wip(test): category_tester + audit_walk_zip_builder (salvaged)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend-compliance/tests/test_audit_walk_zip_builder.py

@@ -0,0 +1,87 @@
+"""Tests for the audit-walk ZIP-builder."""
+
+import io
+import json
+import zipfile
+from unittest.mock import patch, MagicMock
+
+from compliance.services.audit_walk_zip_builder import (
+    _readme,
+    build_audit_walk_zip,
+)
+
+
+_FAKE_WALK = {
+    "walk_id": "abc123def456",
+    "url": "https://example.com/",
+    "started_at": "2026-06-07T10:00:00+00:00",
+    "completed_at": "2026-06-07T10:00:30+00:00",
+    "video": {
+        "filename": "video.webm",
+        "size_bytes": 12345,
+        "sha256": "a" * 64,
+        "dsms": {"cid": "QmFakeCidVideo"},
+    },
+    "walk_json_dsms": {"cid": "QmFakeCidMeta"},
+    "actions": [
+        {"action": "navigate", "url": "https://example.com/dse"},
+        {"action": "navigate", "url": "https://example.com/imprint"},
+        {"action": "expand_accordions", "expanded": 3},
+    ],
+}
+
+
+class TestReadme:
+    def test_contains_walk_id_and_url(self):
+        r = _readme(_FAKE_WALK)
+        assert "abc123def456" in r
+        assert "https://example.com/" in r
+
+    def test_contains_dsms_cids(self):
+        r = _readme(_FAKE_WALK)
+        assert "QmFakeCidVideo" in r
+        assert "QmFakeCidMeta" in r
+
+    def test_counts_navigates_and_accordions(self):
+        r = _readme(_FAKE_WALK)
+        assert "2 Compliance-Seiten" in r
+        assert "3 Akkordeon" in r
+
+
+class TestBuildZip:
+    def test_empty_walk_returns_empty(self):
+        assert build_audit_walk_zip({}) == b""
+
+    def test_zip_contains_three_entries(self):
+        # Mock the video fetch to return tiny content
+        with patch(
+            "compliance.services.audit_walk_zip_builder.httpx.Client"
+        ) as mock_client:
+            instance = mock_client.return_value.__enter__.return_value
+            instance.get.return_value = MagicMock(
+                status_code=200, content=b"fakevideo",
+            )
+            zip_bytes = build_audit_walk_zip(_FAKE_WALK)
+        assert zip_bytes
+        with zipfile.ZipFile(io.BytesIO(zip_bytes)) as z:
+            names = set(z.namelist())
+            assert {"video.webm", "walk.json", "README.txt"}.issubset(names)
+            walk_content = json.loads(z.read("walk.json"))
+            assert walk_content["walk_id"] == "abc123def456"
+            assert z.read("video.webm") == b"fakevideo"
+
+    def test_video_fetch_failure_still_produces_zip(self):
+        # consent-tester down → no video, but ZIP still contains
+        # walk.json + README so the recipient has the metadata.
+        with patch(
+            "compliance.services.audit_walk_zip_builder.httpx.Client"
+        ) as mock_client:
+            instance = mock_client.return_value.__enter__.return_value
+            instance.get.side_effect = Exception("network down")
+            zip_bytes = build_audit_walk_zip(_FAKE_WALK)
+        assert zip_bytes
+        with zipfile.ZipFile(io.BytesIO(zip_bytes)) as z:
+            names = z.namelist()
+            assert "video.webm" not in names
+            assert "walk.json" in names
+            assert "README.txt" in names