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no-mixed-spaces-and-tabs.js
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no-mixed-spaces-and-tabs.js
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/**
* @fileoverview Disallow mixed spaces and tabs for indentation
* @author Jary Niebur
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/no-mixed-spaces-and-tabs"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("no-mixed-spaces-and-tabs", rule, {
valid: [
"foo",
"foo \t",
"foo\t ",
"\tvar x = 5;",
"\t\tvar x = 5;",
" var x = 5;",
" var x = 5;",
" foo\t",
"\tfoo ",
"\t/*\n\t * Hello\n\t */",
"// foo\n\t/**\n\t * Hello\n\t */",
"/*\n\n \t \n*/",
"/*\t */ //",
"/*\n \t*/ //",
"/*\n\t *//*\n \t*/",
"// \t",
"/*\n*/\t ",
"/* \t\n\t \n \t\n\t */ \t",
{
code: "\tvar x = 5,\n\t y = 2;",
options: [true]
},
{
code: "/*\n\t */`\n\t `;",
env: { es6: true }
},
{
code: "/*\n\t */var a = `\n\t `, b = `\n\t `/*\t \n\t \n*/;",
env: { es6: true }
},
{
code: "/*\t `template inside comment` */",
env: { es6: true }
},
{
code: "var foo = `\t /* comment inside template\t */`;",
env: { es6: true }
},
{
code: "`\n\t `;",
env: { es6: true }
},
{
code: "`\n\t \n`;",
env: { es6: true }
},
{
code: "`\t `;",
env: { es6: true }
},
{
code: "const foo = `${console}\n\t foo`;",
env: { es6: true }
},
{
code: "`\t `;` \t`",
env: { es6: true }
},
{
code: "`foo${ 5 }\t `;",
env: { es6: true }
},
"' \t\\\n\t multiline string';",
"'\t \\\n \tmultiline string';",
{
code: "\tvar x = 5,\n\t y = 2;",
options: ["smart-tabs"]
},
{
code: "\t\t\t foo",
options: ["smart-tabs"]
},
{
code: "foo",
options: ["smart-tabs"]
},
{
code: "foo \t",
options: ["smart-tabs"]
},
{
code: "foo\t ",
options: ["smart-tabs"]
},
{
code: "\tfoo \t",
options: ["smart-tabs"]
},
{
code: "\tvar x = 5;",
options: ["smart-tabs"]
},
{
code: "\t\tvar x = 5;",
options: ["smart-tabs"]
},
{
code: " var x = 5;",
options: ["smart-tabs"]
},
{
code: " var x = 5;",
options: ["smart-tabs"]
},
{
code: " foo\t",
options: ["smart-tabs"]
},
{
code: "\tfoo ",
options: ["smart-tabs"]
}
],
invalid: [
{
code: "function add(x, y) {\n\t return x + y;\n}",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 1,
endLine: 2,
endColumn: 3
}
]
},
{
code: "\t ;\n/*\n\t * Hello\n\t */",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 1,
endLine: 1,
endColumn: 3
}
]
},
{
code: " \t/* comment */",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 1,
endLine: 1,
endColumn: 3
}
]
},
{
code: "\t // comment",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 1,
endLine: 1,
endColumn: 3
}
]
},
{
code: "\t var a /* comment */ = 1;",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 1,
endLine: 1,
endColumn: 3
}
]
},
{
code: " \tvar b = 1; // comment",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 1,
endLine: 1,
endColumn: 3
}
]
},
{
code: "/**/\n \t/*\n \t*/",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 1,
endLine: 2,
endColumn: 3
}
]
},
{
code: "\t var x = 5, y = 2, z = 5;\n\n\t \tvar j =\t x + y;\nz *= j;",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 1,
endLine: 1,
endColumn: 3
},
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 3,
column: 1,
endLine: 3,
endColumn: 3
}
]
},
{
code: "\tvar x = 5,\n \t y = 2;",
options: [true],
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 2,
endLine: 2,
endColumn: 4
}
]
},
{
code: "\tvar x = 5,\n \t y = 2;",
options: ["smart-tabs"],
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 2,
endLine: 2,
endColumn: 4
}
]
},
{
code: "`foo${\n \t 5 }bar`;",
options: ["smart-tabs"],
env: { es6: true },
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 1,
endLine: 2,
endColumn: 3
}
]
},
{
code: "`foo${\n\t 5 }bar`;",
env: { es6: true },
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 1,
endLine: 2,
endColumn: 3
}
]
},
{
code: " \t'';",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 2,
endLine: 1,
endColumn: 4
}
]
},
{
code: "''\n\t ",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 2,
column: 1,
endLine: 2,
endColumn: 3
}
]
},
{
code: " \tfoo",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 3,
endLine: 1,
endColumn: 5
}
]
},
{
code: "\t\t\t foo",
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 3,
endLine: 1,
endColumn: 5
}
]
},
{
code: "\t \tfoo",
options: ["smart-tabs"],
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 2,
endLine: 1,
endColumn: 4
}
]
},
{
code: "\t\t\t \tfoo",
options: ["smart-tabs"],
errors: [
{
messageId: "mixedSpacesAndTabs",
type: "Program",
line: 1,
column: 6,
endLine: 1,
endColumn: 8
}
]
}
]
});