Added CommandHandler tests

test/lib/CommandHandler.test.ts

@@ -0,0 +1,72 @@
+import * as chai from "chai";
+import * as sinon from "sinon";
+import * as sinon_chai from "sinon-chai";
+import { commands, ExtensionContext, Memento, window } from "vscode";
+import { ICommand } from "../../src/lib/CommandBase";
+import { CommandHandler } from "../../src/lib/CommandHandler";
+import { NodeKind, ServerlessNode } from "../../src/lib/ServerlessNode";
+
+// tslint:disable:max-classes-per-file
+// tslint:disable:no-unused-expression
+
+chai.use(sinon_chai);
+const expect = chai.expect;
+
+class TestContext implements ExtensionContext {
+	public subscriptions: Array<{ dispose(): any; }> = [];
+	public workspaceState: Memento;
+	public globalState: Memento;
+	public extensionPath: string = "myExtensionPath";
+	public asAbsolutePath: sinon.SinonStub = sinon.stub();
+	public storagePath: string = "myStoragePath";
+}
+
+class TestCommand implements ICommand {
+	constructor(public context: ExtensionContext) {
+		this.invoke = sinon.stub();
+	}
+
+	public invoke(node: ServerlessNode): Thenable<void> {
+		throw new Error("Method not implemented.");
+	}
+}
+
+describe("CommandHandler", () => {
+	let sandbox: sinon.SinonSandbox;
+	let windowShowInputBoxStub: sinon.SinonStub;
+
+	before(() => {
+		sandbox = sinon.createSandbox();
+	});
+
+	beforeEach(() => {
+		windowShowInputBoxStub = sandbox.stub(window, "showInputBox");
+	});
+
+	afterEach(() => {
+		sandbox.restore();
+	});
+
+	describe("registerCommand", () => {
+		let testContext: ExtensionContext;
+		let commandsRegisterCommandSpy: sinon.SinonSpy;
+
+		beforeEach(() => {
+			testContext = new TestContext();
+			commandsRegisterCommandSpy = sandbox.spy(commands, "registerCommand");
+		});
+
+		it("should register command and keep subscription", async () => {
+			CommandHandler.registerCommand(
+				TestCommand,
+				"serverless.test",
+				testContext,
+			);
+
+			expect(testContext.subscriptions).to.have.length(1);
+			expect(commandsRegisterCommandSpy).to.have.been.calledOnce;
+			const registeredCommands = await commands.getCommands();
+			expect(registeredCommands).to.include("serverless.test");
+		});
+	});
+});