Add test for use command

Author: joehan

src/commands/use.spec.ts

@@ -0,0 +1,65 @@
+import { expect } from "chai";
+import * as sinon from "sinon";
+import { RC } from "../rc";
+import { setNewActive } from "./use";
+import * as projects from "../management/projects";
+import * as utils from "../utils";
+import { FirebaseError } from "../error";
+import { logger } from "../logger";
+
+describe("commands/use", () => {
+  let rc: RC;
+  let getProjectStub: sinon.SinonStub;
+  let makeActiveProjectStub: sinon.SinonStub;
+  let loggerInfoStub: sinon.SinonStub;
+
+  beforeEach(() => {
+    rc = new RC();
+    getProjectStub = sinon.stub(projects, "getProject");
+    makeActiveProjectStub = sinon.stub(utils, "makeActiveProject");
+    loggerInfoStub = sinon.stub(logger, "info");
+  });
+
+  afterEach(() => {
+    sinon.restore();
+  });
+
+  describe("setNewActive", () => {
+    it("should set active project by alias", async () => {
+      rc.addProjectAlias("prod", "project-id");
+      getProjectStub.resolves({ projectId: "project-id" });
+
+      await setNewActive("prod", undefined, rc, "root");
+
+      expect(makeActiveProjectStub.calledWith("root", "prod")).to.be.true;
+      expect(loggerInfoStub.calledWithMatch(/Now using alias/)).to.be.true;
+    });
+
+    it("should set active project by ID", async () => {
+      getProjectStub.resolves({ projectId: "project-id" });
+
+      await setNewActive("project-id", undefined, rc, "root");
+
+      expect(makeActiveProjectStub.calledWith("root", "project-id")).to.be.true;
+      expect(loggerInfoStub.calledWithMatch(/Now using project/)).to.be.true;
+    });
+
+    it("should create alias when --alias is provided", async () => {
+      getProjectStub.resolves({ projectId: "project-id" });
+
+      await setNewActive("project-id", "prod", rc, "root");
+
+      expect(rc.resolveAlias("prod")).to.equal("project-id");
+      expect(makeActiveProjectStub.calledWith("root", "project-id")).to.be.true;
+    });
+
+    it("should throw error if project does not exist", async () => {
+      getProjectStub.rejects(new Error("Not found"));
+
+      await expect(setNewActive("non-existent", undefined, rc, "root")).to.be.rejectedWith(
+        FirebaseError,
+        /Invalid project selection/,
+      );
+    });
+  });
+});