Add tests for Packages

Author: hansott

library/agent/Packages.test.ts

@@ -0,0 +1,76 @@
+import * as t from "tap";
+import * as FakeTimers from "@sinonjs/fake-timers";
+import { Packages } from "./Packages";
+
+t.test("addPackage should add a new package", async (t) => {
+  const clock = FakeTimers.install();
+  const packages = new Packages();
+  packages.addPackage({ name: "express", version: "4.17.1" });
+  const arr = packages.asArray();
+  t.same(arr, [{ name: "express", version: "4.17.1", requiredAt: 0 }]);
+  clock.uninstall();
+});
+
+t.test(
+  "addPackage should add a new version for an existing package",
+  async (t) => {
+    const clock = FakeTimers.install();
+    const packages = new Packages();
+    packages.addPackage({ name: "lodash", version: "4.17.20" });
+    clock.tick(10);
+    packages.addPackage({ name: "lodash", version: "4.17.21" });
+    const arr = packages.asArray();
+    t.same(arr, [
+      { name: "lodash", version: "4.17.20", requiredAt: 0 },
+      { name: "lodash", version: "4.17.21", requiredAt: 10 },
+    ]);
+    clock.uninstall();
+  }
+);
+
+t.test("addPackage should not add a duplicate package version", async (t) => {
+  const clock = FakeTimers.install();
+  const packages = new Packages();
+  packages.addPackage({ name: "moment", version: "2.29.1" });
+  packages.addPackage({ name: "moment", version: "2.29.1" });
+  const arr = packages.asArray();
+  t.same(arr, [{ name: "moment", version: "2.29.1", requiredAt: 0 }]);
+  clock.uninstall();
+});
+
+t.test(
+  "asArray should return an empty array when no packages are added",
+  async (t) => {
+    const packages = new Packages();
+    const arr = packages.asArray();
+    t.same(arr, [], "should return an empty array");
+  }
+);
+
+t.test("asArray should return all packages and versions", async (t) => {
+  const clock = FakeTimers.install();
+  const packages = new Packages();
+  packages.addPackage({ name: "express", version: "4.17.1" });
+  clock.tick(5);
+  packages.addPackage({ name: "lodash", version: "4.17.20" });
+  clock.tick(15);
+  packages.addPackage({ name: "lodash", version: "4.17.21" });
+  const arr = packages.asArray();
+  t.same(arr, [
+    { name: "express", version: "4.17.1", requiredAt: 0 },
+    { name: "lodash", version: "4.17.20", requiredAt: 5 },
+    { name: "lodash", version: "4.17.21", requiredAt: 20 },
+  ]);
+  clock.uninstall();
+});
+
+t.test("clear should remove all packages", async (t) => {
+  const clock = FakeTimers.install();
+  const packages = new Packages();
+  packages.addPackage({ name: "express", version: "4.17.1" });
+  packages.addPackage({ name: "lodash", version: "4.17.20" });
+  packages.clear();
+  const arr = packages.asArray();
+  t.same(arr, [], "should return an empty array after clear");
+  clock.uninstall();
+});