refactor: Display multiple failure elements in JUnit XML

src/schemathesis/cli/junitxml.py

@@ -20,16 +20,18 @@ def handle_event(self, context: ExecutionContext, event: events.ExecutionEvent)
         if isinstance(event, events.Initialized):
             self.start_time = event.start_time
         if isinstance(event, events.AfterExecution):
-            test_case = TestCase(f"{event.result.method} {event.result.path}", elapsed_sec=event.elapsed_time)
+            test_case = TestCase(
+                f"{event.result.method} {event.result.path}",
+                elapsed_sec=event.elapsed_time,
+                allow_multiple_subelements=True,
+            )
             if event.status == Status.failure:
                 checks = get_unique_failures(event.result.checks)
                 for idx, check in enumerate(checks, 1):
-                    message: Optional[str]
+                    message: Optional[str] = None
                     if check.message:
                         message = f"{idx}. {check.message}"
-                    else:
-                        message = None
-                test_case.add_failure_info(message=message)
+                    test_case.add_failure_info(message=message)
             if event.status == Status.error:
                 test_case.add_error_info(
                     message=event.result.errors[-1].exception, output=event.result.errors[-1].exception_with_traceback

test/cli/test_junitxml.py

@@ -43,7 +43,10 @@ def test_junitxml_file(cli, schema_url, tmp_path):
     assert testcases[0].attrib["name"] == "GET /api/failure"
     assert testcases[0][0].tag == "failure"
     assert testcases[0][0].attrib["type"] == "failure"
-    assert testcases[0][0].attrib["message"] == "2. Received a response with 5xx status code: 500"
+    assert (
+        testcases[0][0].attrib["message"] == "1. Received a response with 'text/plain; charset=utf-8' Content-Type, "
+        "but it is not declared in the schema.  Defined content types: application/json"
+    )
     # Inspect testcase with an error
     assert testcases[1].attrib["name"] == "GET /api/malformed_json"
     assert testcases[1][0].tag == "error"