/
max-len.js
872 lines (852 loc) Β· 29.8 KB
/
max-len.js
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/**
* @fileoverview Tests for max-len rule.
* @author Matt DuVall <http://www.mattduvall.com>
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/max-len"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const parserOptions = { ecmaVersion: 6 };
const ruleTester = new RuleTester();
ruleTester.run("max-len", rule, {
valid: [
"var x = 5;\nvar x = 2;",
{
code: "var x = 5;\nvar x = 2;",
options: [80, 4]
}, {
code: "\t\t\tvar i = 1;\n\t\t\tvar j = 1;",
options: [15, 1]
}, {
code: "var one\t\t= 1;\nvar three\t= 3;",
options: [16, 4]
}, {
code: "\tvar one\t\t= 1;\n\tvar three\t= 3;",
options: [20, 4]
}, {
code: "var i = 1;\r\nvar i = 1;\n",
options: [10, 4]
}, {
code: "\n// Blank line on top\nvar foo = module.exports = {};\n",
options: [80, 4]
},
"\n// Blank line on top\nvar foo = module.exports = {};\n",
{
code: "var foo = module.exports = {}; // really long trailing comment",
options: [40, 4, { ignoreComments: true }]
}, {
code: "foo(); \t// strips entire comment *and* trailing whitespace",
options: [6, 4, { ignoreComments: true }]
}, {
code: "// really long comment on its own line sitting here",
options: [40, 4, { ignoreComments: true }]
}, {
code: "var foo = module.exports = {}; /* inline some other comments */ //more",
options: [40, 4, { ignoreComments: true }]
},
"var /*inline-comment*/ i = 1;",
{
code: "var /*inline-comment*/ i = 1; // with really long trailing comment",
options: [40, 4, { ignoreComments: true }]
}, {
code: "foo('http://example.com/this/is/?a=longish&url=in#here');",
options: [40, 4, { ignoreUrls: true }]
}, {
code: "foo(bar(bazz('this is a long'), 'line of'), 'stuff');",
options: [40, 4, { ignorePattern: "foo.+bazz\\(" }]
}, {
code:
"/* hey there! this is a multiline\n" +
" comment with longish lines in various places\n" +
" but\n" +
" with a short line-length */",
options: [10, 4, { ignoreComments: true }]
}, {
code:
"// I like short comments\n" +
"function butLongSourceLines() { weird(eh()) }",
options: [80, { tabWidth: 4, comments: 30 }]
}, {
code:
"// I like longer comments and shorter code\n" +
"function see() { odd(eh()) }",
options: [30, { tabWidth: 4, comments: 80 }]
}, {
code:
"// Full line comment\n" +
"someCode(); // With a long trailing comment.",
options: [{ code: 30, tabWidth: 4, comments: 20, ignoreTrailingComments: true }]
}, {
code: "var foo = module.exports = {}; // really long trailing comment",
options: [40, 4, { ignoreTrailingComments: true }]
}, {
code: "var foo = module.exports = {}; /* inline some other comments */ //more",
options: [40, 4, { ignoreTrailingComments: true }]
}, {
code: "var foo = module.exports = {}; // really long trailing comment",
options: [40, 4, { ignoreComments: true, ignoreTrailingComments: false }]
},
// ignoreStrings, ignoreTemplateLiterals and ignoreRegExpLiterals options
{
code: "var foo = veryLongIdentifier;\nvar bar = 'this is a very long string';",
options: [29, 4, { ignoreStrings: true }]
},
{
code: "var foo = veryLongIdentifier;\nvar bar = \"this is a very long string\";",
options: [29, 4, { ignoreStrings: true }]
},
{
code: "var str = \"this is a very long string\\\nwith continuation\";",
options: [29, 4, { ignoreStrings: true }]
},
{
code: "var str = \"this is a very long string\\\nwith continuation\\\nand with another very very long continuation\\\nand ending\";",
options: [29, 4, { ignoreStrings: true }]
},
{
code: "var foo = <div className=\"this is a very long string\"></div>;",
options: [29, 4, { ignoreStrings: true }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var foo = veryLongIdentifier;\nvar bar = `this is a very long string`;",
options: [29, 4, { ignoreTemplateLiterals: true }],
parserOptions
},
{
code: "var foo = veryLongIdentifier;\nvar bar = `this is a very long string\nand this is another line that is very long`;",
options: [29, 4, { ignoreTemplateLiterals: true }],
parserOptions
},
{
code: "var foo = veryLongIdentifier;\nvar bar = `this is a very long string\nand this is another line that is very long\nand here is another\n and another!`;",
options: [29, 4, { ignoreTemplateLiterals: true }],
parserOptions
},
{
code: "var foo = /this is a very long pattern/;",
options: [29, 4, { ignoreRegExpLiterals: true }]
},
// check indented comment lines - https://github.com/eslint/eslint/issues/6322
{
code: "function foo() {\n" +
"//this line has 29 characters\n" +
"}",
options: [40, 4, { comments: 29 }]
}, {
code: "function foo() {\n" +
" //this line has 33 characters\n" +
"}",
options: [40, 4, { comments: 33 }]
}, {
code: "function foo() {\n" +
"/*this line has 29 characters\n" +
"and this one has 21*/\n" +
"}",
options: [40, 4, { comments: 29 }]
}, {
code: "function foo() {\n" +
" /*this line has 33 characters\n" +
" and this one has 25*/\n" +
"}",
options: [40, 4, { comments: 33 }]
}, {
code: "function foo() {\n" +
" var a; /*this line has 40 characters\n" +
" and this one has 36 characters*/\n" +
"}",
options: [40, 4, { comments: 36 }]
}, {
code: "function foo() {\n" +
" /*this line has 33 characters\n" +
" and this one has 43 characters*/ var a;\n" +
"}",
options: [43, 4, { comments: 33 }]
},
// blank line
"",
// Multi-code-point unicode glyphs
{
code: "'ππππππππ'",
options: [10]
},
// Astral symbols in pattern (only matched by unicode regexes)
{
code: "var longNameLongName = 'ππ'",
options: [5, { ignorePattern: "π{2}" }]
},
{
code: "\tfoo",
options: [4, { tabWidth: 0 }]
},
// https://github.com/eslint/eslint/issues/12213
{
code: "var jsx = (<>\n" +
" { /* this line has 38 characters */}\n" +
"</>)",
options: [15, { comments: 38 }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = (<>\n" +
"\t\t{ /* this line has 40 characters */}\n" +
"</>)",
options: [15, 4, { comments: 44 }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = (<>\n" +
" <> text </>{ /* this line has 49 characters */}\n" +
"</>)",
options: [13, { ignoreComments: true }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = (<>\n" +
" {/* this line has 37 characters */}\n" +
" <> </> {/* this line has 44 characters */}\n" +
"</>)",
options: [44, { comments: 37 }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = (<>\n" +
" {/* this line has 37 characters */}\n" +
" <> </> {/* this line has 44 characters */}\n" +
"</>)",
options: [37, { ignoreTrailingComments: true }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = <Foo>\n" +
" attr = {a && b/* this line has 57 characters */}\n" +
"</Foo>;",
options: [57],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = <Foo>\n" +
" attr = {/* this line has 57 characters */a && b}\n" +
"</Foo>;",
options: [57],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = <Foo>\n" +
" attr = \n" +
" {/* this line has 45 characters */}\n" +
"</Foo>;",
options: [20, { comments: 45 }],
parserOptions: { ecmaFeatures: { jsx: true } }
},
{
code: "var jsx = <Foo>\n" +
" attr = \n" +
" {/* this line has 45 characters */}\n" +
"</Foo>;",
options: [20, { ignoreComments: true }],
parserOptions: { ecmaFeatures: { jsx: true } }
}
],
invalid: [
{
code: "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tvar i = 1;",
errors: [
{
messageId: "max",
data: { lineLength: 86, maxLength: 80 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "var x = 5, y = 2, z = 5;",
options: [10, 4],
errors: [
{
messageId: "max",
data: { lineLength: 24, maxLength: 10 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "\t\t\tvar i = 1;",
options: [15, 4],
errors: [
{
messageId: "max",
data: { lineLength: 22, maxLength: 15 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "\t\t\tvar i = 1;\n\t\t\tvar j = 1;",
options: [15, 4],
errors: [
{
messageId: "max",
data: { lineLength: 22, maxLength: 15 },
type: "Program",
line: 1,
column: 1
},
{
messageId: "max",
data: { lineLength: 22, maxLength: 15 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var /*this is a long non-removed inline comment*/ i = 1;",
options: [20, 4, { ignoreComments: true }],
errors: [
{
messageId: "max",
data: { lineLength: 56, maxLength: 20 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code:
"var foobar = 'this line isn\\'t matched by the regexp';\n" +
"var fizzbuzz = 'but this one is matched by the regexp';\n",
options: [20, 4, { ignorePattern: "fizzbuzz" }],
errors: [
{
messageId: "max",
data: { lineLength: 54, maxLength: 20 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "var longLine = 'will trigger'; // even with a comment",
options: [10, 4, { ignoreComments: true }],
errors: [
{
messageId: "max",
data: { lineLength: 30, maxLength: 10 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "var foo = module.exports = {}; // really long trailing comment",
options: [40, 4], // ignoreComments is disabled
errors: [
{
messageId: "max",
data: { lineLength: 62, maxLength: 40 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "foo('http://example.com/this/is/?a=longish&url=in#here');",
options: [40, 4], // ignoreUrls is disabled
errors: [
{
messageId: "max",
data: { lineLength: 57, maxLength: 40 },
type: "Program",
line: 1,
column: 1
}
]
}, {
code: "foo(bar(bazz('this is a long'), 'line of'), 'stuff');",
options: [40, 4], // ignorePattern is disabled
errors: [
{
messageId: "max",
data: { lineLength: 53, maxLength: 40 },
type: "Program",
line: 1,
column: 1
}
]
}, {
code: "// A comment that exceeds the max comment length.",
options: [80, 4, { comments: 20 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 49, maxCommentLength: 20 },
type: "Program",
line: 1,
column: 1
}
]
}, {
code: "// A comment that exceeds the max comment length and the max code length, but will fail for being too long of a comment",
options: [40, 4, { comments: 80 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 119, maxCommentLength: 80 },
type: "Program",
line: 1,
column: 1
}
]
}, {
code: "// A comment that exceeds the max comment length.",
options: [{ code: 20 }],
errors: [
{
messageId: "max",
data: { lineLength: 49, maxLength: 20 },
type: "Program",
line: 1,
column: 1
}
]
}, {
code: "//This is very long comment with more than 40 characters which is invalid",
options: [40, 4, { ignoreTrailingComments: true }],
errors: [
{
messageId: "max",
data: { lineLength: 73, maxLength: 40 },
type: "Program",
line: 1,
column: 1
}
]
},
// check indented comment lines - https://github.com/eslint/eslint/issues/6322
{
code: "function foo() {\n" +
"//this line has 29 characters\n" +
"}",
options: [40, 4, { comments: 28 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 29, maxCommentLength: 28 },
type: "Program",
line: 2,
column: 1
}
]
}, {
code: "function foo() {\n" +
" //this line has 33 characters\n" +
"}",
options: [40, 4, { comments: 32 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 33, maxCommentLength: 32 },
type: "Program",
line: 2,
column: 1
}
]
}, {
code: "function foo() {\n" +
"/*this line has 29 characters\n" +
"and this one has 32 characters*/\n" +
"}",
options: [40, 4, { comments: 28 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 29, maxCommentLength: 28 },
type: "Program",
line: 2,
column: 1
},
{
messageId: "maxComment",
data: { lineLength: 32, maxCommentLength: 28 },
type: "Program",
line: 3,
column: 1
}
]
}, {
code: "function foo() {\n" +
" /*this line has 33 characters\n" +
" and this one has 36 characters*/\n" +
"}",
options: [40, 4, { comments: 32 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 33, maxCommentLength: 32 },
type: "Program",
line: 2,
column: 1
},
{
messageId: "maxComment",
data: { lineLength: 36, maxCommentLength: 32 },
type: "Program",
line: 3,
column: 1
}
]
}, {
code: "function foo() {\n" +
" var a; /*this line has 40 characters\n" +
" and this one has 36 characters*/\n" +
"}",
options: [39, 4, { comments: 35 }],
errors: [
{
messageId: "max",
data: { lineLength: 40, maxLength: 39 },
type: "Program",
line: 2,
column: 1
},
{
messageId: "maxComment",
data: { lineLength: 36, maxCommentLength: 35 },
type: "Program",
line: 3,
column: 1
}
]
}, {
code: "function foo() {\n" +
" /*this line has 33 characters\n" +
" and this one has 43 characters*/ var a;\n" +
"}",
options: [42, 4, { comments: 32 }],
errors: [
{
messageId: "maxComment",
data: { lineLength: 33, maxCommentLength: 32 },
type: "Program",
line: 2,
column: 1
},
{
messageId: "max",
data: { lineLength: 43, maxLength: 42 },
type: "Program",
line: 3,
column: 1
}
]
},
// check comments with the same length as non-comments - https://github.com/eslint/eslint/issues/6564
{
code: "// This commented line has precisely 51 characters.\n" +
"var x = 'This line also has exactly 51 characters';",
options: [20, { ignoreComments: true }],
errors: [
{
messageId: "max",
data: { lineLength: 51, maxLength: 20 },
type: "Program",
line: 2,
column: 1
}
]
},
// ignoreStrings and ignoreTemplateLiterals options
{
code: "var foo = veryLongIdentifier;\nvar bar = 'this is a very long string';",
options: [29, { ignoreStrings: false, ignoreTemplateLiterals: true }],
errors: [
{
messageId: "max",
data: { lineLength: 39, maxLength: 29 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var foo = veryLongIdentifier;\nvar bar = /this is a very very long pattern/;",
options: [29, { ignoreStrings: false, ignoreRegExpLiterals: false }],
errors: [
{
messageId: "max",
data: { lineLength: 45, maxLength: 29 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var foo = veryLongIdentifier;\nvar bar = new RegExp('this is a very very long pattern');",
options: [29, { ignoreStrings: false, ignoreRegExpLiterals: true }],
errors: [
{
messageId: "max",
data: { lineLength: 57, maxLength: 29 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var foo = veryLongIdentifier;\nvar bar = \"this is a very long string\";",
options: [29, { ignoreStrings: false, ignoreTemplateLiterals: true }],
errors: [
{
messageId: "max",
data: { lineLength: 39, maxLength: 29 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var foo = veryLongIdentifier;\nvar bar = `this is a very long string`;",
options: [29, { ignoreStrings: false, ignoreTemplateLiterals: false }],
parserOptions,
errors: [
{
messageId: "max",
data: { lineLength: 39, maxLength: 29 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var foo = veryLongIdentifier;\nvar bar = `this is a very long string\nand this is another line that is very long`;",
options: [29, { ignoreStrings: false, ignoreTemplateLiterals: false }],
parserOptions,
errors: [
{
messageId: "max",
data: { lineLength: 37, maxLength: 29 },
type: "Program",
line: 2,
column: 1
},
{
messageId: "max",
data: { lineLength: 44, maxLength: 29 },
type: "Program",
line: 3,
column: 1
}
]
},
{
code: "var foo = <div>this is a very very very long string</div>;",
options: [29, 4, { ignoreStrings: true }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 58, maxLength: 29 },
type: "Program",
line: 1,
column: 1
}
]
},
// Multi-code-point unicode glyphs
{
code: "'πππβΉοΈπ£ππ©π±π'",
options: [10],
errors: [
{
messageId: "max",
data: { lineLength: 12, maxLength: 10 },
type: "Program",
line: 1,
column: 1
}
]
},
{
code: "a",
options: [0],
errors: [
{
messageId: "max",
data: { lineLength: 1, maxLength: 0 },
type: "Program",
line: 1,
column: 1
}
]
},
// https://github.com/eslint/eslint/issues/12213
{
code: "var jsx = (<>\n" +
" { /* this line has 38 characters */}\n" +
"</>)",
options: [15, { comments: 37 }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "maxComment",
data: { lineLength: 38, maxCommentLength: 37 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = (<>\n" +
"\t\t{ /* this line has 40 characters */}\n" +
"</>)",
options: [15, 4, { comments: 40 }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "maxComment",
data: { lineLength: 44, maxCommentLength: 40 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = (<>\n" +
"{ 38/* this line has 38 characters */}\n" +
"</>)",
options: [15, { comments: 37 }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 38, maxLength: 15 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = (<>\n" +
" <> 50 </>{ 50/* this line has 50 characters */}\n" +
"</>)",
options: [49, { comments: 100 }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 50, maxLength: 49 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = (<>\n" +
" {/* this line has 44 characters */}\n" +
" <> </> {/* this line has 44 characters */}\n" +
"</>)",
options: [37, { ignoreTrailingComments: true }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 44, maxLength: 37 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = <Foo>\n" +
" attr = {a && b/* this line has 57 characters */}\n" +
"</Foo>;",
options: [56],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 57, maxLength: 56 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = <Foo>\n" +
" attr = {/* this line has 57 characters */a && b}\n" +
"</Foo>;",
options: [56],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 57, maxLength: 56 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = <Foo>\n" +
" attr = {a & b/* this line has 56 characters */}\n" +
"</Foo>;",
options: [55, { ignoreTrailingComments: true }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "max",
data: { lineLength: 56, maxLength: 55 },
type: "Program",
line: 2,
column: 1
}
]
},
{
code: "var jsx = <Foo>\n" +
" attr = \n" +
" {/* this line has 45 characters */}\n" +
"</Foo>;",
options: [80, { comments: 44 }],
parserOptions: { ecmaFeatures: { jsx: true } },
errors: [
{
messageId: "maxComment",
data: { lineLength: 45, maxCommentLength: 44 },
type: "Program",
line: 3,
column: 1
}
]
}
]
});