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codemirror.lua.autocomplete.test.js
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codemirror.lua.autocomplete.test.js
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/* eslint-disable-next-line n/no-missing-require */
const { CompletionContext } = require( 'ext.CodeMirror.v6.lib' );
const CodeMirror = require( '../../../resources/codemirror.js' );
const { lua } = require( '../../../resources/modes/codemirror.mode.exporter.js' );
// Setup CodeMirror instance.
const textarea = document.createElement( 'textarea' );
document.body.appendChild( textarea );
const cm = new CodeMirror( textarea, lua() );
cm.initialize();
const [ source ] = cm.view.state.languageDataAt( 'autocomplete' );
/**
* Create a completion context at a specific position.
*
* @return {CompletionContext}
*/
const createCompletionContext = () => new CompletionContext(
cm.view.state,
/** @see https://github.com/codemirror/autocomplete/blob/62dead94d0f4b256f0b437b4733cfef6449e8453/src/completion.ts#L273 */
cm.view.state.selection.main.from,
true,
cm.view
);
const test = ( insert, results ) => {
cm.view.dispatch( {
changes: { from: 0, to: cm.view.state.doc.length, insert },
selection: { anchor: insert.length, head: insert.length }
} );
const completion = source( createCompletionContext() );
expect(
completion && completion.options.filter(
( option ) => option.label.toLowerCase()
.startsWith( insert.slice( completion.from ).toLowerCase() )
).map( ( { label, type, detail } ) => ( { label, type, detail } ) )
).toEqual( results );
};
describe( 'Lua autocompletion', () => {
it( 'should not autocomplete in comments', () => {
test( '-- a', null );
test( '--[[\na', null );
} );
it( 'should not autocomplete in strings', () => {
test( '"a', null );
test( "'a", null );
test( '[[a', null );
test( '[=[a', null );
} );
it( 'should autocomplete object access', () => {
test(
'package.',
[
{ label: 'loaded', type: 'interface' },
{ label: 'loaders', type: 'interface' },
{ label: 'preload', type: 'interface' },
{ label: 'seeall', type: 'function' }
]
);
test(
'mw.site.stats.us',
[
{ label: 'users', type: 'constant' },
{ label: 'usersInGroup', type: 'function' }
]
);
} );
it( 'should autocomplete after a length operator', () => {
test(
'#_',
[ { label: '_G', type: 'namespace' } ]
);
} );
it( 'should autocomplete after a binary operator', () => {
test(
'a + n',
[ { label: 'next', type: 'function' } ]
);
} );
it( 'should autocomplete field names', () => {
test(
'a[ n',
[ { label: 'next', type: 'function' } ]
);
} );
it( 'should autocomplete table constructors', () => {
test(
'{ f',
[
{ label: 'false', type: 'constant' },
{ label: 'function', type: 'keyword' },
{ label: 'function', type: 'keyword', detail: 'definition' }
]
);
} );
it( 'should autocomplete after a parenthesis', () => {
test(
'f( n',
[
{ label: 'nil', type: 'constant' },
{ label: 'next', type: 'function' },
{ label: 'not', type: 'keyword' }
]
);
} );
it( 'should autocomplete assignments', () => {
test(
'a = n',
[
{ label: 'nil', type: 'constant' },
{ label: 'next', type: 'function' },
{ label: 'not', type: 'keyword' }
]
);
test(
'a, b = 0, n',
[
{ label: 'nil', type: 'constant' },
{ label: 'next', type: 'function' },
{ label: 'not', type: 'keyword' }
]
);
} );
it( 'should autocomplete after a closing bracket', () => {
test(
'{0} o',
[ { label: 'or', type: 'keyword' } ]
);
test(
'a[0] t',
[ { label: 'then', type: 'keyword' } ]
);
} );
it( 'should autocomplete after a newline', () => {
test(
' f',
[
{ label: 'for', type: 'keyword' },
{ label: 'for', type: 'keyword', detail: 'loop' },
{ label: 'for', type: 'keyword', detail: 'in loop' },
{ label: 'function', type: 'keyword' },
{ label: 'function', type: 'keyword', detail: 'definition' },
{ label: 'false', type: 'constant' }
]
);
test(
'f(); re',
[
{ label: 'repeat', type: 'keyword' },
{ label: 'repeat', type: 'keyword', detail: 'loop' },
{ label: 'return', type: 'keyword' },
{ label: 'require', type: 'function' }
]
);
} );
it( 'should autocomplete after a space', () => {
test(
'a o',
[ { label: 'or', type: 'keyword' } ]
);
test(
'a or o',
[ { label: 'os', type: 'namespace' } ]
);
} );
} );

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