LSP-client-example

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/* --------------------------------------------------------------------------------------------
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 * Copyright (c) Microsoft Corporation. All rights reserved.
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 * Licensed under the MIT License. See License.txt in the project root for license information.
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 * ------------------------------------------------------------------------------------------ */
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import * as vscode from 'vscode';
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import * as assert from 'assert';
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import { getDocUri, activate } from './helper';
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suite('Should do completion', () => {
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	const docUri = getDocUri('completion.txt');
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	test('Completes JS/TS in txt file', async () => {
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		await testCompletion(docUri, new vscode.Position(0, 0), {
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			items: [
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				{ label: 'JavaScript', kind: vscode.CompletionItemKind.Text },
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				{ label: 'TypeScript', kind: vscode.CompletionItemKind.Text }
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			]
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		});
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	});
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});
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async function testCompletion(
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	docUri: vscode.Uri,
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	position: vscode.Position,
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	expectedCompletionList: vscode.CompletionList
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) {
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	await activate(docUri);
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	// Executing the command `vscode.executeCompletionItemProvider` to simulate triggering completion
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	const actualCompletionList = (await vscode.commands.executeCommand(
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		'vscode.executeCompletionItemProvider',
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		docUri,
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		position
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	)) as vscode.CompletionList;
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	assert.ok(actualCompletionList.items.length >= 2);
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	expectedCompletionList.items.forEach((expectedItem, i) => {
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		const actualItem = actualCompletionList.items[i];
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		assert.equal(actualItem.label, expectedItem.label);
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		assert.equal(actualItem.kind, expectedItem.kind);
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	});
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}
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