test: add tests for dapp add command (#2143)

packages/tools/kadena-cli/src/dapp/commands/dappCreate.ts

@@ -15,13 +15,11 @@ export const createDappCommand: (program: Command, version: string) => void =
     [dappOptions.dappTemplate()],
     async (option, { values }) => {
       const config = await option.dappTemplate();
-      log.debug('dapp-create-command', config);
+      log.debug('dapp-add-command', config);
 
       if (values[0] === undefined) {
         throw new CommandError({
-          errors: [
-            'Project name is required, e.g. `kadena dapp create my-dapp`',
-          ],
+          errors: ['Project name is required, e.g. `kadena dapp add my-dapp`'],
           exitCode: 1,
         });
       }

packages/tools/kadena-cli/src/dapp/tests/dappCreate.test.ts

@@ -0,0 +1,79 @@
+import { spawnSync } from 'child_process';
+import type { MockInstance } from 'vitest';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { services } from '../../services/index.js';
+import { mockPrompts, runCommand } from '../../utils/test.util.js';
+
+// Mock the entire child_process module
+// Using spyOn for spawnSync will not work because it is a read-only function from child_process
+vi.mock('child_process', () => {
+  return {
+    spawnSync: vi.fn(),
+  };
+});
+
+describe('dapp add command', () => {
+  beforeEach(() => {
+    (spawnSync as unknown as MockInstance).mockReset();
+  });
+
+  it('should delete account alias file', async () => {
+    const mockOutput = 'success';
+    (spawnSync as unknown as MockInstance).mockImplementation(() => ({
+      pid: 12345,
+      output: [Buffer.from(''), Buffer.from(mockOutput), Buffer.from('')],
+      stdout: Buffer.from(mockOutput),
+      stderr: Buffer.from(''),
+      status: 0,
+      signal: null,
+      error: undefined,
+    }));
+    mockPrompts({
+      select: {
+        'What template do you want to use?': 'vuejs',
+      },
+      verbose: true,
+    });
+
+    await runCommand('dapp add my-first-app');
+
+    expect(spawnSync).toHaveBeenCalledWith(
+      'npx',
+      [
+        '@kadena/create-kadena-app',
+        'generate-project',
+        '-n',
+        'my-first-app',
+        '-t',
+        'vuejs',
+      ],
+      { stdio: 'inherit' },
+    );
+  });
+
+  it('should throw an error when user runs the command without project directory', async () => {
+    mockPrompts({
+      select: {
+        'What template do you want to use?': 'vuejs',
+      },
+      verbose: true,
+    });
+    const { stderr } = await runCommand('dapp add');
+    expect(stderr).toContain(
+      'Project name is required, e.g. `kadena dapp add my-dapp`',
+    );
+  });
+
+  it('should thrown an error when user passes the existing project directory', async () => {
+    await services.filesystem.ensureDirectoryExists('test-my-first-app');
+    const { stderr } = await runCommand(
+      'dapp add test-my-first-app --dapp-template=nextjs',
+    );
+    expect(stderr).toContain(
+      'Project directory test-my-first-app already exists',
+    );
+
+    // clean up the created directory
+    await services.filesystem.deleteDirectory('test-my-first-app');
+  });
+});