Enable quick start e2e test again and run on cloud without installing dependencies 😎 (#15546)

* Enable quick start e2e test to run without installing dependencies
* yaml formatting
* clone the repo

.azure/app-cloud-e2e.yml

@@ -73,8 +73,8 @@ jobs:
           name: "payload"
         'App: commands_and_api':
           name: "commands_and_api"
-        # 'App: quick_start':  # TODO: Failed during installation
-        #   name: "quick_start"
+        'App: quick_start':
+          name: "quick_start"
     timeoutInMinutes: "20"
     cancelTimeoutInMinutes: "2"
     # values: https://docs.microsoft.com/en-us/azure/devops/pipelines/process/phases?view=azure-devops&tabs=yaml#workspace
@@ -94,15 +94,6 @@ jobs:
         pip --version
       displayName: 'Info'
 
-    - task: Cache@2
-      condition: ne(variables['name'], 'quick_start')
-      inputs:
-        key: 'pip | "$(name)" | requirements/app/base.txt'
-        restoreKeys: |
-          pip | "$(Agent.OS)"
-        path: $(pip_cache_dir)
-      displayName: Cache pip
-
     # TODO: we are testing it as `lightning`, so add also version for `lightning_app`
     - bash: git restore . && python -m pip install -e . -r requirements/app/test.txt -r requirements/app/ui.txt --find-links https://download.pytorch.org/whl/cpu/torch_stable.html
       displayName: 'Install Lightning & dependencies'
@@ -112,6 +103,16 @@ jobs:
         python -m playwright install  # --with-deps
       displayName: 'Install Playwright system dependencies'
 
+    # The magic happens here it doesn't need to install the quick start dependencies.
+    # This test is very important to test the main user story of lightning app.
+    # It also e2e tests running on cloud without installing dependencies.
+    - bash: |
+        rm -rf examples/lightning-quick-start || true
+        git clone https://github.com/Lightning-AI/lightning-quick-start examples/lightning-quick-start
+      condition: eq(variables['name'], 'quick_start')
+      displayName: 'Clone Quick start Repo'
+
+
     # - bash: |
     #     rm -rf examples/app_template_jupyterlab || true
     #     git clone https://github.com/Lightning-AI/LAI-lightning-template-jupyterlab-App examples/app_template_jupyterlab
@@ -125,10 +126,6 @@ jobs:
       condition: eq(variables['name'], 'template_react_ui')
       displayName: 'Clone Template React UI Repo'
 
-    - bash: python -m lightning install app lightning/quick-start -y
-      condition: eq(variables['name'], 'quick_start')
-      displayName: 'Install Quick Start'
-
     - bash: python -m pip install -q -r .actions/requirements.txt
       displayName: 'Install assistant dependencies'
 

tests/tests_app_examples/test_quick_start.py

@@ -51,7 +51,7 @@ def test_quick_start_example(caplog, monkeypatch):
 
 @pytest.mark.cloud
 def test_quick_start_example_cloud() -> None:
-    with run_app_in_cloud(os.path.join(_PROJECT_ROOT, "lightning-quick-start/")) as (_, view_page, _, _):
+    with run_app_in_cloud(os.path.join(_PROJECT_ROOT, "examples", "lightning-quick-start/")) as (_, view_page, _, _):
 
         def click_gradio_demo(*_, **__):
             button = view_page.locator('button:has-text("Interactive demo")')