/
naming-convention.test.ts
1286 lines (1246 loc) · 31.3 KB
/
naming-convention.test.ts
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import { TSESLint } from '@typescript-eslint/experimental-utils';
import rule, {
MessageIds,
Options,
PredefinedFormatsString,
Selector,
selectorTypeToMessageString,
} from '../../src/rules/naming-convention';
import { RuleTester, getFixturesRootDir } from '../RuleTester';
const ruleTester = new RuleTester({
parser: '@typescript-eslint/parser',
});
// only need parserOptions for the `type` option tests
const rootDir = getFixturesRootDir();
const parserOptions = {
tsconfigRootDir: rootDir,
project: './tsconfig.json',
};
const formatTestNames: Readonly<Record<
PredefinedFormatsString,
Record<'valid' | 'invalid', string[]>
>> = {
camelCase: {
valid: ['strictCamelCase', 'lower', 'camelCaseUNSTRICT'],
invalid: ['snake_case', 'UPPER_CASE', 'UPPER', 'StrictPascalCase'],
},
strictCamelCase: {
valid: ['strictCamelCase', 'lower'],
invalid: [
'snake_case',
'UPPER_CASE',
'UPPER',
'StrictPascalCase',
'camelCaseUNSTRICT',
],
},
PascalCase: {
valid: [
'StrictPascalCase',
'Pascal',
'I18n',
'PascalCaseUNSTRICT',
'UPPER',
],
invalid: ['snake_case', 'UPPER_CASE', 'strictCamelCase'],
},
StrictPascalCase: {
valid: ['StrictPascalCase', 'Pascal', 'I18n'],
invalid: [
'snake_case',
'UPPER_CASE',
'UPPER',
'strictCamelCase',
'PascalCaseUNSTRICT',
],
},
UPPER_CASE: {
valid: ['UPPER_CASE', 'UPPER'],
invalid: [
'lower',
'snake_case',
'SNAKE_case_UNSTRICT',
'strictCamelCase',
'StrictPascalCase',
],
},
snake_case: {
valid: ['snake_case', 'lower'],
invalid: [
'UPPER_CASE',
'SNAKE_case_UNSTRICT',
'strictCamelCase',
'StrictPascalCase',
],
},
};
const REPLACE_REGEX = /%/g;
// filter to not match `[iI]gnored`
const IGNORED_FILTER = {
match: false,
regex: /.gnored/.source,
};
type Cases = {
code: string[];
options: Omit<Options[0], 'format'>;
}[];
function createValidTestCases(cases: Cases): TSESLint.ValidTestCase<Options>[] {
const newCases: TSESLint.ValidTestCase<Options>[] = [];
for (const test of cases) {
for (const [formatLoose, names] of Object.entries(formatTestNames)) {
const format = [formatLoose as PredefinedFormatsString];
for (const name of names.valid) {
const createCase = (
preparedName: string,
options: Selector,
): TSESLint.ValidTestCase<Options> => ({
options: [
{
...options,
filter: IGNORED_FILTER,
},
],
code: `// ${JSON.stringify(options)}\n${test.code
.map(code => code.replace(REPLACE_REGEX, preparedName))
.join('\n')}`,
});
newCases.push(
createCase(name, {
...test.options,
format,
}),
// leadingUnderscore
createCase(name, {
...test.options,
format,
leadingUnderscore: 'forbid',
}),
createCase(`_${name}`, {
...test.options,
format,
leadingUnderscore: 'require',
}),
createCase(`_${name}`, {
...test.options,
format,
leadingUnderscore: 'allow',
}),
createCase(name, {
...test.options,
format,
leadingUnderscore: 'allow',
}),
// trailingUnderscore
createCase(name, {
...test.options,
format,
trailingUnderscore: 'forbid',
}),
createCase(`${name}_`, {
...test.options,
format,
trailingUnderscore: 'require',
}),
createCase(`${name}_`, {
...test.options,
format,
trailingUnderscore: 'allow',
}),
createCase(name, {
...test.options,
format,
trailingUnderscore: 'allow',
}),
// prefix
createCase(`MyPrefix${name}`, {
...test.options,
format,
prefix: ['MyPrefix'],
}),
createCase(`MyPrefix2${name}`, {
...test.options,
format,
prefix: ['MyPrefix1', 'MyPrefix2'],
}),
// suffix
createCase(`${name}MySuffix`, {
...test.options,
format,
suffix: ['MySuffix'],
}),
createCase(`${name}MySuffix2`, {
...test.options,
format,
suffix: ['MySuffix1', 'MySuffix2'],
}),
);
}
}
}
return newCases;
}
function createInvalidTestCases(
cases: Cases,
): TSESLint.InvalidTestCase<MessageIds, Options>[] {
const newCases: TSESLint.InvalidTestCase<MessageIds, Options>[] = [];
for (const test of cases) {
for (const [formatLoose, names] of Object.entries(formatTestNames)) {
const format = [formatLoose as PredefinedFormatsString];
for (const name of names.invalid) {
const createCase = (
preparedName: string,
options: Selector,
messageId: MessageIds,
data: Record<string, unknown> = {},
): TSESLint.InvalidTestCase<MessageIds, Options> => {
const selectors = Array.isArray(test.options.selector)
? test.options.selector
: [test.options.selector];
const errorsTemplate = selectors.map(selector => ({
messageId,
...(selector !== 'default' &&
selector !== 'variableLike' &&
selector !== 'memberLike' &&
selector !== 'typeLike'
? {
data: {
type: selectorTypeToMessageString(selector),
name: preparedName,
...data,
},
}
: // meta-types will use the correct selector, so don't assert on data shape
{}),
}));
const errors: {
data?: { type: string; name: string };
messageId: MessageIds;
}[] = [];
test.code.forEach(() => errors.push(...errorsTemplate));
return {
options: [
{
...options,
filter: IGNORED_FILTER,
},
],
code: `// ${JSON.stringify(options)}\n${test.code
.map(code => code.replace(REPLACE_REGEX, preparedName))
.join('\n')}`,
errors: errors,
};
};
const prefixSingle = ['MyPrefix'];
const prefixMulti = ['MyPrefix1', 'MyPrefix2'];
const suffixSingle = ['MySuffix'];
const suffixMulti = ['MySuffix1', 'MySuffix2'];
newCases.push(
createCase(
name,
{
...test.options,
format,
},
'doesNotMatchFormat',
{ formats: format.join(', ') },
),
// leadingUnderscore
createCase(
`_${name}`,
{
...test.options,
format,
leadingUnderscore: 'forbid',
},
'unexpectedUnderscore',
{ position: 'leading' },
),
createCase(
name,
{
...test.options,
format,
leadingUnderscore: 'require',
},
'missingUnderscore',
{ position: 'leading' },
),
// trailingUnderscore
createCase(
`${name}_`,
{
...test.options,
format,
trailingUnderscore: 'forbid',
},
'unexpectedUnderscore',
{ position: 'trailing' },
),
createCase(
name,
{
...test.options,
format,
trailingUnderscore: 'require',
},
'missingUnderscore',
{ position: 'trailing' },
),
// prefix
createCase(
name,
{
...test.options,
format,
prefix: prefixSingle,
},
'missingAffix',
{ position: 'prefix', affixes: prefixSingle.join(', ') },
),
createCase(
name,
{
...test.options,
format,
prefix: prefixMulti,
},
'missingAffix',
{
position: 'prefix',
affixes: prefixMulti.join(', '),
},
),
// suffix
createCase(
name,
{
...test.options,
format,
suffix: suffixSingle,
},
'missingAffix',
{ position: 'suffix', affixes: suffixSingle.join(', ') },
),
createCase(
name,
{
...test.options,
format,
suffix: suffixMulti,
},
'missingAffix',
{
position: 'suffix',
affixes: suffixMulti.join(', '),
},
),
);
}
}
}
return newCases;
}
const cases: Cases = [
// #region default
{
code: [
'const % = 1;',
'function % () {}',
'(function (%) {});',
'class Ignored { constructor(private %) {} }',
'const ignored = { % };',
'interface Ignored { %: string }',
'type Ignored = { %: string }',
'class Ignored { private % = 1 }',
'class Ignored { constructor(private %) {} }',
'class Ignored { private %() {} }',
'const ignored = { %() {} };',
'class Ignored { private get %() {} }',
'enum Ignored { % }',
'abstract class % {}',
'interface % { }',
'type % = { };',
'enum % {}',
'interface Ignored<%> extends Ignored<string> {}',
],
options: {
selector: 'default',
filter: '[iI]gnored',
},
},
// #endregion default
// #region variable
{
code: [
'const % = 1;',
'let % = 1;',
'var % = 1;',
'const {%} = {ignored: 1};',
'const {% = 2} = {ignored: 1};',
'const {...%} = {ignored: 1};',
'const [%] = [1];',
'const [% = 1] = [1];',
'const [...%] = [1];',
],
options: {
selector: 'variable',
},
},
// #endregion variable
// #region function
{
code: ['function % () {}', '(function % () {});', 'declare function % ();'],
options: {
selector: 'function',
},
},
// #endregion function
// #region parameter
{
code: [
'function ignored(%) {}',
'(function (%) {});',
'declare function ignored(%);',
'function ignored({%}) {}',
'function ignored(...%) {}',
'function ignored({% = 1}) {}',
'function ignored({...%}) {}',
'function ignored([%]) {}',
'function ignored([% = 1]) {}',
'function ignored([...%]) {}',
],
options: {
selector: 'parameter',
},
},
// #endregion parameter
// #region property
{
code: [
'const ignored = { % };',
'const ignored = { "%": 1 };',
'interface Ignored { % }',
'interface Ignored { "%": string }',
'type Ignored = { % }',
'type Ignored = { "%": string }',
'class Ignored { private % }',
'class Ignored { private "%" = 1 }',
'class Ignored { private readonly % = 1 }',
'class Ignored { private static % }',
'class Ignored { private static readonly % = 1 }',
'class Ignored { abstract % = 1 }',
'class Ignored { declare % }',
],
options: {
selector: 'property',
},
},
{
code: [
'class Ignored { abstract private static readonly % = 1; ignoredDueToModifiers = 1; }',
],
options: {
selector: 'property',
modifiers: ['static', 'readonly'],
},
},
// #endregion property
// #region parameterProperty
{
code: [
'class Ignored { constructor(private %) {} }',
'class Ignored { constructor(readonly %) {} }',
'class Ignored { constructor(private readonly %) {} }',
],
options: {
selector: 'parameterProperty',
},
},
{
code: ['class Ignored { constructor(private readonly %) {} }'],
options: {
selector: 'parameterProperty',
modifiers: ['readonly'],
},
},
// #endregion parameterProperty
// #region method
{
code: [
'const ignored = { %() {} };',
'const ignored = { "%"() {} };',
'const ignored = { %: () => {} };',
'interface Ignored { %(): string }',
'interface Ignored { "%"(): string }',
'type Ignored = { %(): string }',
'type Ignored = { "%"(): string }',
'class Ignored { private %() {} }',
'class Ignored { private "%"() {} }',
'class Ignored { private readonly %() {} }',
'class Ignored { private static %() {} }',
'class Ignored { private static readonly %() {} }',
'class Ignored { private % = () => {} }',
'class Ignored { abstract %() }',
'class Ignored { declare %() }',
],
options: {
selector: 'method',
},
},
{
code: [
'class Ignored { abstract private static %() {}; ignoredDueToModifiers() {}; }',
],
options: {
selector: 'method',
modifiers: ['abstract', 'static'],
},
},
// #endregion method
// #region accessor
{
code: [
'const ignored = { get %() {} };',
'const ignored = { set "%"(ignored) {} };',
'class Ignored { private get %() {} }',
'class Ignored { private set "%"(ignored) {} }',
'class Ignored { private static get %() {} }',
],
options: {
selector: 'accessor',
},
},
{
code: [
'class Ignored { private static get %() {}; get ignoredDueToModifiers() {}; }',
],
options: {
selector: 'accessor',
modifiers: ['private', 'static'],
},
},
// #endregion accessor
// #region enumMember
{
code: ['enum Ignored { % }', 'enum Ignored { "%" }'],
options: {
selector: 'enumMember',
},
},
// #endregion enumMember
// #region class
{
code: ['class % {}', 'abstract class % {}', 'const ignored = class % {}'],
options: {
selector: 'class',
},
},
{
code: ['abstract class % {}; class ignoredDueToModifier {}'],
options: {
selector: 'class',
modifiers: ['abstract'],
},
},
// #endregion class
// #region interface
{
code: ['interface % {}'],
options: {
selector: 'interface',
},
},
// #endregion interface
// #region typeAlias
{
code: ['type % = {};', 'type % = 1;'],
options: {
selector: 'typeAlias',
},
},
// #endregion typeAlias
// #region enum
{
code: ['enum % {}'],
options: {
selector: 'enum',
},
},
// #endregion enum
// #region typeParameter
{
code: [
'class Ignored<%> {}',
'function ignored<%>() {}',
'type Ignored<%> = { ignored: % };',
'interface Ignored<%> extends Ignored<string> {}',
],
options: {
selector: 'typeParameter',
},
},
// #endregion typeParameter
];
ruleTester.run('naming-convention', rule, {
valid: [
...createValidTestCases(cases),
{
code: `
const child_process = require('child_process');
`,
parserOptions,
options: [
{
selector: 'default',
format: ['camelCase'],
filter: {
regex: 'child_process',
match: false,
},
},
],
},
{
code: `
declare const ANY_UPPER_CASE: any;
declare const ANY_UPPER_CASE: any | null;
declare const ANY_UPPER_CASE: any | null | undefined;
declare const string_camelCase: string;
declare const string_camelCase: string | null;
declare const string_camelCase: string | null | undefined;
declare const string_camelCase: 'a' | null | undefined;
declare const string_camelCase: string | 'a' | null | undefined;
declare const number_camelCase: number;
declare const number_camelCase: number | null;
declare const number_camelCase: number | null | undefined;
declare const number_camelCase: 1 | null | undefined;
declare const number_camelCase: number | 2 | null | undefined;
declare const boolean_camelCase: boolean;
declare const boolean_camelCase: boolean | null;
declare const boolean_camelCase: boolean | null | undefined;
declare const boolean_camelCase: true | null | undefined;
declare const boolean_camelCase: false | null | undefined;
declare const boolean_camelCase: true | false | null | undefined;
`,
parserOptions,
options: [
{
selector: 'variable',
modifiers: ['const'],
format: ['UPPER_CASE'],
prefix: ['ANY_'],
},
{
selector: 'variable',
types: ['string'],
format: ['camelCase'],
prefix: ['string_'],
},
{
selector: 'variable',
types: ['number'],
format: ['camelCase'],
prefix: ['number_'],
},
{
selector: 'variable',
types: ['boolean'],
format: ['camelCase'],
prefix: ['boolean_'],
},
],
},
{
code: `
let foo = 'a';
const _foo = 1;
interface Foo {}
class Bar {}
function foo_function_bar() {}
`,
options: [
{
selector: 'default',
format: ['camelCase'],
custom: {
regex: /^unused_\w/.source,
match: false,
},
leadingUnderscore: 'allow',
},
{
selector: 'typeLike',
format: ['PascalCase'],
custom: {
regex: /^I[A-Z]/.source,
match: false,
},
},
{
selector: 'function',
format: ['snake_case'],
custom: {
regex: /_function_/.source,
match: true,
},
leadingUnderscore: 'allow',
},
],
},
{
code: `
let foo = 'a';
const _foo = 1;
interface foo {}
class bar {}
function fooFunctionBar() {}
function _fooFunctionBar() {}
`,
options: [
{
selector: ['default', 'typeLike', 'function'],
format: ['camelCase'],
custom: {
regex: /^unused_\w/.source,
match: false,
},
leadingUnderscore: 'allow',
},
],
},
{
code: `
const match = 'test'.match(/test/);
const [, key, value] = match;
`,
options: [
{
selector: 'default',
format: ['camelCase'],
},
],
},
// no format selector
{
code: 'const snake_case = 1;',
options: [
{
selector: 'default',
format: ['camelCase'],
},
{
selector: 'variable',
format: null,
},
],
},
{
code: 'const snake_case = 1;',
options: [
{
selector: 'default',
format: ['camelCase'],
},
{
selector: 'variable',
format: [],
},
],
},
// https://github.com/typescript-eslint/typescript-eslint/issues/1478
{
code: `
const child_process = require('child_process');
`,
options: [
{ selector: 'variable', format: ['camelCase', 'UPPER_CASE'] },
{
selector: 'variable',
format: ['snake_case'],
filter: 'child_process',
},
],
},
{
code: `
const foo = {
'Property-Name': 'asdf',
};
`,
options: [
{
format: ['strictCamelCase'],
selector: 'default',
filter: {
regex: /-/.source,
match: false,
},
},
],
},
{
code: `
const foo = {
'Property-Name': 'asdf',
};
`,
options: [
{
format: ['strictCamelCase'],
selector: 'default',
filter: {
regex: /^(Property-Name)$/.source,
match: false,
},
},
],
},
{
code: `
let isFoo = 1;
class foo {
shouldBoo: number;
}
`,
parserOptions,
options: [
{
selector: ['variable', 'parameter', 'property', 'accessor'],
types: ['number'],
format: ['PascalCase'],
prefix: ['is', 'should', 'has', 'can', 'did', 'will'],
},
],
},
{
code: `
class foo {
private readonly FooBoo: boolean;
}
`,
parserOptions,
options: [
{
selector: ['property', 'accessor'],
types: ['boolean'],
modifiers: ['private', 'readonly'],
format: ['PascalCase'],
},
],
},
{
code: `
class foo {
private fooBoo: number;
}
`,
options: [
{
selector: ['property', 'accessor'],
modifiers: ['private'],
format: ['camelCase'],
},
],
},
{
code: `
const isfooBar = 1;
function fun(goodfunFoo: number) {}
class foo {
private VanFooBar: number;
}
`,
parserOptions,
options: [
{
selector: ['property', 'accessor'],
modifiers: ['private'],
format: ['StrictPascalCase'],
prefix: ['Van'],
},
{
selector: ['variable', 'parameter'],
types: ['number'],
format: ['camelCase'],
prefix: ['is', 'good'],
},
],
},
],
invalid: [
{
// make sure we handle no options and apply defaults
code: 'const x_x = 1;',
errors: [{ messageId: 'doesNotMatchFormat' }],
},
{
// make sure we handle empty options and apply defaults
code: 'const x_x = 1;',
options: [],
errors: [{ messageId: 'doesNotMatchFormat' }],
},
...createInvalidTestCases(cases),
{
code: `
const child_process = require('child_process');
`,
parserOptions,
options: [
{
selector: 'default',
format: ['camelCase'],
filter: {
regex: 'child_process',
match: true,
},
},
],
errors: [{ messageId: 'doesNotMatchFormat' }],
},
{
code: `
declare const any_camelCase01: any;
declare const any_camelCase02: any | null;
declare const any_camelCase03: any | null | undefined;
declare const string_camelCase01: string;
declare const string_camelCase02: string | null;
declare const string_camelCase03: string | null | undefined;
declare const string_camelCase04: 'a' | null | undefined;
declare const string_camelCase05: string | 'a' | null | undefined;
declare const number_camelCase06: number;
declare const number_camelCase07: number | null;
declare const number_camelCase08: number | null | undefined;
declare const number_camelCase09: 1 | null | undefined;
declare const number_camelCase10: number | 2 | null | undefined;
declare const boolean_camelCase11: boolean;
declare const boolean_camelCase12: boolean | null;
declare const boolean_camelCase13: boolean | null | undefined;
declare const boolean_camelCase14: true | null | undefined;
declare const boolean_camelCase15: false | null | undefined;
declare const boolean_camelCase16: true | false | null | undefined;
`,
options: [
{
selector: 'variable',
modifiers: ['const'],
format: ['UPPER_CASE'],
prefix: ['any_'],
},
{
selector: 'variable',
types: ['string'],
format: ['snake_case'],
prefix: ['string_'],
},
{
selector: 'variable',
types: ['number'],
format: ['snake_case'],
prefix: ['number_'],
},
{
selector: 'variable',
types: ['boolean'],
format: ['snake_case'],
prefix: ['boolean_'],
},
],
parserOptions,
errors: Array(19).fill({ messageId: 'doesNotMatchFormatTrimmed' }),
},
{
code: `
declare const function_camelCase1: () => void;
declare const function_camelCase2: (() => void) | null;
declare const function_camelCase3: (() => void) | null | undefined;
declare const function_camelCase4:
| (() => void)
| (() => string)
| null
| undefined;