1 files changed, 52 insertions, 0 deletions
diff --git a/packages/upgrade/test/utils.js b/packages/upgrade/test/utils.js
new file mode 100644
index 000000000..d57ceacd3
--- /dev/null
+++ b/packages/upgrade/test/utils.js
@@ -0,0 +1,52 @@
+import fs from 'node:fs';
+import { setStdout } from '../dist/index.js';
+import stripAnsi from 'strip-ansi';
+
+export function setup() {
+	const ctx = { messages: [] };
+	before(() => {
+		setStdout(
+			Object.assign({}, process.stdout, {
+				write(buf) {
+					ctx.messages.push(stripAnsi(String(buf)).trim());
+					return true;
+				},
+			})
+		);
+	});
+	beforeEach(() => {
+		ctx.messages = [];
+	});
+
+	return {
+		messages() {
+			return ctx.messages;
+		},
+		length() {
+			return ctx.messages.length;
+		},
+		hasMessage(content) {
+			return !!ctx.messages.find((msg) => msg.includes(content));
+		},
+	};
+}
+
+const resetBasicFixture = async () => {
+	const packagePath = new URL('./fixtures/basic/package.json', import.meta.url);
+	const packageJsonData = JSON.parse(
+		await fs.promises.readFile(packagePath, { encoding: 'utf-8' })
+	);
+	const overriddenPackageJson = Object.assign(packageJsonData, {
+		dependencies: {
+			astro: '1.0.0',
+		},
+	});
+
+	return Promise.all([
+		fs.promises.writeFile(packagePath, JSON.stringify(overriddenPackageJson, null, 2), {
+			encoding: 'utf-8',
+		}),
+	]);
+};
+
+export const resetFixtures = () => Promise.allSettled([resetBasicFixture()]);