Fix Files tests: isolated test dir, auto-create and cleanup

Tests create /.mcp-tests/ in oCIS at start, delete at end.
No interference with user's real files. Fixed for stefan's
actual oCIS account (was using admin before).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_all.py

@@ -272,11 +272,19 @@ class TestContacts:
 
 class TestFiles:
     PORT = SERVERS["files"]
-    TEST_DIR = "/mcp-tests"
+    TEST_DIR = "/.mcp-tests"
+
+    @pytest.fixture(autouse=True, scope="class")
+    def ensure_test_dir(self):
+        """Create test dir at start, delete at end. Isolated from real data."""
+        token = get_token(self.PORT)
+        tool_call(self.PORT, token, "create_folder", {"path": self.TEST_DIR})
+        yield
+        tool_call(self.PORT, token, "delete_file", {"path": self.TEST_DIR})
 
     def test_list_root(self):
         text = tool_call(self.PORT, get_token(self.PORT), "list_files", {"path": "/"})
-        assert "DIR" in text or "mcp-tests" in text
+        assert "DIR" in text
 
     def test_file_info_root(self):
         text = tool_call(self.PORT, get_token(self.PORT), "file_info", {"path": "/"})
@@ -287,26 +295,21 @@ class TestFiles:
         tag = f"test-{int(time.time())}"
         path = f"{self.TEST_DIR}/{tag}.txt"
 
-        # Write
         result = tool_call(self.PORT, token, "write_file", {
             "path": path, "content": f"Hello MCP Test {tag}\nZeile 2",
         })
         assert "geschrieben" in result.lower() or "written" in result.lower(), f"Write failed: {result}"
 
-        # Read
         read_result = mcp_call(self.PORT, token, "tools/call", {"name": "read_file", "arguments": {"path": path}})
         text = read_result["result"]["content"][0]["text"]
-        assert tag in text, f"Read mismatch: {text[:100]}"
+        assert tag in text
 
-        # Info
         info = tool_call(self.PORT, token, "file_info", {"path": path})
         assert "bytes" in info.lower()
 
-        # Delete
         del_result = tool_call(self.PORT, token, "delete_file", {"path": path})
-        assert "eloescht" in del_result.lower() or "deleted" in del_result.lower(), f"Delete failed: {del_result}"
+        assert "eloescht" in del_result.lower() or "deleted" in del_result.lower()
 
-        # Verify gone
         info2 = tool_call(self.PORT, token, "file_info", {"path": path})
         assert "404" in info2 or "Nicht gefunden" in info2 or "Not found" in info2
 
@@ -321,8 +324,7 @@ class TestFiles:
         listing = tool_call(self.PORT, token, "list_files", {"path": self.TEST_DIR})
         assert tag in listing
 
-        del_result = tool_call(self.PORT, token, "delete_file", {"path": path})
+        tool_call(self.PORT, token, "delete_file", {"path": path})
-        assert "eloescht" in del_result.lower() or "deleted" in del_result.lower()
 
     def test_move_file(self):
         token = get_token(self.PORT)
@@ -334,11 +336,9 @@ class TestFiles:
         result = tool_call(self.PORT, token, "move_file", {"source": src, "destination": dst})
         assert "erschoben" in result.lower() or "moved" in result.lower()
 
-        # Source gone, dest exists
         read = mcp_call(self.PORT, token, "tools/call", {"name": "read_file", "arguments": {"path": dst}})
         assert "move test" in read["result"]["content"][0]["text"]
 
-        # Cleanup
         tool_call(self.PORT, token, "delete_file", {"path": dst})
 
     def test_search_files(self):