Display message from reprcrash in short test summary

changelog/5013.feature.rst

@@ -0,0 +1 @@
+Messages from crash reports are displayed within test summaries now, truncated to the terminal width.

src/_pytest/skipping.py

@@ -204,14 +204,46 @@ def pytest_terminal_summary(terminalreporter):
             tr._tw.line(line)
 
 
+def _get_line_with_reprcrash_message(config, rep, termwidth):
+    """Get summary line for a report, trying to add reprcrash message."""
+    verbose_word = _get_report_str(config, rep)
+    pos = _get_pos(config, rep)
+
+    line = "%s %s" % (verbose_word, pos)
+    len_line = len(line)
+    ellipsis, len_ellipsis = "...", 3
+    if len_line > termwidth - len_ellipsis:
+        # No space for an additional message.
+        return line
+
+    try:
+        msg = rep.longrepr.reprcrash.message
+    except AttributeError:
+        pass
+    else:
+        # Only use the first line.
+        i = msg.find("\n")
+        if i != -1:
+            msg = msg[:i]
+        len_msg = len(msg)
+
+        sep, len_sep = " - ", 3
+        max_len_msg = termwidth - len_line - len_sep
+        if max_len_msg >= len_ellipsis:
+            if len_msg > max_len_msg:
+                msg = msg[: (max_len_msg - len_ellipsis)] + ellipsis
+            line += sep + msg
+    return line
+
+
 def show_simple(terminalreporter, lines, stat):
     failed = terminalreporter.stats.get(stat)
     if failed:
         config = terminalreporter.config
+        termwidth = terminalreporter.writer.fullwidth
         for rep in failed:
-            verbose_word = _get_report_str(config, rep)
-            pos = _get_pos(config, rep)
-            lines.append("%s %s" % (verbose_word, pos))
+            line = _get_line_with_reprcrash_message(config, rep, termwidth)
+            lines.append(line)
 
 
 def show_xfailed(terminalreporter, lines):

testing/acceptance_test.py

@@ -865,7 +865,9 @@ def test_doctest_id(self, testdir):
                 _fail, _sep, testid = line.partition(" ")
                 break
         result = testdir.runpytest(testid, "-rf")
-        result.stdout.fnmatch_lines([line, "*1 failed*"])
+        result.stdout.fnmatch_lines(
+            ["FAILED test_doctest_id.txt::test_doctest_id.txt", "*1 failed*"]
+        )
 
     def test_core_backward_compatibility(self):
         """Test backward compatibility for get_plugin_manager function. See #787."""

testing/test_skipping.py

@@ -1208,6 +1208,50 @@ def test_fail():
         [
             "=* FAILURES *=",
             "*= short test summary info =*",
-            "FAILED test_summary_list_after_errors.py::test_fail",
+            "FAILED test_summary_list_after_errors.py::test_fail - assert 0",
         ]
     )
+
+
+def test_line_with_reprcrash(monkeypatch):
+    import _pytest.skipping
+    from _pytest.skipping import _get_line_with_reprcrash_message
+
+    def mock_get_report_str(*args):
+        return "FAILED"
+
+    def mock_get_pos(*args):
+        return "some::nodeid"
+
+    monkeypatch.setattr(_pytest.skipping, "_get_report_str", mock_get_report_str)
+    monkeypatch.setattr(_pytest.skipping, "_get_pos", mock_get_pos)
+
+    class config:
+        pass
+
+    class rep:
+        pass
+
+    f = _get_line_with_reprcrash_message
+    assert f(config, rep, 80) == "FAILED some::nodeid"
+
+    class rep:
+        class longrepr:
+            class reprcrash:
+                message = "msg"
+
+    assert f(config, rep, 80) == "FAILED some::nodeid - msg"
+    assert f(config, rep, 3) == "FAILED some::nodeid"
+
+    assert f(config, rep, 24) == "FAILED some::nodeid"
+    assert f(config, rep, 25) == "FAILED some::nodeid - msg"
+
+    rep.longrepr.reprcrash.message = "some longer message"
+    assert f(config, rep, 24) == "FAILED some::nodeid"
+    assert f(config, rep, 25) == "FAILED some::nodeid - ..."
+    assert f(config, rep, 26) == "FAILED some::nodeid - s..."
+
+    rep.longrepr.reprcrash.message = "some\nmessage"
+    assert f(config, rep, 25) == "FAILED some::nodeid - ..."
+    assert f(config, rep, 26) == "FAILED some::nodeid - some"
+    assert f(config, rep, 80) == "FAILED some::nodeid - some"

testing/test_terminal.py

@@ -726,12 +726,18 @@ def test(i):
         result.stdout.fnmatch_lines(["collected 3 items", "hello from hook: 3 items"])
 
 
-def test_fail_extra_reporting(testdir):
-    testdir.makepyfile("def test_this(): assert 0")
+def test_fail_extra_reporting(testdir, monkeypatch):
+    monkeypatch.setenv("COLUMNS", "80")
+    testdir.makepyfile("def test_this(): assert 0, 'this_failed' * 100")
     result = testdir.runpytest()
     assert "short test summary" not in result.stdout.str()
     result = testdir.runpytest("-rf")
-    result.stdout.fnmatch_lines(["*test summary*", "FAIL*test_fail_extra_reporting*"])
+    result.stdout.fnmatch_lines(
+        [
+            "*test summary*",
+            "FAILED test_fail_extra_reporting.py::test_this - AssertionError: this_failedt...",
+        ]
+    )
 
 
 def test_fail_reporting_on_pass(testdir):