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/
camelcase.js
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/
camelcase.js
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/**
* @fileoverview Tests for camelcase rule.
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/camelcase"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester();
ruleTester.run("camelcase", rule, {
valid: [
"firstName = \"Nicholas\"",
"FIRST_NAME = \"Nicholas\"",
"__myPrivateVariable = \"Patrick\"",
"myPrivateVariable_ = \"Patrick\"",
"function doSomething(){}",
"do_something()",
"new do_something",
"new do_something()",
"foo.do_something()",
"var foo = bar.baz_boom;",
"var foo = bar.baz_boom.something;",
"foo.boom_pow.qux = bar.baz_boom.something;",
"if (bar.baz_boom) {}",
"var obj = { key: foo.bar_baz };",
"var arr = [foo.bar_baz];",
"[foo.bar_baz]",
"var arr = [foo.bar_baz.qux];",
"[foo.bar_baz.nesting]",
"if (foo.bar_baz === boom.bam_pow) { [foo.baz_boom] }",
{
code: "var o = {key: 1}",
options: [{ properties: "always" }]
},
{
code: "var o = {_leading: 1}",
options: [{ properties: "always" }]
},
{
code: "var o = {trailing_: 1}",
options: [{ properties: "always" }]
},
{
code: "var o = {bar_baz: 1}",
options: [{ properties: "never" }]
},
{
code: "var o = {_leading: 1}",
options: [{ properties: "never" }]
},
{
code: "var o = {trailing_: 1}",
options: [{ properties: "never" }]
},
{
code: "obj.a_b = 2;",
options: [{ properties: "never" }]
},
{
code: "obj._a = 2;",
options: [{ properties: "always" }]
},
{
code: "obj.a_ = 2;",
options: [{ properties: "always" }]
},
{
code: "obj._a = 2;",
options: [{ properties: "never" }]
},
{
code: "obj.a_ = 2;",
options: [{ properties: "never" }]
},
{
code: "var obj = {\n a_a: 1 \n};\n obj.a_b = 2;",
options: [{ properties: "never" }]
},
{
code: "obj.foo_bar = function(){};",
options: [{ properties: "never" }]
},
{
code: "const { ['foo']: _foo } = obj;",
parserOptions: { ecmaVersion: 6 }
},
{
code: "const { [_foo_]: foo } = obj;",
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { category_id } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { category_id: category_id } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { category_id = 1 } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { [{category_id} = query]: categoryId } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { category_id: category } = query;",
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { _leading } = query;",
parserOptions: { ecmaVersion: 6 }
},
{
code: "var { trailing_ } = query;",
parserOptions: { ecmaVersion: 6 }
},
{
code: "import { camelCased } from \"external module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { _leading } from \"external module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { trailing_ } from \"external module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { no_camelcased as camelCased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { no_camelcased as _leading } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { no_camelcased as trailing_ } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { no_camelcased as camelCased, anotherCamelCased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { snake_cased } from 'mod'",
options: [{ ignoreImports: true }],
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "import { camelCased } from 'mod'",
options: [{ ignoreImports: false }],
parserOptions: { ecmaVersion: 6, sourceType: "module" }
},
{
code: "var _camelCased = aGlobalVariable",
options: [{ ignoreGlobals: false }],
globals: { aGlobalVariable: false }
},
{
code: "var camelCased = _aGlobalVariable",
options: [{ ignoreGlobals: false }],
globals: { _aGlobalVariable: false }
},
{
code: "var camelCased = a_global_variable",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: false } // eslint-disable-line camelcase
},
{
code: "a_global_variable.foo()",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: false } // eslint-disable-line camelcase
},
{
code: "a_global_variable[undefined]",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "var foo = a_global_variable.bar",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "a_global_variable.foo = bar",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "( { foo: a_global_variable.bar } = baz )",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "a_global_variable = foo",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: "writable" } // eslint-disable-line camelcase
},
{
code: "a_global_variable = foo",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "({ a_global_variable } = foo)",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "writable" } // eslint-disable-line camelcase
},
{
code: "({ snake_cased: a_global_variable } = foo)",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "writable" } // eslint-disable-line camelcase
},
{
code: "({ snake_cased: a_global_variable = foo } = bar)",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "writable" } // eslint-disable-line camelcase
},
{
code: "[a_global_variable] = bar",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "writable" } // eslint-disable-line camelcase
},
{
code: "[a_global_variable = foo] = bar",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "writable" } // eslint-disable-line camelcase
},
{
code: "foo[a_global_variable] = bar",
options: [{ ignoreGlobals: true }],
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "var foo = { [a_global_variable]: bar }",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "var { [a_global_variable]: foo } = bar",
options: [{ ignoreGlobals: true }],
parserOptions: { ecmaVersion: 6 },
globals: { a_global_variable: "readonly" } // eslint-disable-line camelcase
},
{
code: "function foo({ no_camelcased: camelCased }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ no_camelcased: _leading }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ no_camelcased: trailing_ }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ camelCased = 'default value' }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ _leading = 'default value' }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ trailing_ = 'default value' }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ camelCased }) {};",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ _leading }) {}",
parserOptions: { ecmaVersion: 6 }
},
{
code: "function foo({ trailing_ }) {}",
parserOptions: { ecmaVersion: 6 }
},
{
code: "ignored_foo = 0;",
options: [{ allow: ["ignored_foo"] }]
},
{
code: "ignored_foo = 0; ignored_bar = 1;",
options: [{ allow: ["ignored_foo", "ignored_bar"] }]
},
{
code: "user_id = 0;",
options: [{ allow: ["_id$"] }]
},
{
code: "__option_foo__ = 0;",
options: [{ allow: ["__option_foo__"] }]
},
{
code: "foo = { [computedBar]: 0 };",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({ a: obj.fo_o } = bar);",
options: [{ allow: ["fo_o"] }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({ a: obj.foo } = bar);",
options: [{ allow: ["fo_o"] }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({ a: obj.fo_o } = bar);",
options: [{ properties: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({ a: obj.fo_o.b_ar } = bar);",
options: [{ properties: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({ a: { b: obj.fo_o } } = bar);",
options: [{ properties: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "([obj.fo_o] = bar);",
options: [{ properties: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({ c: [ob.fo_o]} = bar);",
options: [{ properties: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "([obj.fo_o.b_ar] = bar);",
options: [{ properties: "never" }],
parserOptions: { ecmaVersion: 6 }
},
{
code: "({obj} = baz.fo_o);",
parserOptions: { ecmaVersion: 6 }
},
{
code: "([obj] = baz.fo_o);",
parserOptions: { ecmaVersion: 6 }
},
{
code: "([obj.foo = obj.fo_o] = bar);",
options: [{ properties: "always" }],
parserOptions: { ecmaVersion: 6 }
}
],
invalid: [
{
code: "first_name = \"Nicholas\"",
errors: [
{
messageId: "notCamelCase",
data: { name: "first_name" },
type: "Identifier"
}
]
},
{
code: "__private_first_name = \"Patrick\"",
errors: [
{
messageId: "notCamelCase",
data: { name: "__private_first_name" },
type: "Identifier"
}
]
},
{
code: "function foo_bar(){}",
errors: [
{
messageId: "notCamelCase",
data: { name: "foo_bar" },
type: "Identifier"
}
]
},
{
code: "obj.foo_bar = function(){};",
errors: [
{
messageId: "notCamelCase",
data: { name: "foo_bar" },
type: "Identifier"
}
]
},
{
code: "bar_baz.foo = function(){};",
errors: [
{
messageId: "notCamelCase",
data: { name: "bar_baz" },
type: "Identifier"
}
]
},
{
code: "[foo_bar.baz]",
errors: [
{
messageId: "notCamelCase",
data: { name: "foo_bar" },
type: "Identifier"
}
]
},
{
code: "if (foo.bar_baz === boom.bam_pow) { [foo_bar.baz] }",
errors: [
{
messageId: "notCamelCase",
data: { name: "foo_bar" },
type: "Identifier"
}
]
},
{
code: "foo.bar_baz = boom.bam_pow",
errors: [
{
messageId: "notCamelCase",
data: { name: "bar_baz" },
type: "Identifier"
}
]
},
{
code: "var foo = { bar_baz: boom.bam_pow }",
errors: [
{
messageId: "notCamelCase",
data: { name: "bar_baz" },
type: "Identifier"
}
]
},
{
code: "var foo = { bar_baz: boom.bam_pow }",
options: [{ ignoreDestructuring: true }],
errors: [
{
messageId: "notCamelCase",
data: { name: "bar_baz" },
type: "Identifier"
}
]
},
{
code: "foo.qux.boom_pow = { bar: boom.bam_pow }",
errors: [
{
messageId: "notCamelCase",
data: { name: "boom_pow" },
type: "Identifier"
}
]
},
{
code: "var o = {bar_baz: 1}",
options: [{ properties: "always" }],
errors: [
{
messageId: "notCamelCase",
data: { name: "bar_baz" },
type: "Identifier"
}
]
},
{
code: "obj.a_b = 2;",
options: [{ properties: "always" }],
errors: [
{
messageId: "notCamelCase",
data: { name: "a_b" },
type: "Identifier"
}
]
},
{
code: "var { category_id: category_alias } = query;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_alias" },
type: "Identifier"
}
]
},
{
code: "var { category_id: category_alias } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_alias" },
type: "Identifier"
}
]
},
{
code: "var { [category_id]: categoryId } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_id" },
type: "Identifier"
}
]
},
{
code: "var { [category_id]: categoryId } = query;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_id" },
type: "Identifier"
}
]
},
{
code: "var { category_id: categoryId, ...other_props } = query;",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 2018 },
errors: [
{
messageId: "notCamelCase",
data: { name: "other_props" },
type: "Identifier"
}
]
},
{
code: "var { category_id } = query;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_id" },
type: "Identifier"
}
]
},
{
code: "var { category_id: category_id } = query;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_id" },
type: "Identifier"
}
]
},
{
code: "var { category_id = 1 } = query;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "category_id" },
type: "Identifier"
}
]
},
{
code: "import no_camelcased from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import * as no_camelcased from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import { no_camelcased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import { no_camelcased as no_camel_cased } from \"external module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camel_cased" },
type: "Identifier"
}
]
},
{
code: "import { camelCased as no_camel_cased } from \"external module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camel_cased" },
type: "Identifier"
}
]
},
{
code: "import { camelCased, no_camelcased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import { no_camelcased as camelCased, another_no_camelcased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "another_no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import camelCased, { no_camelcased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import no_camelcased, { another_no_camelcased as camelCased } from \"external-module\";",
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "import snake_cased from 'mod'",
options: [{ ignoreImports: true }],
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "snake_cased" },
type: "Identifier"
}
]
},
{
code: "import * as snake_cased from 'mod'",
options: [{ ignoreImports: true }],
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "snake_cased" },
type: "Identifier"
}
]
},
{
code: "import snake_cased from 'mod'",
options: [{ ignoreImports: false }],
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "snake_cased" },
type: "Identifier"
}
]
},
{
code: "import * as snake_cased from 'mod'",
options: [{ ignoreImports: false }],
parserOptions: { ecmaVersion: 6, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "snake_cased" },
type: "Identifier"
}
]
},
{
code: "var camelCased = snake_cased",
options: [{ ignoreGlobals: false }],
globals: { snake_cased: false }, // eslint-disable-line camelcase
errors: [
{
messageId: "notCamelCase",
data: { name: "snake_cased" },
type: "Identifier"
}
]
},
{
code: "a_global_variable.foo()",
options: [{ ignoreGlobals: false }],
globals: { a_global_variable: false }, // eslint-disable-line camelcase
errors: [
{
messageId: "notCamelCase",
data: { name: "a_global_variable" },
type: "Identifier"
}
]
},
{
code: "a_global_variable[undefined]",
options: [{ ignoreGlobals: false }],
globals: { a_global_variable: false }, // eslint-disable-line camelcase
errors: [
{
messageId: "notCamelCase",
data: { name: "a_global_variable" },
type: "Identifier"
}
]
},
{
code: "export * as snake_cased from 'mod'",
parserOptions: { ecmaVersion: 2020, sourceType: "module" },
errors: [
{
messageId: "notCamelCase",
data: { name: "snake_cased" },
type: "Identifier"
}
]
},
{
code: "function foo({ no_camelcased }) {};",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "function foo({ no_camelcased = 'default value' }) {};",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "const no_camelcased = 0; function foo({ camelcased_value = no_camelcased}) {}",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
},
{
messageId: "notCamelCase",
data: { name: "camelcased_value" },
type: "Identifier"
}
]
},
{
code: "const { bar: no_camelcased } = foo;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "function foo({ value_1: my_default }) {}",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "my_default" },
type: "Identifier"
}
]
},
{
code: "function foo({ isCamelcased: no_camelcased }) {};",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "var { foo: bar_baz = 1 } = quz;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "bar_baz" },
type: "Identifier"
}
]
},
{
code: "const { no_camelcased = false } = bar;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "const { no_camelcased = foo_bar } = bar;",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "no_camelcased" },
type: "Identifier"
}
]
},
{
code: "not_ignored_foo = 0;",
options: [{ allow: ["ignored_bar"] }],
errors: [
{
messageId: "notCamelCase",
data: { name: "not_ignored_foo" },
type: "Identifier"
}
]
},
{
code: "not_ignored_foo = 0;",
options: [{ allow: ["_id$"] }],
errors: [
{
messageId: "notCamelCase",
data: { name: "not_ignored_foo" },
type: "Identifier"
}
]
},
{
code: "foo = { [computed_bar]: 0 };",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "computed_bar" },
type: "Identifier"
}
]
},
{
code: "({ a: obj.fo_o } = bar);",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "fo_o" },
type: "Identifier"
}
]
},
{
code: "({ a: obj.fo_o } = bar);",
options: [{ ignoreDestructuring: true }],
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "fo_o" },
type: "Identifier"
}
]
},
{
code: "({ a: obj.fo_o.b_ar } = baz);",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "b_ar" },
type: "Identifier"
}
]
},
{
code: "({ a: { b: { c: obj.fo_o } } } = bar);",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "fo_o" },
type: "Identifier"
}
]
},
{
code: "({ a: { b: { c: obj.fo_o.b_ar } } } = baz);",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",
data: { name: "b_ar" },
type: "Identifier"
}
]
},
{
code: "([obj.fo_o] = bar);",
parserOptions: { ecmaVersion: 6 },
errors: [
{
messageId: "notCamelCase",