Fix #14902: disambiguate duplicate report headings

AUTHORS

@@ -483,6 +483,7 @@ Terje Runde
 Thomas Grainger
 Thomas Hisch
 Tianyu Dongfang
+Tim Anderson
 Tim Hoffmann
 Tim Strazny
 TJ Bruno

changelog/14902.bugfix.rst

@@ -0,0 +1,2 @@
+Disambiguated terminal report headings for tests with the same name by including
+their node IDs when needed.

src/_pytest/terminal.py

@@ -1233,8 +1233,13 @@ def summary_failures_combined(
                         self._outrep_summary(rep)
                         self.write_line(line)
                 else:
+                    headline_counts = Counter(
+                        self._getfailureheadline(rep) for rep in reports
+                    )
                     for rep in reports:
                         msg = self._getfailureheadline(rep)
+                        if headline_counts[msg] > 1:
+                            msg = self.config.cwd_relative_nodeid(rep.nodeid) or msg
                         self.write_sep("_", msg, red=True, bold=True)
                         self._outrep_summary(rep)
                         self._handle_teardown_sections(rep.nodeid)
@@ -1245,8 +1250,13 @@ def summary_errors(self) -> None:
             if not reports:
                 return
             self.write_sep("=", "ERRORS")
-            for rep in self.stats["error"]:
+            headline_counts = Counter(
+                (rep.when, self._getfailureheadline(rep)) for rep in reports
+            )
+            for rep in reports:
                 msg = self._getfailureheadline(rep)
+                if headline_counts[rep.when, msg] > 1:
+                    msg = self.config.cwd_relative_nodeid(rep.nodeid) or msg
                 if rep.when == "collect":
                     msg = "ERROR collecting " + msg
                 else:

testing/test_terminal.py

@@ -653,6 +653,61 @@ def test_bar(): pass
 
 
 class TestFixtureReporting:
+    def test_duplicate_setup_error_headlines_are_disambiguated(
+        self, pytester: Pytester
+    ) -> None:
+        pytester.makeconftest(
+            """
+            import pytest
+
+            @pytest.fixture
+            def fixture():
+                raise RuntimeError("fixture failed")
+            """
+        )
+        pytester.makepyfile(
+            test_1="""
+                def test(fixture):
+                    pass
+            """,
+            test_2="""
+                def test(fixture):
+                    pass
+            """,
+        )
+
+        result = pytester.runpytest("-q")
+
+        result.stdout.fnmatch_lines(
+            [
+                "*ERROR at setup of test_1.py::test*",
+                "*ERROR at setup of test_2.py::test*",
+            ]
+        )
+
+    def test_duplicate_failure_headlines_are_disambiguated(
+        self, pytester: Pytester
+    ) -> None:
+        pytester.makepyfile(
+            test_1="""
+                def test():
+                    assert False
+            """,
+            test_2="""
+                def test():
+                    assert False
+            """,
+        )
+
+        result = pytester.runpytest("-q")
+
+        result.stdout.fnmatch_lines(
+            [
+                "*_ test_1.py::test _*",
+                "*_ test_2.py::test _*",
+            ]
+        )
+
     def test_setup_fixture_error(self, pytester: Pytester) -> None:
         pytester.makepyfile(
             """