1 files changed, 66 insertions, 0 deletions
diff --git a/packages/create-astro/test/astro-add-step.test.js b/packages/create-astro/test/astro-add-step.test.js
new file mode 100644
index 000000000..b46d836cc
--- /dev/null
+++ b/packages/create-astro/test/astro-add-step.test.js
@@ -0,0 +1,66 @@
+import { setup, promiseWithTimeout, timeout, PROMPT_MESSAGES } from './utils.js';
+import { sep } from 'path';
+import fs from 'fs';
+import os from 'os';
+
+// reset package manager in process.env
+// prevents test issues when running with pnpm
+const FAKE_PACKAGE_MANAGER = 'npm';
+let initialEnvValue = null;
+
+describe('[create-astro] astro add', function () {
+	this.timeout(timeout);
+	let tempDir = '';
+	beforeEach(async () => {
+		tempDir = await fs.promises.mkdtemp(`${os.tmpdir()}${sep}`);
+	});
+	this.beforeAll(() => {
+		initialEnvValue = process.env.npm_config_user_agent;
+		process.env.npm_config_user_agent = FAKE_PACKAGE_MANAGER;
+	});
+	this.afterAll(() => {
+		process.env.npm_config_user_agent = initialEnvValue;
+	});
+
+	it('should use "astro add" when user has installed dependencies', function () {
+		const { stdout, stdin } = setup([tempDir, '--dryrun']);
+		return promiseWithTimeout((resolve) => {
+			const seen = new Set();
+			const installPrompt = PROMPT_MESSAGES.install('npm');
+			stdout.on('data', (chunk) => {
+				if (!seen.has(PROMPT_MESSAGES.template) && chunk.includes(PROMPT_MESSAGES.template)) {
+					seen.add(PROMPT_MESSAGES.template);
+					stdin.write('\x0D');
+				}
+				if (!seen.has(installPrompt) && chunk.includes(installPrompt)) {
+					seen.add(installPrompt);
+					stdin.write('\x0D');
+				}
+				if (chunk.includes(PROMPT_MESSAGES.astroAdd('astro add --yes'))) {
+					resolve();
+				}
+			});
+		});
+	});
+
+	it('should use "npx astro@latest add" when use has NOT installed dependencies', function () {
+		const { stdout, stdin } = setup([tempDir, '--dryrun']);
+		return promiseWithTimeout((resolve) => {
+			const seen = new Set();
+			const installPrompt = PROMPT_MESSAGES.install('npm');
+			stdout.on('data', (chunk) => {
+				if (!seen.has(PROMPT_MESSAGES.template) && chunk.includes(PROMPT_MESSAGES.template)) {
+					seen.add(PROMPT_MESSAGES.template);
+					stdin.write('\x0D');
+				}
+				if (!seen.has(installPrompt) && chunk.includes(installPrompt)) {
+					seen.add(installPrompt);
+					stdin.write('n\x0D');
+				}
+				if (chunk.includes(PROMPT_MESSAGES.astroAdd('npx astro@latest add --yes'))) {
+					resolve();
+				}
+			});
+		});
+	});
+});