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space-before-function-paren.js
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space-before-function-paren.js
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/**
* @fileoverview Tests for space-before-function-paren.
* @author Mathias Schreck <https://github.com/lo1tuma>
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/space-before-function-paren");
const { RuleTester } = require("../../../lib/rule-tester");
const baseParser = require("../../fixtures/fixture-parser");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("space-before-function-paren", rule, {
valid: [
"function foo () {}",
"var foo = function () {}",
"var bar = function foo () {}",
"var bar = function foo/**/ () {}",
"var bar = function foo /**/() {}",
"var bar = function foo/**/\n() {}",
"var bar = function foo\n/**/() {}",
"var bar = function foo//\n() {}",
"var obj = { get foo () {}, set foo (val) {} };",
{
code: "var obj = { foo () {} };",
parserOptions: { ecmaVersion: 6 }
},
{ code: "function* foo () {}", parserOptions: { ecmaVersion: 6 } },
{ code: "var foo = function *() {};", parserOptions: { ecmaVersion: 6 } },
{ code: "function foo() {}", options: ["never"] },
{ code: "var foo = function() {}", options: ["never"] },
{ code: "var foo = function/**/() {}", options: ["never"] },
{ code: "var foo = function/* */() {}", options: ["never"] },
{ code: "var foo = function/* *//* */() {}", options: ["never"] },
{ code: "var bar = function foo() {}", options: ["never"] },
{ code: "var obj = { get foo() {}, set foo(val) {} };", options: ["never"] },
{
code: "var obj = { foo() {} };",
options: ["never"],
parserOptions: { ecmaVersion: 6 }
},
{
code: "function* foo() {}",
options: ["never"],
parserOptions: { ecmaVersion: 6 }
},
{
code: "var foo = function*() {};",
options: ["never"],
parserOptions: { ecmaVersion: 6 }
},
{
code: [
"function foo() {}",
"var bar = function () {}",
"function* baz() {}",
"var bat = function*() {};",
"var obj = { get foo() {}, set foo(val) {}, bar() {} };"
].join("\n"),
options: [{ named: "never", anonymous: "always" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: [
"function foo () {}",
"var bar = function() {}",
"function* baz () {}",
"var bat = function* () {};",
"var obj = { get foo () {}, set foo (val) {}, bar () {} };"
].join("\n"),
options: [{ named: "always", anonymous: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "class Foo { constructor() {} *method() {} }",
options: [{ named: "never", anonymous: "always" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "class Foo { constructor () {} *method () {} }",
options: [{ named: "always", anonymous: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "var foo = function() {}",
options: [{ named: "always", anonymous: "ignore" }]
},
{
code: "var foo = function () {}",
options: [{ named: "always", anonymous: "ignore" }]
},
{
code: "var bar = function foo() {}",
options: [{ named: "ignore", anonymous: "always" }]
},
{
code: "var bar = function foo () {}",
options: [{ named: "ignore", anonymous: "always" }]
},
{
code: "type TransformFunction = (el: ASTElement, code: string) => string;",
parser: baseParser("babel-eslint7", "function-type-annotation")
},
// Async arrow functions
{ code: "() => 1", parserOptions: { ecmaVersion: 6 } },
{ code: "async a => a", parserOptions: { ecmaVersion: 8 } },
{ code: "async a => a", options: [{ asyncArrow: "always" }], parserOptions: { ecmaVersion: 8 } },
{ code: "async a => a", options: [{ asyncArrow: "never" }], parserOptions: { ecmaVersion: 8 } },
{ code: "async () => 1", options: [{ asyncArrow: "always" }], parserOptions: { ecmaVersion: 8 } },
{ code: "async() => 1", options: [{ asyncArrow: "never" }], parserOptions: { ecmaVersion: 8 } },
{ code: "async () => 1", options: [{ asyncArrow: "ignore" }], parserOptions: { ecmaVersion: 8 } },
{ code: "async() => 1", options: [{ asyncArrow: "ignore" }], parserOptions: { ecmaVersion: 8 } },
{ code: "async () => 1", parserOptions: { ecmaVersion: 8 } },
{ code: "async () => 1", options: ["always"], parserOptions: { ecmaVersion: 8 } },
{ code: "async() => 1", options: ["never"], parserOptions: { ecmaVersion: 8 } }
],
invalid: [
{
code: "function foo() {}",
output: "function foo () {}",
errors: [
{
type: "FunctionDeclaration",
messageId: "missingSpace",
line: 1,
column: 13,
endColumn: 14
}
]
},
{
code: "function foo/* */() {}",
output: "function foo /* */() {}",
errors: [
{
type: "FunctionDeclaration",
messageId: "missingSpace",
line: 1,
column: 18,
endColumn: 19
}
]
},
{
code: "var foo = function() {}",
output: "var foo = function () {}",
errors: [
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 19
}
]
},
{
code: "var bar = function foo() {}",
output: "var bar = function foo () {}",
errors: [
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 23
}
]
},
{
code: "var obj = { get foo() {}, set foo(val) {} };",
output: "var obj = { get foo () {}, set foo (val) {} };",
errors: [
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 20
},
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 34
}
]
},
{
code: "var obj = { foo() {} };",
output: "var obj = { foo () {} };",
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 16
}
]
},
{
code: "function* foo() {}",
output: "function* foo () {}",
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionDeclaration",
messageId: "missingSpace",
line: 1,
column: 14
}
]
},
{
code: "function foo () {}",
output: "function foo() {}",
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13,
endColumn: 14
}
]
},
{
code: "function foo /* */ () {}",
output: "function foo/* */() {}",
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13
}
]
},
{
code: "function foo/* block comment */ () {}",
output: "function foo/* block comment */() {}",
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13
}
]
},
{
code: "function foo/* 1 */ /* 2 */ \n /* 3 */\n/* 4 */ () {}",
output: "function foo/* 1 *//* 2 *//* 3 *//* 4 */() {}",
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13
}
]
},
{
code: "function foo () {}",
output: "function foo() {}",
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13,
endColumn: 15
}
]
},
{
code: "function foo//\n() {}",
output: null,
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13,
endLine: 2,
endColumn: 1
}
]
},
{
code: "function foo // line comment \n () {}",
output: null,
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13
}
]
},
{
code: "function foo\n//\n() {}",
output: null,
options: ["never"],
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13
}
]
},
{
code: "var foo = function () {}",
output: "var foo = function() {}",
options: ["never"],
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 19,
endColumn: 20
}
]
},
{
code: "var bar = function foo () {}",
output: "var bar = function foo() {}",
options: ["never"],
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 23
}
]
},
{
code: "var obj = { get foo () {}, set foo (val) {} };",
output: "var obj = { get foo() {}, set foo(val) {} };",
options: ["never"],
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 20
},
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 35
}
]
},
{
code: "var obj = { foo () {} };",
output: "var obj = { foo() {} };",
options: ["never"],
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 16
}
]
},
{
code: "function* foo () {}",
output: "function* foo() {}",
options: ["never"],
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 14
}
]
},
{
code: [
"function foo () {}",
"var bar = function() {}",
"var obj = { get foo () {}, set foo (val) {}, bar () {} };"
].join("\n"),
output: [
"function foo() {}",
"var bar = function () {}",
"var obj = { get foo() {}, set foo(val) {}, bar() {} };"
].join("\n"),
options: [{ named: "never", anonymous: "always" }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionDeclaration",
messageId: "unexpectedSpace",
line: 1,
column: 13
},
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 2,
column: 19
},
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 3,
column: 20
},
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 3,
column: 35
},
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 3,
column: 49
}
]
},
{
code: "class Foo { constructor () {} *method () {} }",
output: "class Foo { constructor() {} *method() {} }",
options: [{ named: "never", anonymous: "always" }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 24
},
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 38
}
]
},
{
code: "var foo = { bar () {} }",
output: "var foo = { bar() {} }",
options: [{ named: "never", anonymous: "always" }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 16
}
]
},
{
code: [
"function foo() {}",
"var bar = function () {}",
"var obj = { get foo() {}, set foo(val) {}, bar() {} };"
].join("\n"),
output: [
"function foo () {}",
"var bar = function() {}",
"var obj = { get foo () {}, set foo (val) {}, bar () {} };"
].join("\n"),
options: [{ named: "always", anonymous: "never" }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
type: "FunctionDeclaration",
messageId: "missingSpace",
line: 1,
column: 13
},
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 2,
column: 19
},
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 3,
column: 20
},
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 3,
column: 34
},
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 3,
column: 47
}
]
},
{
code: "var foo = function() {}",
output: "var foo = function () {}",
options: [{ named: "ignore", anonymous: "always" }],
errors: [
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 19
}
]
},
{
code: "var foo = function () {}",
output: "var foo = function() {}",
options: [{ named: "ignore", anonymous: "never" }],
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 19
}
]
},
{
code: "var bar = function foo() {}",
output: "var bar = function foo () {}",
options: [{ named: "always", anonymous: "ignore" }],
errors: [
{
type: "FunctionExpression",
messageId: "missingSpace",
line: 1,
column: 23
}
]
},
{
code: "var bar = function foo () {}",
output: "var bar = function foo() {}",
options: [{ named: "never", anonymous: "ignore" }],
errors: [
{
type: "FunctionExpression",
messageId: "unexpectedSpace",
line: 1,
column: 23
}
]
},
// Async arrow functions
{
code: "async() => 1",
output: "async () => 1",
options: [{ asyncArrow: "always" }],
parserOptions: { ecmaVersion: 8 },
errors: ["Missing space before function parentheses."]
},
{
code: "async () => 1",
output: "async() => 1",
options: [{ asyncArrow: "never" }],
parserOptions: { ecmaVersion: 8 },
errors: ["Unexpected space before function parentheses."]
},
{
code: "async() => 1",
output: "async () => 1",
parserOptions: { ecmaVersion: 8 },
errors: [{ messageId: "missingSpace", type: "ArrowFunctionExpression" }]
},
{
code: "async() => 1",
output: "async () => 1",
options: ["always"],
parserOptions: { ecmaVersion: 8 },
errors: [{ messageId: "missingSpace", type: "ArrowFunctionExpression" }]
},
{
code: "async () => 1",
output: "async() => 1",
options: ["never"],
parserOptions: { ecmaVersion: 8 },
errors: [{ messageId: "unexpectedSpace", type: "ArrowFunctionExpression" }]
}
]
});