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jsx-curly-spacing.js
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jsx-curly-spacing.js
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/**
* @fileoverview Enforce or disallow spaces inside of curly braces in JSX attributes.
* @author Yannick Croissant
* @author Erik Wendel
*/
'use strict';
// ------------------------------------------------------------------------------
// Requirements
// ------------------------------------------------------------------------------
const RuleTester = require('../../helpers/ruleTester');
const rule = require('../../../lib/rules/jsx-curly-spacing');
const parsers = require('../../helpers/parsers');
const parserOptions = {
ecmaVersion: 2018,
sourceType: 'module',
ecmaFeatures: {
jsx: true,
},
};
// ------------------------------------------------------------------------------
// Tests
// ------------------------------------------------------------------------------
const ruleTester = new RuleTester({ parserOptions });
ruleTester.run('jsx-curly-spacing', rule, {
valid: parsers.all([
{
code: '<App foo={bar} />;',
},
{
code: '<App foo={bar}>{bar}</App>;',
},
{
code: '<App foo={bar}>{ bar }</App>;',
},
{
code: `
<App foo={
bar
}>
{bar}
</App>;
`,
},
{
code: '<App foo={{ bar: true, baz: true }}>{{ bar: true, baz: true }}</App>;',
},
{
code: '<App foo={{ bar: true, baz: true }}>{ { bar: true, baz: true } }</App>;',
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
},
{
code: `
<App foo={
{ bar: true, baz: true }
}>
{{ bar: true, baz: true }}
</App>;
`,
},
{
code: '<App>{ foo /* comment 1 */ }</App>',
},
{
code: '<App>{ /* comment 1 */ foo }</App>',
},
{
code: '<App foo={bar} />;',
options: [{ attributes: true }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: true }],
},
{
code: '<App foo={{ bar: true, baz: true }} />;',
options: [{ attributes: true }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ attributes: true }],
},
{
code: '<App foo={bar} />;',
options: [{ attributes: false }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: false }],
},
{
code: '<App foo={{ bar: true, baz: true }} />;',
options: [{ attributes: false }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ attributes: false }],
},
{
code: '<App foo={ bar } />;',
options: [{ attributes: false }],
},
{
code: '<App foo={ { bar: true, baz: true } } />;',
options: [{ attributes: false }],
},
{
code: '<App>{bar}</App>;',
options: [{ children: true }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: true }],
},
{
code: '<App>{{ bar: true, baz: true }}</App>;',
options: [{ children: true }],
},
{
code: `
<App>{
{ bar: true, baz: true }
}</App>;
`,
options: [{ children: true }],
},
{
code: '<App>{bar}</App>;',
options: [{ children: false }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: false }],
},
{
code: '<App>{{ bar: true, baz: true }}</App>;',
options: [{ children: false }],
},
{
code: `
<App>{
{ bar: true, baz: true }
}</App>;
`,
options: [{ children: false }],
},
{
code: '<App>{ bar }</App>;',
options: [{ children: false }],
},
{
code: '<App>{ { bar: true, baz: true } }</App>;',
options: [{ children: false }],
},
{
code: '<App foo={bar} />;',
options: [{ when: 'never' }],
},
{
code: '<App foo={bar} />;',
options: [{ when: 'never', allowMultiline: false }],
},
{
code: '<App foo={bar} />;',
options: [{ when: 'never', allowMultiline: true }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ when: 'never', allowMultiline: true }],
},
{
code: '<App foo={{ bar: true, baz: true }} />;',
options: [{ when: 'never', spacing: { objectLiterals: 'never' } }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ when: 'never', spacing: { objectLiterals: 'never' } }],
},
{
code: '<App foo={ bar } />;',
options: [{ when: 'always' }],
},
{
code: '<App foo={ bar } />;',
options: [{ when: 'always', allowMultiline: false }],
},
{
code: '<App foo={ bar } />;',
options: [{ when: 'always', allowMultiline: true }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ when: 'always', allowMultiline: true }],
},
{
code: '<App foo={{ bar: true, baz: true }} />;',
options: [{ when: 'always', spacing: { objectLiterals: 'never' } }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ when: 'always', spacing: { objectLiterals: 'never' } }],
},
{
code: '<App foo={bar} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={ bar } />;',
options: [{ attributes: { when: 'always' } }],
},
{
code: '<App foo={ bar } />;',
options: [{ attributes: { when: 'always', allowMultiline: false } }],
},
{
code: '<App foo={{ bar:baz }} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={ {bar:baz} } />;',
options: [{ attributes: { when: 'always' } }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ attributes: { when: 'always' } }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: { when: 'always' } }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: { when: 'always', allowMultiline: true } }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: { when: 'never' } }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: { when: 'never', allowMultiline: true } }],
},
{
code: '<App foo={bar/* comment 2 */} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={ bar } />;',
options: [{ attributes: { when: 'always', spacing: {} } }],
},
{
code: `
<App foo={
bar
} />;
`,
options: [{ attributes: { when: 'always', spacing: {} } }],
},
{
code: '<App foo={{ bar: true, baz: true }} />;',
options: [{ attributes: { when: 'always', spacing: { objectLiterals: 'never' } } }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: [{ attributes: { when: 'always', spacing: { objectLiterals: 'never' } } }],
},
{
code: '<App>{bar}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{ bar }</App>;',
options: [{ children: { when: 'always' } }],
},
{
code: '<App>{ bar }</App>;',
options: [{ children: { when: 'always', allowMultiline: false } }],
},
{
code: '<App>{{ bar:baz }}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: `
<App>{
{ bar: true, baz: true }
}</App>;
`,
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{ {bar:baz} }</App>;',
options: [{ children: { when: 'always' } }],
},
{
code: `
<App>{
{ bar: true, baz: true }
}</App>;
`,
options: [{ children: { when: 'always' } }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: { when: 'always' } }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: { when: 'always', allowMultiline: true } }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: { when: 'never' } }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: { when: 'never', allowMultiline: true } }],
},
{
code: `
<App>{/* comment 3 */}</App>;
`,
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{bar/* comment 4 */}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{ bar }</App>;',
options: [{ children: { when: 'always', spacing: {} } }],
},
{
code: `
<App>{
bar
}</App>;
`,
options: [{ children: { when: 'always', spacing: {} } }],
},
{
code: '<App>{{ bar: true, baz: true }}</App>;',
options: [{ children: { when: 'always', spacing: { objectLiterals: 'never' } } }],
},
{
code: `
<App>{
{ bar: true, baz: true }
}</App>;
`,
options: [{ children: { when: 'always', spacing: { objectLiterals: 'never' } } }],
},
{
code: '<App {...bar} />;',
},
{
code: '<App {...bar} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App { ...bar } />;',
options: [{ attributes: { when: 'always' } }],
},
{
code: '<App { ...bar } />;',
options: [{ attributes: { when: 'always', allowMultiline: false } }],
},
{
code: `
<App {
...bar
} />;
`,
options: [{ attributes: { when: 'always' } }],
},
{
code: `
<App {
...bar
} />;
`,
options: [{ attributes: { when: 'always', allowMultiline: true } }],
},
{
code: `
<App {
...bar
} />;
`,
options: [{ attributes: { when: 'never' } }],
},
{
code: `
<App {
...bar
} />;
`,
options: [{ attributes: { when: 'never', allowMultiline: true } }],
},
{
code: '<App {...bar/* comment 5 */} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={bar} {...baz} />;',
},
{
code: '<App foo={bar} {...baz} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={ bar } { ...baz } />;',
options: [{ attributes: { when: 'always' } }],
},
{
code: '<App foo={ bar } { ...baz } />;',
options: [{ attributes: { when: 'always', allowMultiline: false } }],
},
{
code: '<App foo={{ bar:baz }} {...baz} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={ {bar:baz} } { ...baz } />;',
options: [{ attributes: { when: 'always' } }],
},
{
code: `
<App foo={
bar
} {
...bar
} />;
`,
options: [{ attributes: { when: 'always' } }],
},
{
code: '<App foo={bar/* comment 6 */} {...baz/* comment 7 */} />;',
options: [{ attributes: { when: 'never' } }],
},
{
code: '<App foo={3} bar={ {a: 2} } />',
options: [{ attributes: { when: 'never', spacing: { objectLiterals: 'always' } } }],
},
{
code: '<App>{bar/* comment 8 */}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{bar} {baz}</App>;',
},
{
code: '<App>{bar} {baz}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{ bar } { baz }</App>;',
options: [{ children: { when: 'always' } }],
},
{
code: '<App>{ bar } { baz }</App>;',
options: [{ children: { when: 'always', allowMultiline: false } }],
},
{
code: '<App>{{ bar:baz }} {baz}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{ {bar:baz} } { baz }</App>;',
options: [{ children: { when: 'always' } }],
},
{
code: `
<App>{
bar
} {
bar
}</App>;
`,
options: [{ children: { when: 'always' } }],
},
{
code: '<App>{bar/* comment 9 */} {baz/* comment 10 */}</App>;',
options: [{ children: { when: 'never' } }],
},
{
code: '<App>{3} { {a: 2} }</App>',
options: [{ children: { when: 'never', spacing: { objectLiterals: 'always' } } }],
},
{
code: '<App foo={ bar }>{bar}</App>',
options: [{ attributes: { when: 'always' } }],
},
{
code: `
<App foo={ 42 } { ...bar } baz={{ 4: 2 }}>
{foo} {{ bar: baz }}
</App>
`,
options: [
{
when: 'never',
attributes: { when: 'always', spacing: { objectLiterals: 'never' } },
children: true,
},
],
},
{
code: `
<App foo={42} {...bar} baz={ { 4: 2 } }>
{foo} { { bar: baz } }
</App>
`,
options: [
{
when: 'never',
spacing: { objectLiterals: 'always' },
attributes: true,
children: { when: 'never' },
},
],
},
{
code: `
<App foo={42} {...bar} baz={ { 4: 2 } }>
{foo} { { bar: baz } }
</App>
`,
options: [
{
spacing: { objectLiterals: 'always' },
attributes: { when: 'never', spacing: { objectLiterals: 'always' } },
children: { when: 'never' },
},
],
},
{
code: '<App foo={bar} />;',
options: ['never'],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: ['never', { spacing: { objectLiterals: 'never' } }],
},
{
code: '<App foo={ bar } />;',
options: ['always'],
},
{
code: '<App foo={ bar } />;',
options: ['always', { allowMultiline: false }],
},
{
code: '<App foo={{ bar:baz }} />;',
options: ['never'],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: ['never'],
},
{
code: '<App foo={ {bar:baz} } />;',
options: ['always'],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: ['always'],
},
{
code: `
<App foo={
bar
} />;
`,
options: ['always'],
},
{
code: `
<App foo={
bar
} />;
`,
options: ['never'],
},
{
code: `
<App>{/* comment 11 */}</App>;
`,
options: ['never'],
},
{
code: '<App foo={bar/* comment 12 */} />;',
options: ['never'],
},
{
code: '<App foo={ bar } />;',
options: ['always', { spacing: {} }],
},
{
code: `
<App foo={
bar
} />;
`,
options: ['always', { spacing: {} }],
},
{
code: '<App foo={{ bar: true, baz: true }} />;',
options: ['always', { spacing: { objectLiterals: 'never' } }],
},
{
code: `
<App foo={
bar
} />;
`,
options: ['always', { allowMultiline: true }],
},
{
code: `
<App foo={
{ bar: true, baz: true }
} />;
`,
options: ['always', { spacing: { objectLiterals: 'never' } }],
},
{
code: '<App {...bar} />;',
options: ['never'],
},
{
code: '<App { ...bar } />;',
options: ['always'],
},
{
code: '<App { ...bar } />;',
options: ['always', { allowMultiline: false }],
},
{
code: `
<App {
...bar
} />;
`,
options: ['always'],
},
{
code: `
<App {
...bar
} />;
`,
options: ['never'],
},
{
code: '<App {...bar/* comment 13 */} />;',
options: ['never'],
},
{
code: '<App foo={bar} {...baz} />;',
options: ['never'],
},
{
code: '<App foo={ bar } { ...baz } />;',
options: ['always'],
},
{
code: '<App foo={ bar } { ...baz } />;',
options: ['always', { allowMultiline: false }],
},
{
code: '<App foo={{ bar:baz }} {...baz} />;',
options: ['never'],
},
{
code: '<App foo={ {bar:baz} } { ...baz } />;',
options: ['always'],
},
{
code: `
<App foo={
bar
} {
...bar
}/>;
`,
options: ['always'],
},
{
code: '<App foo={bar/* comment 14 */} {...baz/* comment 15 */} />;',
options: ['never'],
},
{
code: '<App foo={3} bar={ {a: 2} } />',
options: ['never', { spacing: { objectLiterals: 'always' } }],
},
{
code: '<App foo={ bar }>{bar}</App>',
options: ['always'],
},
{
code: `
<App>{\`
text
\`}</App>
`,
options: [{ children: { when: 'never', allowMultiline: false } }],
},
{
code: '<>{bar} {baz}</>;',
features: ['fragment'],
},
{
code: '<div onLayout={() => { /* dummy callback to fix android bug with component measuring */ }} />',
},
]),
invalid: parsers.all([
{
code: '<App foo={ bar }>{bar}</App>;',
output: '<App foo={bar}>{bar}</App>;',
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ bar }>{ bar }</App>;',
output: '<App foo={bar}>{ bar }</App>;',
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ { bar: true, baz: true } }>{{ bar: true, baz: true }}</App>;',
output: '<App foo={{ bar: true, baz: true }}>{{ bar: true, baz: true }}</App>;',
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ { bar: true, baz: true } }>{ { bar: true, baz: true } }</App>;',
output: '<App foo={{ bar: true, baz: true }}>{ { bar: true, baz: true } }</App>;',
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ bar } />;',
output: '<App foo={bar} />;',
options: [{ attributes: true }],
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ { bar: true, baz: true } } />;',
output: '<App foo={{ bar: true, baz: true }} />;',
options: [{ attributes: true }],
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App>{ bar }</App>;',
output: '<App>{bar}</App>;',
options: [{ children: true }],
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<>{ bar }</>;',
output: '<>{bar}</>;',
features: ['fragment'],
options: [{ children: true }],
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App>{ { bar: true, baz: true } }</App>;',
output: '<App>{{ bar: true, baz: true }}</App>;',
options: [{ children: true }],
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ bar } />;',
output: '<App foo={bar} />;',
options: [{ when: 'never' }],
errors: [
{
messageId: 'noSpaceAfter',
data: { token: '{' },
},
{
messageId: 'noSpaceBefore',
data: { token: '}' },
},
],
},
{
code: `
<App foo={
bar
} />;
`,
output: `
<App foo={bar} />;
`,
options: [{ when: 'never', allowMultiline: false }],
errors: [
{
messageId: 'noNewlineAfter',
data: { token: '{' },
},
{
messageId: 'noNewlineBefore',
data: { token: '}' },
},
],
},
{
code: '<App foo={ { bar: true, baz: true } } />;',