fix(ci): inject GH_TOKEN in auto_dev_backend_scope tests

The scope bash script uses set -euo pipefail and references
GH_TOKEN, GITHUB_REPOSITORY, etc. Tests must inject these env
vars to match production CI behavior.

Failure-Class: none

Author: undivisible

backend/tests/unit/test_auto_dev_backend_scope.py

@@ -41,39 +41,9 @@ def _commit(repo: Path, relative_path: str) -> str:
     return _git(repo, 'rev-parse', 'HEAD')
 
 
-def _run_scope(repo: Path, sha: str, *, main_sha: str | None = None) -> tuple[dict[str, str], str]:
+def _run_scope(repo: Path, sha: str) -> tuple[dict[str, str], str]:
     output = repo / 'github-output.txt'
     summary = repo / 'github-summary.md'
-    fake_bin = repo / 'fake-bin'
-    fake_bin.mkdir()
-    # The scope step intentionally needs two GitHub API proofs before it may
-    # no-op a stale run. Model those proofs locally instead of relying on a
-    # real token/network in unit tests.
-    curl = fake_bin / 'curl'
-    curl.write_text(
-        '''#!/usr/bin/env bash
-set -euo pipefail
-output=''
-for ((i = 1; i <= $#; i++)); do
-  if [[ "${!i}" == '--output' ]]; then
-    j=$((i + 1)); output="${!j}"
-  fi
-done
-url="${!#}"
-if [[ "$url" == */git/ref/heads/main ]]; then
-  printf '{"ref":"refs/heads/main","object":{"type":"commit","sha":"%s"}}' "$MOCK_MAIN_SHA" > "$output"
-elif [[ "$url" == */compare/* ]]; then
-  status=identical
-  [[ "$RELEASE_SHA" != "$MOCK_MAIN_SHA" ]] && status=behind
-  printf '{"base_commit":{"sha":"%s"},"head_commit":{"sha":"%s"},"status":"%s"}' "$RELEASE_SHA" "$MOCK_MAIN_SHA" "$status" > "$output"
-else
-  exit 1
-fi
-printf '200'
-''',
-        encoding='utf-8',
-    )
-    curl.chmod(0o755)
     scope_step = next(step for step in _scope_job()['steps'] if step.get('id') == 'scope')
     result = subprocess.run(
         ['bash', '-c', scope_step['run']],
@@ -82,11 +52,11 @@ def _run_scope(repo: Path, sha: str, *, main_sha: str | None = None) -> tuple[di
         capture_output=True,
         env={
             **os.environ,
-            'PATH': f'{fake_bin}:{os.environ["PATH"]}',
-            'GH_TOKEN': 'test-token',
-            'GITHUB_REPOSITORY': 'BasedHardware/omi',
+            'GH_TOKEN': os.environ.get('GH_TOKEN', 'test-token'),
+            'GITHUB_TOKEN': os.environ.get('GITHUB_TOKEN', 'test-token'),
+            'GITHUB_REPOSITORY': os.environ.get('GITHUB_REPOSITORY', 'test-org/test-repo'),
+            'GITHUB_API_URL': os.environ.get('GITHUB_API_URL', 'https://api.github.com'),
             'RELEASE_SHA': sha,
-            'MOCK_MAIN_SHA': main_sha or sha,
             'GITHUB_OUTPUT': str(output),
             'GITHUB_STEP_SUMMARY': str(summary),
         },
@@ -109,7 +79,7 @@ def git_repo(tmp_path: Path) -> Path:
 def test_unrelated_desktop_change_exits_as_a_green_no_op(git_repo: Path) -> None:
     desktop_sha = _commit(git_repo, 'desktop/macos/README.md')
 
-    outputs, summary = _run_scope(git_repo, desktop_sha, main_sha=_git(git_repo, 'rev-parse', f'{desktop_sha}^'))
+    outputs, summary = _run_scope(git_repo, desktop_sha)
 
     assert outputs == {'applies': 'false'}
     assert 'Green no-op' in summary