%, 50%) }", ".cyan {\n color: #0ff;\n}\n")
expectPrintedMangle(t, ".blue { color: hsl(240, 100%, 50%) }", ".blue {\n color: #00f;\n}\n")
expectPrintedMangle(t, ".purple { color: hsl(0.75turn 100% 50%) }", ".purple {\n color: #7f00ff;\n}\n")
expectPrintedMangle(t, ".magenta { color: hsl(300, 100%, 50%) }", ".magenta {\n color: #f0f;\n}\n")
expectPrintedMangle(t, "a { color: hsl(30 25% 50% / 50%) }", "a {\n color: #9f80607f;\n}\n")
expectPrintedMangle(t, "a { color: hsla(30 25% 50% / 50%) }", "a {\n color: #9f80607f;\n}\n")
expectPrintedLowerMangle(t, "a { color: hsl(1, 2%, 3%, 0.4) }", "a {\n color: rgba(8, 8, 7, .4);\n}\n")
expectPrintedLowerMangle(t, "a { color: hsla(1, 2%, 3%, 40%) }", "a {\n color: rgba(8, 8, 7, .4);\n}\n")
expectPrintedLowerMangle(t, "a { color: hsl(var(--x) var(--y) var(--z)) }", "a {\n color: hsl(var(--x) var(--y) var(--z));\n}\n")
}
func TestLowerColor(t *testing.T) {
expectPrintedLower(t, "a { color: rebeccapurple }", "a {\n color: #663399;\n}\n")
expectPrintedLower(t, "a { color: #0123 }", "a {\n color: rgba(0, 17, 34, 0.2);\n}\n")
expectPrintedLower(t, "a { color: #1230 }", "a {\n color: rgba(17, 34, 51, 0);\n}\n")
expectPrintedLower(t, "a { color: #1234 }", "a {\n color: rgba(17, 34, 51, 0.267);\n}\n")
expectPrintedLower(t, "a { color: #123f }", "a {\n color: rgba(17, 34, 51, 1);\n}\n")
expectPrintedLower(t, "a { color: #12345678 }", "a {\n color: rgba(18, 52, 86, 0.471);\n}\n")
expectPrintedLower(t, "a { color: #ff00007f }", "a {\n color: rgba(255, 0, 0, 0.498);\n}\n")
expectPrintedLower(t, "a { color: rgb(1 2 3) }", "a {\n color: rgb(1, 2, 3);\n}\n")
expectPrintedLower(t, "a { color: hsl(1 2% 3%) }", "a {\n color: hsl(1, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: rgba(1% 2% 3%) }", "a {\n color: rgb(1%, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: hsla(1deg 2% 3%) }", "a {\n color: hsl(1, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: hsla(200grad 2% 3%) }", "a {\n color: hsl(180, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: hsla(6.28319rad 2% 3%) }", "a {\n color: hsl(360, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: hsla(0.5turn 2% 3%) }", "a {\n color: hsl(180, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: hsla(+200grad 2% 3%) }", "a {\n color: hsl(180, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: hsla(-200grad 2% 3%) }", "a {\n color: hsl(-180, 2%, 3%);\n}\n")
expectPrintedLower(t, "a { color: rgb(1 2 3 / 4) }", "a {\n color: rgba(1, 2, 3, 4);\n}\n")
expectPrintedLower(t, "a { color: rgba(1% 2% 3% / 4%) }", "a {\n color: rgba(1%, 2%, 3%, 0.04);\n}\n")
expectPrintedLower(t, "a { color: hsl(1 2% 3% / 4) }", "a {\n color: hsla(1, 2%, 3%, 4);\n}\n")
expectPrintedLower(t, "a { color: hsla(1 2% 3% / 4%) }", "a {\n color: hsla(1, 2%, 3%, 0.04);\n}\n")
expectPrintedLower(t, "a { color: rgb(1, 2, 3, 4) }", "a {\n color: rgba(1, 2, 3, 4);\n}\n")
expectPrintedLower(t, "a { color: rgba(1%, 2%, 3%, 4%) }", "a {\n color: rgba(1%, 2%, 3%, 0.04);\n}\n")
expectPrintedLower(t, "a { color: rgb(1%, 2%, 3%, 0.4%) }", "a {\n color: rgba(1%, 2%, 3%, 0.004);\n}\n")
expectPrintedLower(t, "a { color: hsl(1, 2%, 3%, 4) }", "a {\n color: hsla(1, 2%, 3%, 4);\n}\n")
expectPrintedLower(t, "a { color: hsla(1deg, 2%, 3%, 4%) }", "a {\n color: hsla(1, 2%, 3%, 0.04);\n}\n")
expectPrintedLower(t, "a { color: hsl(1deg, 2%, 3%, 0.4%) }", "a {\n color: hsla(1, 2%, 3%, 0.004);\n}\n")
}
func TestDeclaration(t *testing.T) {
expectPrinted(t, ".decl {}", ".decl {\n}\n")
expectPrinted(t, ".decl { a: b }", ".decl {\n a: b;\n}\n")
expectPrinted(t, ".decl { a: b; }", ".decl {\n a: b;\n}\n")
expectPrinted(t, ".decl { a: b; c: d }", ".decl {\n a: b;\n c: d;\n}\n")
expectPrinted(t, ".decl { a: b; c: d; }", ".decl {\n a: b;\n c: d;\n}\n")
expectParseError(t, ".decl { a { b: c; } }", ".decl {\n a { b: c; };\n}\n",
"<stdin>: WARNING: A nested style rule cannot start with \"a\" because it looks like the start of a declaration\n"+
"NOTE: To start a nested style rule with an identifier, you need to wrap the identifier in \":is(...)\" to prevent the rule from being parsed as a declaration.\n")
expectPrinted(t, ".decl { & a { b: c; } }", ".decl {\n & a {\n b: c;\n }\n}\n")
// See http://browserhacks.com/
expectPrinted(t, ".selector { (;property: value;); }", ".selector {\n (;property: value;);\n}\n")
expectPrinted(t, ".selector { [;property: value;]; }", ".selector {\n [;property: value;]; {\n }\n}\n") // Note: This now overlaps with CSS nesting syntax
expectPrinted(t, ".selector, {}", ".selector, {\n}\n")
expectPrinted(t, ".selector\\ {}", ".selector\\ {\n}\n")
expectPrinted(t, ".selector { property: value\\9; }", ".selector {\n property: value\\\t;\n}\n")
expectPrinted(t, "@media \\0screen\\,screen\\9 {}", "@media \uFFFDscreen\\,screen\\\t {\n}\n")
}
func TestSelector(t *testing.T) {
expectPrinted(t, "a{}", "a {\n}\n")
expectPrinted(t, "a {}", "a {\n}\n")
expectPrinted(t, "a b {}", "a b {\n}\n")
expectPrinted(t, "a/**/b {}", "a b {\n}\n")
expectPrinted(t, "a/**/.b {}", "a.b {\n}\n")
expectPrinted(t, "a/**/:b {}", "a:b {\n}\n")
expectPrinted(t, "a/**/[b] {}", "a[b] {\n}\n")
expectPrinted(t, "a>/**/b {}", "a > b {\n}\n")
expectPrinted(t, "a+/**/b {}", "a + b {\n}\n")
expectPrinted(t, "a~/**/b {}", "a ~ b {\n}\n")
expectPrinted(t, "[b]{}", "[b] {\n}\n")
expectPrinted(t, "[b] {}", "[b] {\n}\n")
expectPrinted(t, "a[b] {}", "a[b] {\n}\n")
expectPrinted(t, "a [b] {}", "a [b] {\n}\n")
expectParseError(t, "[] {}", "[] {\n}\n", "<stdin>: WARNING: Expected identifier but found \"]\"\n")
expectParseError(t, "[b {}", "[b] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n")
expectParseError(t, "[b]] {}", "[b]] {\n}\n", "<stdin>: WARNING: Unexpected \"]\"\n")
expectParseError(t, "a[b {}", "a[b] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n")
expectParseError(t, "a[b]] {}", "a[b]] {\n}\n", "<stdin>: WARNING: Unexpected \"]\"\n")
expectPrinted(t, "[|b]{}", "[b] {\n}\n") // "[|b]" is equivalent to "[b]"
expectPrinted(t, "[*|b]{}", "[*|b] {\n}\n")
expectPrinted(t, "[a|b]{}", "[a|b] {\n}\n")
expectPrinted(t, "[a|b|=\"c\"]{}", "[a|b|=c] {\n}\n")
expectPrinted(t, "[a|b |= \"c\"]{}", "[a|b|=c] {\n}\n")
expectParseError(t, "[a||b] {}", "[a||b] {\n}\n", "<stdin>: WARNING: Expected identifier but found \"|\"\n")
expectParseError(t, "[* | b] {}", "[* | b] {\n}\n", "<stdin>: WARNING: Expected \"|\" but found whitespace\n")
expectParseError(t, "[a | b] {}", "[a|=b] {\n}\n", "<stdin>: WARNING: Expected \"=\" but found whitespace\n")
expectPrinted(t, "[b=\"c\"] {}", "[b=c] {\n}\n")
expectPrinted(t, "[b=\"c d\"] {}", "[b=\"c d\"] {\n}\n")
expectPrinted(t, "[b=\"0c\"] {}", "[b=\"0c\"] {\n}\n")
expectPrinted(t, "[b~=\"c\"] {}", "[b~=c] {\n}\n")
expectPrinted(t, "[b^=\"c\"] {}", "[b^=c] {\n}\n")
expectPrinted(t, "[b$=\"c\"] {}", "[b$=c] {\n}\n")
expectPrinted(t, "[b*=\"c\"] {}", "[b*=c] {\n}\n")
expectPrinted(t, "[b|=\"c\"] {}", "[b|=c] {\n}\n")
expectParseError(t, "[b?=\"c\"] {}", "[b?=\"c\"] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n")
expectPrinted(t, "[b = \"c\"] {}", "[b=c] {\n}\n")
expectPrinted(t, "[b ~= \"c\"] {}", "[b~=c] {\n}\n")
expectPrinted(t, "[b ^= \"c\"] {}", "[b^=c] {\n}\n")
expectPrinted(t, "[b $= \"c\"] {}", "[b$=c] {\n}\n")
expectPrinted(t, "[b *= \"c\"] {}", "[b*=c] {\n}\n")
expectPrinted(t, "[b |= \"c\"] {}", "[b|=c] {\n}\n")
expectParseError(t, "[b ?= \"c\"] {}", "[b ?= \"c\"] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n")
expectPrinted(t, "[b = \"c\" i] {}", "[b=c i] {\n}\n")
expectPrinted(t, "[b = \"c\" I] {}", "[b=c I] {\n}\n")
expectPrinted(t, "[b = \"c\" s] {}", "[b=c s] {\n}\n")
expectPrinted(t, "[b = \"c\" S] {}", "[b=c S] {\n}\n")
expectParseError(t, "[b i] {}", "[b i] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n<stdin>: WARNING: Unexpected \"]\"\n")
expectParseError(t, "[b I] {}", "[b I] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n<stdin>: WARNING: Unexpected \"]\"\n")
expectParseError(t, "[b s] {}", "[b s] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n<stdin>: WARNING: Unexpected \"]\"\n")
expectParseError(t, "[b S] {}", "[b S] {\n}\n", "<stdin>: WARNING: Expected \"]\" to go with \"[\"\n<stdin>: NOTE: The unbalanced \"[\" is here:\n<stdin>: WARNING: Unexpected \"]\"\n")
expectPrinted(t, "|b {}", "|b {\n}\n")
expectPrinted(t, "|* {}", "|* {\n}\n")
expectPrinted(t, "a|b {}", "a|b {\n}\n")
expectPrinted(t, "a|* {}", "a|* {\n}\n")
expectPrinted(t, "*|b {}", "*|b {\n}\n")
expectPrinted(t, "*|* {}", "*|* {\n}\n")
expectParseError(t, "a||b {}", "a||b {\n}\n", "<stdin>: WARNING: Expected identifier but found \"|\"\n")
expectPrinted(t, "a+b {}", "a + b {\n}\n")
expectPrinted(t, "a>b {}", "a > b {\n}\n")
expectPrinted(t, "a+b {}", "a + b {\n}\n")
expectPrinted(t, "a~b {}", "a ~ b {\n}\n")
expectPrinted(t, "a + b {}", "a + b {\n}\n")
expectPrinted(t, "a > b {}", "a > b {\n}\n")
expectPrinted(t, "a + b {}", "a + b {\n}\n")
expectPrinted(t, "a ~ b {}", "a ~ b {\n}\n")
expectPrinted(t, "::b {}", "::b {\n}\n")
expectPrinted(t, "*::b {}", "*::b {\n}\n")
expectPrinted(t, "a::b {}", "a::b {\n}\n")
expectPrinted(t, "::b(c) {}", "::b(c) {\n}\n")
expectPrinted(t, "*::b(c) {}", "*::b(c) {\n}\n")
expectPrinted(t, "a::b(c) {}", "a::b(c) {\n}\n")
expectPrinted(t, "a:b:c {}", "a:b:c {\n}\n")
expectPrinted(t, "a:b(:c) {}", "a:b(:c) {\n}\n")
expectPrinted(t, "a: b {}", "a: b {\n}\n")
// These test cases previously caused a hang (see https://github.com/evanw/esbuild/issues/2276)
expectParseError(t, ":x(", ":x() {\n}\n", "<stdin>: WARNING: Unexpected end of file\n")
expectParseError(t, ":x( {}", ":x({}) {\n}\n", "<stdin>: WARNING: Expected \")\" to go with \"(\"\n<stdin>: NOTE: The unbalanced \"(\" is here:\n")
expectParseError(t, ":x(, :y() {}", ":x(, :y() {}) {\n}\n", "<stdin>: WARNING: Expected \")\" to go with \"(\"\n<stdin>: NOTE: The unbalanced \"(\" is here:\n")
expectPrinted(t, "#id {}", "#id {\n}\n")
expectPrinted(t, "#--0 {}", "#--0 {\n}\n")
expectPrinted(t, "#\\-0 {}", "#\\-0 {\n}\n")
expectPrinted(t, "#\\30 {}", "#\\30 {\n}\n")
expectPrinted(t, "div#id {}", "div#id {\n}\n")
expectPrinted(t, "div#--0 {}", "div#--0 {\n}\n")
expectPrinted(t, "div#\\-0 {}", "div#\\-0 {\n}\n")
expectPrinted(t, "div#\\30 {}", "div#\\30 {\n}\n")
expectParseError(t, "#0 {}", "#0 {\n}\n", "<stdin>: WARNING: Unexpected \"#0\"\n")
expectParseError(t, "#-0 {}", "#-0 {\n}\n", "<stdin>: WARNING: Unexpected \"#-0\"\n")
expectParseError(t, "div#0 {}", "div#0 {\n}\n", "<stdin>: WARNING: Unexpected \"#0\"\n")
expectParseError(t, "div#-0 {}", "div#-0 {\n}\n", "<stdin>: WARNING: Unexpected \"#-0\"\n")
expectPrinted(t, "div::before::after::selection::first-line::first-letter {color:red}",
"div::before::after::selection::first-line::first-letter {\n color: red;\n}\n")
expectPrintedMangle(t, "div::before::after::selection::first-line::first-letter {color:red}",
"div:before:after::selection:first-line:first-letter {\n color: red;\n}\n")
// Make sure '-' and '\\' consume an ident-like token instead of a name
expectParseError(t, "_:-ms-lang(x) {}", "_:-ms-lang(x) {\n}\n", "")
expectParseError(t, "_:\\ms-lang(x) {}", "_:ms-lang(x) {\n}\n", "")
}
func TestNestedSelector(t *testing.T) {
expectPrinted(t, "& {}", "& {\n}\n")
expectPrinted(t, "& b {}", "& b {\n}\n")
expectPrinted(t, "&:b {}", "&:b {\n}\n")
expectPrinted(t, "&* {}", "&* {\n}\n")
expectPrinted(t, "&|b {}", "&|b {\n}\n")
expectPrinted(t, "&*|b {}", "&*|b {\n}\n")
expectPrinted(t, "&a|b {}", "&a|b {\n}\n")
expectPrinted(t, "&[a] {}", "&[a] {\n}\n")
expectPrinted(t, "a { & {} }", "a {\n & {\n }\n}\n")
expectPrinted(t, "a { & b {} }", "a {\n & b {\n }\n}\n")
expectPrinted(t, "a { &:b {} }", "a {\n &:b {\n }\n}\n")
expectPrinted(t, "a { &* {} }", "a {\n &* {\n }\n}\n")
expectPrinted(t, "a { &|b {} }", "a {\n &|b {\n }\n}\n")
expectPrinted(t, "a { &*|b {} }", "a {\n &*|b {\n }\n}\n")
expectPrinted(t, "a { &a|b {} }", "a {\n &a|b {\n }\n}\n")
expectPrinted(t, "a { &[b] {} }", "a {\n &[b] {\n }\n}\n")
expectPrinted(t, "a { && {} }", "a {\n & {\n }\n}\n")
expectPrinted(t, "a { & + & {} }", "a {\n & + & {\n }\n}\n")
expectPrinted(t, "a { & > & {} }", "a {\n & > & {\n }\n}\n")
expectPrinted(t, "a { & ~ & {} }", "a {\n & ~ & {\n }\n}\n")
expectPrinted(t, "a { & + c& {} }", "a {\n & + &c {\n }\n}\n")
expectPrinted(t, "a { .b& + & {} }", "a {\n &.b + & {\n }\n}\n")
expectPrinted(t, "a { .b& + c& {} }", "a {\n &.b + &c {\n }\n}\n")
expectPrinted(t, "a { & + & > & ~ & {} }", "a {\n & + & > & ~ & {\n }\n}\n")
// CSS nesting works for all tokens except identifiers and functions
expectParseError(t, "a { .b {} }", "a {\n .b {\n }\n}\n", "")
expectParseError(t, "a { #b {} }", "a {\n #b {\n }\n}\n", "")
expectParseError(t, "a { :b {} }", "a {\n :b {\n }\n}\n", "")
expectParseError(t, "a { [b] {} }", "a {\n [b] {\n }\n}\n", "")
expectParseError(t, "a { * {} }", "a {\n * {\n }\n}\n", "")
expectParseError(t, "a { |b {} }", "a {\n |b {\n }\n}\n", "")
expectParseError(t, "a { >b {} }", "a {\n > b {\n }\n}\n", "")
expectParseError(t, "a { +b {} }", "a {\n + b {\n }\n}\n", "")
expectParseError(t, "a { ~b {} }", "a {\n ~ b {\n }\n}\n", "")
expectParseError(t, "a { b {} }", "a {\n b {};\n}\n",
"<stdin>: WARNING: A nested style rule cannot start with \"b\" because it looks like the start of a declaration\n"+
"NOTE: To start a nested style rule with an identifier, you need to wrap the identifier in \":is(...)\" to prevent the rule from being parsed as a declaration.\n")
expectParseError(t, "a { b() {} }", "a {\n b() {};\n}\n", "<stdin>: WARNING: Expected identifier but found \"b(\"\n")
// Note: CSS nesting no longer requires each complex selector to contain "&"
expectParseError(t, "a { & b, c {} }", "a {\n & b,\n c {\n }\n}\n", "")
expectParseError(t, "a { & b, & c {} }", "a {\n & b,\n & c {\n }\n}\n", "")
// Note: CSS nesting no longer requires the rule to be nested inside a parent
// (instead un-nested CSS nesting refers to ":scope" or to ":root")
expectParseError(t, "& b, c {}", "& b,\nc {\n}\n", "")
expectParseError(t, "& b, & c {}", "& b,\n& c {\n}\n", "")
expectParseError(t, "b & {}", "b & {\n}\n", "")
expectParseError(t, "b &, c {}", "b &,\nc {\n}\n", "")
expectPrinted(t, "a { .b & { color: red } }", "a {\n .b & {\n color: red;\n }\n}\n")
expectPrinted(t, "a { .b& { color: red } }", "a {\n &.b {\n color: red;\n }\n}\n")
expectPrinted(t, "a { .b&[c] { color: red } }", "a {\n &.b[c] {\n color: red;\n }\n}\n")
expectPrinted(t, "a { &[c] { color: red } }", "a {\n &[c] {\n color: red;\n }\n}\n")
expectPrinted(t, "a { [c]& { color: red } }", "a {\n &[c] {\n color: red;\n }\n}\n")
expectPrintedMinify(t, "a { .b & { color: red } }", "a{.b &{color:red}}")
expectPrintedMinify(t, "a { .b& { color: red } }", "a{&.b{color:red}}")
// Nested at-rules
expectPrinted(t, "a { @media screen { color: red } }", "a {\n @media screen {\n color: red;\n }\n}\n")
expectPrinted(t, "a { @media screen { .b { color: green } color: red } }",
"a {\n @media screen {\n .b {\n color: green;\n }\n color: red;\n }\n}\n")
expectPrinted(t, "a { @media screen { color: red; .b { color: green } } }",
"a {\n @media screen {\n color: red;\n .b {\n color: green;\n }\n }\n}\n")
expectPrinted(t, "html { @layer base { block-size: 100%; @layer support { & body { min-block-size: 100%; } } } }",
"html {\n @layer base {\n block-size: 100%;\n @layer support {\n & body {\n min-block-size: 100%;\n }\n }\n }\n}\n")
expectPrinted(t, ".card { aspect-ratio: 3/4; @scope (&) { :scope { border: 1px solid white } } }",
".card {\n aspect-ratio: 3/4;\n @scope (&) {\n :scope {\n border: 1px solid white;\n }\n }\n}\n")
// Minify an implicit leading "&"
expectPrintedMangle(t, "& { color: red }", "& {\n color: red;\n}\n")
expectPrintedMangle(t, "& a { color: red }", "a {\n color: red;\n}\n")
expectPrintedMangle(t, "& a, & b { color: red }", "a,\nb {\n color: red;\n}\n")
expectPrintedMangle(t, "& a, b { color: red }", "a,\nb {\n color: red;\n}\n")
expectPrintedMangle(t, "a, & b { color: red }", "a,\nb {\n color: red;\n}\n")
expectPrintedMangle(t, "& &a { color: red }", "& &a {\n color: red;\n}\n")
expectPrintedMangle(t, "& .x { color: red }", ".x {\n color: red;\n}\n")
expectPrintedMangle(t, "& &.x { color: red }", "& &.x {\n color: red;\n}\n")
expectPrintedMangle(t, "& + a { color: red }", "+ a {\n color: red;\n}\n")
expectPrintedMangle(t, "& + &a { color: red }", "+ &a {\n color: red;\n}\n")
expectPrintedMangle(t, "&.x { color: red }", "&.x {\n color: red;\n}\n")
expectPrintedMangle(t, "a & { color: red }", "a & {\n color: red;\n}\n")
expectPrintedMangle(t, ".x & { color: red }", ".x & {\n color: red;\n}\n")
expectPrintedMangle(t, "div { & a { color: red } }", "div {\n & a {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & .x { color: red } }", "div {\n .x {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & .x, & a { color: red } }", "div {\n .x,\n a {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { .x, & a { color: red } }", "div {\n .x,\n a {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & &a { color: red } }", "div {\n & &a {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & .x { color: red } }", "div {\n .x {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & &.x { color: red } }", "div {\n & &.x {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & + a { color: red } }", "div {\n + a {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { & + &a { color: red } }", "div {\n + &a {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div { .x & { color: red } }", "div {\n .x & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "@media screen { & div { color: red } }", "@media screen {\n div {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "a { @media screen { & div { color: red } } }", "a {\n @media screen {\n & div {\n color: red;\n }\n }\n}\n")
// Reorder selectors to enable removing "&"
expectPrintedMangle(t, "reorder { & first, .second { color: red } }", "reorder {\n .second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, & .second { color: red } }", "reorder {\n .second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, #second { color: red } }", "reorder {\n #second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, [second] { color: red } }", "reorder {\n [second],\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, :second { color: red } }", "reorder {\n :second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, + second { color: red } }", "reorder {\n + second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, ~ second { color: red } }", "reorder {\n ~ second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, > second { color: red } }", "reorder {\n > second,\n first {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "reorder { & first, second, .third { color: red } }", "reorder {\n .third,\n second,\n first {\n color: red;\n }\n}\n")
// Inline no-op nesting
expectPrintedMangle(t, "div { & { color: red } }", "div {\n color: red;\n}\n")
expectPrintedMangle(t, "div { && { color: red } }", "div {\n color: red;\n}\n")
expectPrintedMangle(t, "div { zoom: 2; & { color: red } }", "div {\n zoom: 2;\n color: red;\n}\n")
expectPrintedMangle(t, "div { zoom: 2; && { color: red } }", "div {\n zoom: 2;\n color: red;\n}\n")
expectPrintedMangle(t, "div { &, && { color: red } zoom: 2 }", "div {\n zoom: 2;\n color: red;\n}\n")
expectPrintedMangle(t, "div { &&, & { color: red } zoom: 2 }", "div {\n zoom: 2;\n color: red;\n}\n")
expectPrintedMangle(t, "div { a: 1; & { b: 4 } b: 2; && { c: 5 } c: 3 }", "div {\n a: 1;\n b: 2;\n c: 3;\n b: 4;\n c: 5;\n}\n")
expectPrintedMangle(t, "div { .b { x: 1 } & { x: 2 } }", "div {\n .b {\n x: 1;\n }\n x: 2;\n}\n")
expectPrintedMangle(t, "div { & { & { & { color: red } } & { & { zoom: 2 } } } }", "div {\n color: red;\n zoom: 2;\n}\n")
// Cannot inline no-op nesting with pseudo-elements (https://github.com/w3c/csswg-drafts/issues/7433)
expectPrintedMangle(t, "div, span:hover { & { color: red } }", "div,\nspan:hover {\n color: red;\n}\n")
expectPrintedMangle(t, "div, span::before { & { color: red } }", "div,\nspan:before {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span:before { & { color: red } }", "div,\nspan:before {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span::after { & { color: red } }", "div,\nspan:after {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span:after { & { color: red } }", "div,\nspan:after {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span::first-line { & { color: red } }", "div,\nspan:first-line {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span:first-line { & { color: red } }", "div,\nspan:first-line {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span::first-letter { & { color: red } }", "div,\nspan:first-letter {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span:first-letter { & { color: red } }", "div,\nspan:first-letter {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span::pseudo { & { color: red } }", "div,\nspan::pseudo {\n & {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span:hover { @layer foo { & { color: red } } }", "div,\nspan:hover {\n @layer foo {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span:hover { @media screen { & { color: red } } }", "div,\nspan:hover {\n @media screen {\n color: red;\n }\n}\n")
expectPrintedMangle(t, "div, span::pseudo { @layer foo { & { color: red } } }", "div,\nspan::pseudo {\n @layer foo {\n & {\n color: red;\n }\n }\n}\n")
expectPrintedMangle(t, "div, span::pseudo { @media screen { & { color: red } } }", "div,\nspan::pseudo {\n @media screen {\n & {\n color: red;\n }\n }\n}\n")
// Lowering tests for nesting
expectPrintedLower(t, ".foo { .bar { color: red } }", ".foo .bar {\n color: red;\n}\n")
expectPrintedLower(t, ".foo { &.bar { color: red } }", ".foo.bar {\n color: red;\n}\n")
expectPrintedLower(t, ".foo { & .bar { color: red } }", ".foo .bar {\n color: red;\n}\n")
expectPrintedLower(t, ".foo .bar { .baz { color: red } }", ".foo .bar .baz {\n color: red;\n}\n")
expectPrintedLower(t, ".foo .bar { &.baz { color: red } }", ".foo .bar.baz {\n color: red;\n}\n")
expectPrintedLower(t, ".foo .bar { & .baz { color: red } }", ".foo .bar .baz {\n color: red;\n}\n")
expectPrintedLower(t, ".foo .bar { & > .baz { color: red } }", ".foo .bar > .baz {\n color: red;\n}\n")
expectPrintedLower(t, ".foo .bar { .baz & { color: red } }", ".baz :is(.foo .bar) {\n color: red;\n}\n") // NOT the same as ".baz .foo .bar"
expectPrintedLower(t, ".foo .bar { & .baz & { color: red } }", ".foo .bar .baz :is(.foo .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".foo, .bar { .baz & { color: red } }", ".baz :is(.foo, .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".foo, [bar~='abc'] { .baz { color: red } }", ":is(.foo, [bar~=abc]) .baz {\n color: red;\n}\n")
expectPrintedLower(t, ".foo, [bar~='a b c'] { .baz { color: red } }", ":is(.foo, [bar~=\"a b c\"]) .baz {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { .foo, .bar { color: red } }", ".baz :is(.foo, .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { .foo, & .bar { color: red } }", ".baz :is(.foo, .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { & .foo, .bar { color: red } }", ".baz :is(.foo, .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { & .foo, & .bar { color: red } }", ".baz :is(.foo, .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { .foo, &.bar { color: red } }", ".baz .foo,\n.baz.bar {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { &.foo, .bar { color: red } }", ".baz.foo,\n.baz .bar {\n color: red;\n}\n")
expectPrintedLower(t, ".baz { &.foo, &.bar { color: red } }", ".baz:is(.foo, .bar) {\n color: red;\n}\n")
expectPrintedLower(t, ".foo { color: blue; & .bar { color: red } }", ".foo {\n color: blue;\n}\n.foo .bar {\n color: red;\n}\n")
expectPrintedLower(t, ".foo { & .bar { color: red } color: blue }", ".foo {\n color: blue;\n}\n.foo .bar {\n color: red;\n}\n")
expectPrintedLower(t, ".foo { color: blue; & .bar { color: red } zoom: 2 }", ".foo {\n color: blue;\n zoom: 2;\n}\n.foo .bar {\n color: red;\n}\n")
expectPrintedLower(t, ".a, .b { .c, .d { color: red } }", ":is(.a, .b) :is(.c, .d) {\n color: red;\n}\n")
expectPrintedLower(t, ".a { color: red; > .b { color: green; > .c { color: blue } } }", ".a {\n color: red;\n}\n.a > .b {\n color: green;\n}\n.a > .b > .c {\n color: blue;\n}\n")
expectPrintedLower(t, "> .a { color: red; > .b { color: green; > .c { color: blue } } }", "> .a {\n color: red;\n}\n> .a > .b {\n color: green;\n}\n> .a > .b > .c {\n color: blue;\n}\n")
expectPrintedLower(t, ".foo, .bar, .foo:before, .bar:after { &:hover { color: red } }", ":is(.foo, .bar):hover {\n color: red;\n}\n")
expectPrintedLower(t, ".foo, .bar:before { &:hover { color: red } }", ".foo:hover {\n color: red;\n}\n")
expectPrintedLower(t, ".foo, .bar:before { :hover & { color: red } }", ":hover .foo {\n color: red;\n}\n")
expectPrintedLower(t, ".bar:before { &:hover { color: red } }", ":is():hover {\n color: red;\n}\n")
expectPrintedLower(t, ".bar:before { :hover & { color: red } }", ":hover :is() {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where(&.foo) { color: red } }", ":where(.xy.foo) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where(&.foo) { color: red } }", ":where(div.foo) {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where(.foo&) { color: red } }", ":where(.foo.xy) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where(.foo&) { color: red } }", ":where(.foo:is(div)) {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where([href]&) { color: red } }", ":where([href].xy) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where([href]&) { color: red } }", ":where([href]:is(div)) {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where(:hover&) { color: red } }", ":where(:hover.xy) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where(:hover&) { color: red } }", ":where(:hover:is(div)) {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where(:is(.foo)&) { color: red } }", ":where(:is(.foo).xy) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where(:is(.foo)&) { color: red } }", ":where(:is(.foo):is(div)) {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where(.foo + &) { color: red } }", ":where(.foo + .xy) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where(.foo + &) { color: red } }", ":where(.foo + div) {\n color: red;\n}\n")
expectPrintedLower(t, ".xy { :where(&, span:is(.foo &)) { color: red } }", ":where(.xy, span:is(.foo .xy)) {\n color: red;\n}\n")
expectPrintedLower(t, "div { :where(&, span:is(.foo &)) { color: red } }", ":where(div, span:is(.foo div)) {\n color: red;\n}\n")
expectPrintedLower(t, ".foo { @media screen {} }", "")
expectPrintedLower(t, ".foo { @media screen { color: red } }", "@media screen {\n .foo {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo { @media screen { &:hover { color: red } } }", "@media screen {\n .foo:hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo { @media screen { :hover { color: red } } }", "@media screen {\n .foo :hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo, .bar { @media screen { color: red } }", "@media screen {\n .foo,\n .bar {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo, .bar { @media screen { &:hover { color: red } } }", "@media screen {\n :is(.foo, .bar):hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo, .bar { @media screen { :hover { color: red } } }", "@media screen {\n :is(.foo, .bar) :hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo { @layer xyz {} }", "@layer xyz;\n")
expectPrintedLower(t, ".foo { @layer xyz { color: red } }", "@layer xyz {\n .foo {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo { @layer xyz { &:hover { color: red } } }", "@layer xyz {\n .foo:hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo { @layer xyz { :hover { color: red } } }", "@layer xyz {\n .foo :hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo, .bar { @layer xyz { color: red } }", "@layer xyz {\n .foo,\n .bar {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo, .bar { @layer xyz { &:hover { color: red } } }", "@layer xyz {\n :is(.foo, .bar):hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, ".foo, .bar { @layer xyz { :hover { color: red } } }", "@layer xyz {\n :is(.foo, .bar) :hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, "@media screen { @media (min-width: 900px) { a, b { &:hover { color: red } } } }",
"@media screen {\n @media (min-width: 900px) {\n :is(a, b):hover {\n color: red;\n }\n }\n}\n")
expectPrintedLower(t, "@supports (display: flex) { @supports selector(h2 > p) { a, b { &:hover { color: red } } } }",
"@supports (display: flex) {\n @supports selector(h2 > p) {\n :is(a, b):hover {\n color: red;\n }\n }\n}\n")
expectPrintedLower(t, "@layer foo { @layer bar { a, b { &:hover { color: red } } } }",
"@layer foo {\n @layer bar {\n :is(a, b):hover {\n color: red;\n }\n }\n}\n")
expectPrintedLower(t, ".demo { .lg { &.triangle, &.circle { color: red } } }",
".demo .lg:is(.triangle, .circle) {\n color: red;\n}\n")
expectPrintedLower(t, ".demo { .lg { .triangle, .circle { color: red } } }",
".demo .lg :is(.triangle, .circle) {\n color: red;\n}\n")
expectPrintedLower(t, ".card { .featured & & & { color: red } }",
".featured .card .card .card {\n color: red;\n}\n")
expectPrintedLower(t, ".card { &--header { color: red } }",
"--header.card {\n color: red;\n}\n")
expectPrintedLower(t, ".card { @supports (selector(&)) { &:hover { color: red } } }",
"@supports (selector(&)) {\n .card:hover {\n color: red;\n }\n}\n")
expectPrintedLower(t, "html { @layer base { color: blue; @layer support { & body { color: red } } } }",
"@layer base {\n html {\n color: blue;\n }\n @layer support {\n html body {\n color: red;\n }\n }\n}\n")
}
func TestBadQualifiedRules(t *testing.T) {
expectParseError(t, "$bad: rule;", "$bad: rule; {\n}\n", "<stdin>: WARNING: Unexpected \"$\"\n")
expectParseError(t, "$bad { color: red }", "$bad {\n color: red;\n}\n", "<stdin>: WARNING: Unexpected \"$\"\n")
expectParseError(t, "a { div.major { color: blue } color: red }", "a {\n div.major { color: blue } color: red;\n}\n",
"<stdin>: WARNING: A nested style rule cannot start with \"div\" because it looks like the start of a declaration\n"+
"NOTE: To start a nested style rule with an identifier, you need to wrap the identifier in \":is(...)\" to prevent the rule from being parsed as a declaration.\n")
expectParseError(t, "a { div:hover { color: blue } color: red }", "a {\n div: hover { color: blue } color: red;\n}\n", "")
expectParseError(t, "a { div:hover { color: blue }; color: red }", "a {\n div: hover { color: blue };\n color: red;\n}\n", "")
expectParseError(t, "a { div:hover { color: blue } ; color: red }", "a {\n div: hover { color: blue };\n color: red;\n}\n", "")
expectParseError(t, "! { x: {} }", "! {\n x: {};\n}\n", "<stdin>: WARNING: Unexpected \"!\"\n")
}
func TestAtRule(t *testing.T) {
expectPrinted(t, "@unknown", "@unknown;\n")
expectPrinted(t, "@unknown;", "@unknown;\n")
expectPrinted(t, "@unknown{}", "@unknown {}\n")
expectPrinted(t, "@unknown x;", "@unknown x;\n")
expectPrinted(t, "@unknown{\na: b;\nc: d;\n}", "@unknown { a: b; c: d; }\n")
expectParseError(t, "@unknown", "@unknown;\n", "<stdin>: WARNING: Expected \"{\" but found end of file\n")
expectParseError(t, "@", "@ {\n}\n", "<stdin>: WARNING: Unexpected \"@\"\n")
expectParseError(t, "@;", "@; {\n}\n", "<stdin>: WARNING: Unexpected \"@\"\n")
expectParseError(t, "@{}", "@ {\n}\n", "<stdin>: WARNING: Unexpected \"@\"\n")
expectPrinted(t, "@viewport { width: 100vw }", "@viewport {\n width: 100vw;\n}\n")
expectPrinted(t, "@-ms-viewport { width: 100vw }", "@-ms-viewport {\n width: 100vw;\n}\n")
expectPrinted(t, "@document url(\"https://www.example.com/\") { h1 { color: green } }",
"@document url(https://www.example.com/) {\n h1 {\n color: green;\n }\n}\n")
expectPrinted(t, "@-moz-document url-prefix() { h1 { color: green } }",
"@-moz-document url-prefix() {\n h1 {\n color: green;\n }\n}\n")
expectParseError(t, "@media foo { bar }", "@media foo {\n bar {\n }\n}\n", "<stdin>: WARNING: Unexpected \"}\"\n")
expectParseError(t, "@media foo { bar {}", "@media foo {\n bar {\n }\n}\n", "<stdin>: WARNING: Expected \"}\" to go with \"{\"\n<stdin>: NOTE: The unbalanced \"{\" is here:\n")
expectParseError(t, "@media foo {", "@media foo {\n}\n", "<stdin>: WARNING: Expected \"}\" to go with \"{\"\n<stdin>: NOTE: The unbalanced \"{\" is here:\n")
expectParseError(t, "@media foo", "@media foo {\n}\n", "<stdin>: WARNING: Expected \"{\" but found end of file\n")
expectParseError(t, "@media", "@media {\n}\n", "<stdin>: WARNING: Expected \"{\" but found end of file\n")
// https://www.w3.org/TR/css-page-3/#syntax-page-selector
expectPrinted(t, `
@page :first { margin: 0 }
@page {
@top-left-corner { content: 'tlc' }
@top-left { content: 'tl' }
@top-center { content: 'tc' }
@top-right { content: 'tr' }
@top-right-corner { content: 'trc' }
@bottom-left-corner { content: 'blc' }
@bottom-left { content: 'bl' }
@bottom-center { content: 'bc' }
@bottom-right { content: 'br' }
@bottom-right-corner { content: 'brc' }
@left-top { content: 'lt' }
@left-middle { content: 'lm' }
@left-bottom { content: 'lb' }
@right-top { content: 'rt' }
@right-middle { content: 'rm' }
@right-bottom { content: 'rb' }
}
`, `@page :first {