forked from webpack-contrib/style-loader
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basic.test.js
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basic.test.js
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// Node v4 requires "use strict" to allow block scoped let & const
"use strict";
describe("basic tests", function() {
var path = require("path");
var utils = require("./utils"),
runCompilerTest = utils.runCompilerTest,
runSourceTest = utils.runSourceTest;
var fs;
var requiredCss = ".required { color: blue }",
requiredCssTwo = ".requiredTwo { color: cyan }",
localScopedCss = ":local(.className) { background: red; }",
localComposingCss = `
:local(.composingClass) {
composes: className from './localScoped.css';
color: blue;
}
`,
requiredStyle = `<style type="text/css">${requiredCss}</style>`,
existingStyle = `<style id="existing-style">.existing { color: yellow }</style>`,
checkValue = '<div class="check">check</div>',
rootDir = path.resolve(__dirname + "/../") + "/",
jsdomHtml = [
"<html>",
"<head>",
existingStyle,
"</head>",
"<body>",
"<div class='target'>",
checkValue,
"</div>",
"<iframe class='iframeTarget'/>",
"</body>",
"</html>"
].join("\n"),
requiredJS = [
"var el = document.createElement('div');",
"el.id = \"test-shadow\";",
// "var shadow = el.attachShadow({ mode: 'open' })", // sadly shadow dom not working in jsdom
"document.body.appendChild(el)",
"var css = require('./style.css');",
].join("\n");
var styleLoaderOptions = {};
var cssRule = {};
var defaultCssRule = {
test: /\.css?$/,
use: [
{
loader: "style-loader",
options: styleLoaderOptions
},
"css-loader"
]
};
var webpackConfig = {
entry: "./main.js",
output: {
filename: "bundle.js"
},
module: {
rules: [cssRule]
}
};
var setupWebpackConfig = function() {
fs = utils.setup(webpackConfig, jsdomHtml);
// Create a tiny file system. rootDir is used because loaders are referring to absolute paths.
fs.mkdirpSync(rootDir);
fs.writeFileSync(rootDir + "main.js", requiredJS);
fs.writeFileSync(rootDir + "style.css", requiredCss);
fs.writeFileSync(rootDir + "styleTwo.css", requiredCssTwo);
fs.writeFileSync(rootDir + "localScoped.css", localScopedCss);
fs.writeFileSync(rootDir + "localComposing.css", localComposingCss);
};
beforeEach(function() {
// Reset all style-loader options
for (var member in styleLoaderOptions) {
delete styleLoaderOptions[member];
}
for (var member in defaultCssRule) {
cssRule[member] = defaultCssRule[member];
}
setupWebpackConfig();
}); // before each
it("insert at bottom", function(done) {
let expected = [existingStyle, requiredStyle].join("\n");
runCompilerTest(expected, done);
}); // it insert at bottom
it("insert at top", function(done) {
styleLoaderOptions.insertAt = "top";
let expected = [requiredStyle, existingStyle].join("\n");
runCompilerTest(expected, done);
}); // it insert at top
it("insert at before", function(done) {
styleLoaderOptions.insertAt = {
before: "#existing-style"
};
let expected = [requiredStyle, existingStyle].join("");
runCompilerTest(expected, done);
}); // it insert at before
it("insert at before invalid selector", function(done) {
styleLoaderOptions.insertAt = {
before: "#missing"
};
let expected = [existingStyle, requiredStyle].join("\n");
runCompilerTest(expected, done);
}); // it insert at before
it("insert into", function(done) {
let selector = "div.target";
styleLoaderOptions.insertInto = selector;
let expected = [checkValue, requiredStyle].join("\n");
runCompilerTest(expected, done, undefined, selector);
}); // it insert into
it("insert into iframe", function(done) {
let selector = "iframe.iframeTarget";
styleLoaderOptions.insertInto = selector;
let expected = requiredStyle;
runCompilerTest(expected, done, function() {
return this.document.querySelector(selector).contentDocument.head.innerHTML;
}, selector);
}); // it insert into
it("insert into custom element by function", function(done) {
const selector = "#test-shadow";
styleLoaderOptions.insertInto = () => document.querySelector("#test-shadow");
let expected = requiredStyle;
runCompilerTest(expected, done, function() {
return this.document.querySelector(selector).innerHTML;
}, selector);
});
it("singleton (true)", function(done) {
// Setup
styleLoaderOptions.singleton = true;
fs.writeFileSync(
rootDir + "main.js",
[
"var a = require('./style.css');",
"var b = require('./styleTwo.css');"
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style type="text/css">${requiredCss}${requiredCssTwo}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it singleton
it("singleton (false)", function(done) {
// Setup
styleLoaderOptions.singleton = false;
fs.writeFileSync(
rootDir + "main.js",
[
"var a = require('./style.css');",
"var b = require('./styleTwo.css');"
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style type="text/css">${requiredCss}</style><style type="text/css">${requiredCssTwo}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it singleton
it("attrs", function(done) {
// Setup
styleLoaderOptions.attrs = {id: 'style-tag-id'};
fs.writeFileSync(
rootDir + "main.js",
[
"var a = require('./style.css');"
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style id="${styleLoaderOptions.attrs.id}" type="text/css">${requiredCss}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it attrs
it("nonce", function(done) {
// Setup
const expectedNonce = "testNonce";
fs.writeFileSync(
rootDir + "main.js",
[
`__webpack_nonce__ = '${expectedNonce}'`,
"var a = require('./style.css');"
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style type="text/css" nonce="${expectedNonce}">${requiredCss}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it attrs
it("type attribute", function(done) {
// Setup
styleLoaderOptions.attrs = {type: 'text/less'};
fs.writeFileSync(
rootDir + "main.js",
[
"var a = require('./style.css');"
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style type="${styleLoaderOptions.attrs.type}">${requiredCss}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it type attribute
it("url", function(done) {
cssRule.use = [
{
loader: "style-loader/url",
options: {}
},
"file-loader"
];
// Run
let expected = [
existingStyle,
'<link rel="stylesheet" type="text/css" href="ec9d4f4f24028c3d51bf1e7728e632ff.css">'
].join("\n");
runCompilerTest(expected, done);
}); // it url
it("url with attrs", function (done) {
cssRule.use = [
{
loader: "style-loader/url",
options: {
attrs: {
'data-attr-1': 'attr-value-1',
'data-attr-2': 'attr-value-2'
}
}
},
"file-loader"
];
// Run
let expected = [
existingStyle,
'<link rel="stylesheet" type="text/css" href="ec9d4f4f24028c3d51bf1e7728e632ff.css" data-attr-1="attr-value-1" data-attr-2="attr-value-2">'
].join("\n");
runCompilerTest(expected, done);
}); // it url with attrs
it("url with type attribute", function (done) {
cssRule.use = [
{
loader: "style-loader/url",
options: {
attrs: {
type: 'text/less'
}
}
},
"file-loader"
];
// Run
let expected = [
existingStyle,
'<link rel="stylesheet" type="text/less" href="ec9d4f4f24028c3d51bf1e7728e632ff.css">'
].join("\n");
runCompilerTest(expected, done);
}); // it url with type attribute
it("useable", function(done) {
cssRule.use = [
{
loader: "style-loader/useable"
},
"css-loader"
];
fs.writeFileSync(
rootDir + "main.js",
[
"var css = require('./style.css');",
"var cssTwo = require('./styleTwo.css');",
"css.use();",
"cssTwo.use();",
"css.unuse();"
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style type="text/css">${requiredCssTwo}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it useable
it("useable without negative refs", function(done) {
cssRule.use = [
{
loader: "style-loader/useable"
},
"css-loader"
];
fs.writeFileSync(
rootDir + "main.js",
[
"var css = require('./style.css');",
"css.unuse();", // ref still 0
"css.use();", // ref 1
].join("\n")
);
// Run
let expected = [
existingStyle,
`<style type="text/css">${requiredCss}</style>`
].join("\n");
runCompilerTest(expected, done);
}); // it useable
it("local scope", function(done) {
cssRule.use = [
{
loader: "style-loader"
},
{
loader: "css-loader",
options: {
localIdentName: '[name].[local]_[hash:base64:7]'
}
}
];
fs.writeFileSync(
rootDir + "main.js",
[
"css = require('./localScoped.css');"
].join("\n")
);
let expected = 'localScoped-className_3dIU6Uf';
runCompilerTest(expected, done, function() { return this.css.className; });
}); // it local scope
it("local scope, composing", function(done) {
cssRule.use = [
{
loader: "style-loader"
},
{
loader: "css-loader",
options: {
localIdentName: '[name].[local]_[hash:base64:7]'
}
}
];
fs.writeFileSync(
rootDir + "main.js",
[
"css = require('./localComposing.css');"
].join("\n")
);
let expected =
'localComposing-composingClass_3kXcqag localScoped-className_3dIU6Uf';
runCompilerTest(expected, done, function() {
return this.css.composingClass;
});
}); // it local scope, composing
it("local scope, composing, custom getLocalIdent", function(done) {
cssRule.use = [
{
loader: "style-loader"
},
{
loader: "css-loader",
options: {
ident: 'css',
localIdentName: '[name].[local]_[hash:base64:7]',
getLocalIdent: (context, localIdentName, localName) => {
return 'X' + localName;
}
}
}
];
fs.writeFileSync(
rootDir + "main.js",
[
"css = require('./localComposing.css');"
].join("\n")
);
let expected =
'XcomposingClass XclassName';
runCompilerTest(expected, done, function() {
return this.css.composingClass;
});
}); // it local scope, composing, custom getLocalIdent
it("local scope, useable", function(done) {
cssRule.use = [
{
loader: "style-loader/useable"
},
{
loader: "css-loader",
options: {
localIdentName: '[name].[local]_[hash:base64:7]'
}
}
];
fs.writeFileSync(
rootDir + "main.js",
[
"css = require('./localScoped.css');"
].join("\n")
);
let expected = 'localScoped-className_3dIU6Uf';
runCompilerTest(expected, done, function() { return this.css.locals.className; });
}); // it local scope
describe("transform function", function() {
it("should not load the css if the transform function returns false", function(done) {
styleLoaderOptions.transform = 'test/transforms/false';
const expected = existingStyle;
runCompilerTest(expected, done);
});
it("should not load the css if the transform function returns undefined", function(done) {
styleLoaderOptions.transform = 'test/transforms/noop';
const expected = existingStyle;
runCompilerTest(expected, done);
});
it("should load the transformed css returned by the transform function", function(done) {
const transform = require('./transforms/transform');
styleLoaderOptions.transform = 'test/transforms/transform';
const expectedTansformedStyle = transform(requiredStyle);
const expected = [existingStyle, expectedTansformedStyle].join("\n");
runCompilerTest(expected, done);
});
});
describe("HMR", function() {
it("should output HMR code block by default", function(done) {
runSourceTest(/module\.hot/g, null, done);
});
it("should output HMR code block when options.hmr is true", function(done) {
styleLoaderOptions.hmr = true;
setupWebpackConfig();
runSourceTest(/module\.hot/g, null, done);
});
it("should not output HMR code block when options.hmr is false", function(done) {
styleLoaderOptions.hmr = false;
setupWebpackConfig();
runSourceTest(null, /module\.hot/g, done);
});
});
});