Handle JUnit <error> result state in parse_testcase()

Previously, test cases with an <error> element were silently classified
as "passed" because the if/elif/else chain only checked for <skipped>
and <failure>. This is a false-positive verdict — errors indicate
unexpected exceptions or infrastructure crashes, not passing tests.

- Add explicit handling for the <error> element in parse_testcase()
- Add CSS styling for the tr_error result type (orange)
- Also fix potential None in failure text (use `or ""` guard)
- Add test fixture and test case for error state parsing

Closes #132

Author: patdhlk

sphinxcontrib/test_reports/css/common.css

@@ -10,6 +10,10 @@ tr.tr_skipped{
     background-color: rgba(0,0,0,0.1) !important;
 }
 
+tr.tr_error, div.tr_error {
+    background-color: rgba(255,165,0,0.2) !important;
+}
+
 td.status p {
     padding: 3px 5px;
     text-align: center;
@@ -30,3 +34,8 @@ td.status p.tr_skipped{
     border: 1px solid #555;
     color: #555;
 }
+
+td.status p.tr_error{
+    border: 1px solid #cc6600;
+    color: #cc6600;
+}

sphinxcontrib/test_reports/junitparser.py

@@ -70,8 +70,14 @@ def parse_testcase(xml_object):
                 tc_dict["result"] = "failure"
                 tc_dict["type"] = result.attrib.get("type", "unknown")
                 # tc_dict["text"] = re.sub(r"[\n\t]*", "", result.text)  # Removes newlines and tabs
-                tc_dict["text"] = result.text
-                tc_dict["message"] = ""
+                tc_dict["text"] = result.text or ""
+                tc_dict["message"] = result.attrib.get("message", "")
+            elif hasattr(testcase, "error"):
+                result = testcase.error
+                tc_dict["result"] = "error"
+                tc_dict["type"] = result.attrib.get("type", "unknown")
+                tc_dict["text"] = result.text or ""
+                tc_dict["message"] = result.attrib.get("message", "unknown")
             else:
                 tc_dict["result"] = "passed"
                 tc_dict["type"] = ""

tests/doc_test/utils/xml_data_error.xml

@@ -0,0 +1,12 @@
+<testsuite name="error_suite" tests="4" errors="1" failures="1" skips="0">
+    <testcase classname="foo1" name="ASuccessfulTest" time="0.001"/>
+    <testcase classname="foo2" name="AFailingTest" time="0.002">
+        <failure type="AssertionError" message="expected true">some failure details</failure>
+    </testcase>
+    <testcase classname="foo3" name="AnErrorTest" time="0.003">
+        <error type="RuntimeError" message="unexpected crash">stack trace here</error>
+    </testcase>
+    <testcase classname="foo4" name="ASkippedTest" time="0.000">
+        <skipped type="skip" message="not applicable"/>
+    </testcase>
+</testsuite>

tests/test_junit_parser.py

@@ -16,6 +16,9 @@
 )
 
 xml_ctest_path = os.path.join(os.path.dirname(__file__), "doc_test/utils", "ctest.xml")
+xml_error_path = os.path.join(
+    os.path.dirname(__file__), "doc_test/utils", "xml_data_error.xml"
+)
 
 
 def test_init_parser():
@@ -148,3 +151,33 @@ def test_parse_ctest_xml():
     assert test_suite["testcases"][3]["result"] == "failure"
     assert test_suite["testcases"][4]["name"] == "skipped_test"
     assert test_suite["testcases"][4]["result"] == "skipped"
+
+
+def test_parse_error_xml():
+    from sphinxcontrib.test_reports.junitparser import JUnitParser
+
+    parser = JUnitParser(xml_error_path)
+    test_suites = parser.parse()
+
+    assert len(test_suites) == 1
+    test_suite = test_suites[0]
+
+    assert test_suite["name"] == "error_suite"
+    assert test_suite["tests"] == 4
+    assert test_suite["errors"] == 1
+    assert test_suite["failures"] == 1
+
+    assert test_suite["testcases"][0]["name"] == "ASuccessfulTest"
+    assert test_suite["testcases"][0]["result"] == "passed"
+
+    assert test_suite["testcases"][1]["name"] == "AFailingTest"
+    assert test_suite["testcases"][1]["result"] == "failure"
+
+    assert test_suite["testcases"][2]["name"] == "AnErrorTest"
+    assert test_suite["testcases"][2]["result"] == "error"
+    assert test_suite["testcases"][2]["type"] == "RuntimeError"
+    assert test_suite["testcases"][2]["message"] == "unexpected crash"
+    assert test_suite["testcases"][2]["text"] == "stack trace here"
+
+    assert test_suite["testcases"][3]["name"] == "ASkippedTest"
+    assert test_suite["testcases"][3]["result"] == "skipped"