OptionProvider.test.ts

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import { should, expect } from 'chai';
import { getVSCodeWithConfig, updateConfig } from "../testAssets/Fakes";
import { vscode } from "../../../src/vscodeAdapter";
import OptionProvider from '../../../src/observers/OptionProvider';
import { Subject } from 'rxjs/Subject';
import { Options } from '../../../src/omnisharp/options';

suite('OptionProvider', () => {
    suiteSetup(() => should());

    let vscode: vscode;
    let optionProvider: OptionProvider;
    let optionObservable: Subject<Options>;

    setup(() => {
        vscode = getVSCodeWithConfig();
        optionObservable = new Subject<Options>();
        optionProvider = new OptionProvider(optionObservable);
    });

    test("Throws exception when no options are pushed", () => {
        expect(optionProvider.GetLatestOptions).to.throw();
    });

    test("Gives the latest options when options are changed", () => {
        let changingConfig = "omnisharp";
        updateConfig(vscode, changingConfig, 'path', "somePath");
        optionObservable.next(Options.Read(vscode));
        updateConfig(vscode, changingConfig, 'path', "anotherPath");
        optionObservable.next(Options.Read(vscode));
        let options = optionProvider.GetLatestOptions();
        expect(options.path).to.be.equal("anotherPath");
    });
});