acceptance: replace TestGenerateFromExistingJobAndDeploy (#5190)

Moves `TestGenerateFromExistingJobAndDeploy` from `integration/` to
`acceptance/`. Acceptance tests are the only path that wires up
terraform installs now, so the integration variant can't run end-to-end.

The new test runs the same flow (upload notebook → create job → `bundle
generate job` → `bundle deploy` → `bundle destroy`) on both modes:
- `localupdate`: ~5s
- `cloudupdate` (azure-prod-ucws, terraform + direct): ~3-4m

Also fixes a Windows path-separator bug in
`bundle/generate/downloader.go` that the new test caught: `filepath.Rel`
returned `..\src\test_notebook.py` on Windows, so the generated YAML had
OS-native separators. Mirrors the existing `filepath.ToSlash` pattern in
`pipeline.go`.

This pull request was AI-assisted by Isaac.

We did not have coverage for generate + deploy in our existing tests,
that's why I translated it instead.

---------

Co-authored-by: Andrew Nester <andrew.nester@databricks.com>

Author: shreyas-goenka

acceptance/bundle/generate/python_job_and_deploy/databricks.yml

@@ -0,0 +1,2 @@
+bundle:
+  name: python_job_and_deploy

acceptance/bundle/generate/python_job_and_deploy/out.test.toml

@@ -0,0 +1,29 @@
+
+=== Upload notebook to a workspace path
+>>> [CLI] workspace import /Workspace/Users/[USERNAME]/test_notebook.py --file test_notebook.py --format AUTO --overwrite
+
+=== Create a job that references the notebookCreated job
+
+=== Generate bundle config from the job
+>>> [CLI] bundle generate job --existing-job-id [JOB_ID] --key out --config-dir resources --source-dir src --force
+File successfully saved to src/test_notebook.py
+Job configuration successfully saved to resources/out.job.yml
+
+=== Verify generated yaml has expected fields
+=== Deploy the generated bundle
+>>> [CLI] bundle deploy
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/python_job_and_deploy/default/files...
+Deploying resources...
+Deployment complete!
+
+=== Destroy the deployed bundle
+>>> [CLI] bundle destroy --auto-approve
+All files and directories at the following location will be deleted: /Workspace/Users/[USERNAME]/.bundle/python_job_and_deploy/default
+
+Deleting files...
+Destroy complete!
+
+=== Cleanup: delete the original job and notebook
+>>> errcode [CLI] jobs delete [JOB_ID]
+
+>>> errcode [CLI] workspace delete /Workspace/Users/[USERNAME]/test_notebook

acceptance/bundle/generate/python_job_and_deploy/output.txt

@@ -0,0 +1,40 @@
+title "Upload notebook to a workspace path"
+trace $CLI workspace import "/Workspace/Users/${CURRENT_USER_NAME}/test_notebook.py" --file test_notebook.py --format AUTO --overwrite
+
+title "Create a job that references the notebook"
+JOB_ID=$($CLI jobs create --json '{
+  "name": "test-job",
+  "max_concurrent_runs": 1,
+  "queue": {"enabled": true},
+  "tasks": [
+    {
+      "task_key": "test_task",
+      "notebook_task": {
+        "notebook_path": "/Workspace/Users/'${CURRENT_USER_NAME}'/test_notebook"
+      }
+    }
+  ]
+}' | jq -r '.job_id')
+echo "Created job"
+# Disable MSYS_NO_PATHCONV when invoking python scripts: with it set, Git Bash on Windows
+# fails to translate the script path so the python interpreter can't find the file.
+env -u MSYS_NO_PATHCONV add_repl.py "$JOB_ID" JOB_ID
+
+cleanup() {
+    title "Cleanup: delete the original job and notebook"
+    trace errcode $CLI jobs delete "$JOB_ID"
+    trace errcode $CLI workspace delete "/Workspace/Users/${CURRENT_USER_NAME}/test_notebook"
+}
+trap cleanup EXIT
+
+title "Generate bundle config from the job"
+trace $CLI bundle generate job --existing-job-id "$JOB_ID" --key out --config-dir resources --source-dir src --force
+
+title "Verify generated yaml has expected fields"
+cat resources/out.job.yml | env -u MSYS_NO_PATHCONV contains.py "task_key: test_task" "notebook_task:" "notebook_path: ../src/test_notebook.py" > /dev/null
+
+title "Deploy the generated bundle"
+trace $CLI bundle deploy
+
+title "Destroy the deployed bundle"
+trace $CLI bundle destroy --auto-approve

acceptance/bundle/generate/python_job_and_deploy/script

@@ -0,0 +1,13 @@
+Local = true
+Cloud = true
+
+Ignore = [
+    "databricks.yml",
+    "resources/*",
+    "src/*",
+    ".databricks",
+]
+
+[Env]
+# MSYS2 automatically converts absolute paths on Windows; disable for the workspace path.
+MSYS_NO_PATHCONV = "1"

acceptance/bundle/generate/python_job_and_deploy/test.toml

@@ -0,0 +1,2 @@
+# Databricks notebook source
+print("Hello, World!")