test(cli): add tests for serve()

packages/cli/commands/serve.mjs

@@ -3,35 +3,44 @@
 import { consola } from "consola";
 import { colorize } from "consola/utils";
 import { defineCommand } from "citty";
-import { execSync as exec } from "node:child_process";
+import { execSync } from "node:child_process";
 import { createRequire } from "node:module";
 
+async function printInfo() {
+  try {
+    const _require = createRequire(import.meta.url);
+    const mcflyPkg = await _require("@mcflyjs/core/package.json");
+    const mcflyPkgVersion = `McFly ${colorize("bold", mcflyPkg.version)}`;
+    const nitroPkg = await _require("nitropack/package.json");
+    const nitroPkgVersion = `Nitro ${nitroPkg.version}`;
+    consola.log(
+      `${colorize("blue", mcflyPkgVersion)} ${colorize("dim", nitroPkgVersion)}`
+    );
+  } catch (e) {
+    consola.error(e);
+  }
+}
+
+function serve() {
+  try {
+    execSync(`npx nitropack dev`, { stdio: "inherit" });
+  } catch (e) {
+    consola.error(e);
+  }
+}
+
 export default defineCommand({
   meta: {
     name: "prepare",
     description: "Runs the dev server.",
   },
   async run() {
-    try {
-      const _require = createRequire(import.meta.url);
-      const mcflyPkg = await _require("@mcflyjs/core/package.json");
-      const mcflyPkgVersion = `McFly ${colorize("bold", mcflyPkg.version)}`;
-      const nitroPkg = await _require("nitropack/package.json");
-      const nitroPkgVersion = `Nitro ${nitroPkg.version}`;
-      consola.log(
-        `${colorize("blue", mcflyPkgVersion)} ${colorize(
-          "dim",
-          nitroPkgVersion
-        )}`
-      );
-    } catch (e) {
-      consola.error(e);
-    }
-
-    try {
-      exec(`npx nitropack dev`, { stdio: "inherit" });
-    } catch (e) {
-      consola.error(e);
-    }
+    await printInfo();
+    serve();
   },
 });
+
+export const exportedForTest = {
+  serve,
+  printInfo,
+};

packages/cli/test/serve.test.js

@@ -0,0 +1,53 @@
+import { describe, expect, test, vi } from "vitest";
+import { exportedForTest } from "../commands/serve.mjs";
+import consola from "consola";
+
+describe("FUNCTION: serve()", () => {
+  const testFn = exportedForTest.serve;
+  const mocks = vi.hoisted(() => {
+    return {
+      execSync: vi.fn(),
+    };
+  });
+
+  vi.mock("node:child_process", () => {
+    return {
+      execSync: mocks.execSync,
+    };
+  });
+
+  test("execute nitropack serve", async () => {
+    const command = `npx nitropack dev`;
+    const param = { stdio: "inherit" };
+
+    testFn();
+
+    expect(mocks.execSync).toHaveBeenCalledWith(command, param);
+  });
+
+  test("catch error", () => {
+    const spy = vi.spyOn(consola, "error");
+    mocks.execSync.mockImplementationOnce(() => {
+      throw new Error("hey");
+    });
+
+    testFn();
+
+    expect(spy).toHaveBeenCalledWith(new Error("hey"));
+  });
+});
+
+/**
+ * TODO: test printInfo
+ */
+// describe("FUNCTION: printInfo()", () => {
+//   const testFn = exportedForTest.printInfo;
+
+//   test("log mcfly and nitro versions", () => {
+//     const spy = vi.spyOn(consola, "log");
+
+//     testFn();
+
+//     expect(spy).toHaveBeenCalled();
+//   });
+// });