fix: pulling with env append to local files (#13227)

* fix: pulling with env append to local files

* test: add e2e test

* chore: remove unneeded condition

* fix: revert prepareContext change

* test: update expected changed files

* test: change which dir to look for expected envs

* test: update method to add second env to projRoot

Author: rtpascual

packages/amplify-cli/src/attach-backend.ts

@@ -125,7 +125,7 @@ const backupAmplifyFolder = (): void => {
       });
     }
     try {
-      fs.moveSync(amplifyDirPath, backupAmplifyDirPath);
+      fs.copySync(amplifyDirPath, backupAmplifyDirPath);
     } catch (e) {
       if (e.code === 'EPERM') {
         throw new AmplifyError(

packages/amplify-e2e-tests/src/__tests__/git-clone-attach.test.ts

@@ -120,9 +120,8 @@ describe('attach amplify to git-cloned project', () => {
     expect(changedFiles).toMatchInlineSnapshot(`
       [
         ".gitignore",
-        "amplify/README.md",
       ]
-    `); // there is a .gitignore newline and the amplify/README.md file is modified after pull
+    `); // there is a .gitignore newline after pull
     expect(getTeamProviderInfo(projRoot)).toEqual(preCleanTpi);
   });
 });

packages/amplify-e2e-tests/src/__tests__/pull.test.ts

@@ -16,8 +16,10 @@ import {
   amplifyPullNonInteractive,
   amplifyPullWithCtrlCOnFrameworkPrompt,
 } from '@aws-amplify/amplify-e2e-core';
+import { stateManager } from '@aws-amplify/amplify-cli-core';
 import * as fs from 'fs-extra';
 import * as path from 'path';
+import { addEnvironment } from '../environment/env';
 
 describe('amplify pull in two directories', () => {
   let projRoot: string;
@@ -57,6 +59,24 @@ describe('amplify pull in two directories', () => {
     await amplifyPullWithCtrlCOnFrameworkPrompt(projRoot2, { appId, envName });
     await amplifyPull(projRoot2, { appId, envName, emptyDir: true });
   });
+
+  it('appends pulled env to local-aws-info contents instead of overriding existing env', async () => {
+    const envName = 'testing';
+    const newEnvName = 'newenv';
+    const expectedEnvs = [envName, newEnvName];
+
+    // add both envs to project
+    await initJSProjectWithProfile(projRoot, { envName, disableAmplifyAppCreation: false });
+    await addEnvironment(projRoot, { envName: newEnvName });
+
+    // pull twice for both envs in other directory
+    const appId = getBackendAmplifyMeta(projRoot)?.providers?.awscloudformation?.AmplifyAppId;
+    await amplifyPullNonInteractive(projRoot2, { appId, envName: envName });
+    await amplifyPullNonInteractive(projRoot2, { appId, envName: newEnvName });
+
+    // assert that local-aws-info.json contains both envs
+    expect(Object.keys(stateManager.getLocalAWSInfo(projRoot2))).toEqual(expectedEnvs);
+  });
 });
 
 describe('amplify pull', () => {