factor out _get_line_with_reprcrash_message

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

@@ -204,31 +204,49 @@ 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 = len(ellipsis)
+
+    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 = len(sep)
+        max_len = termwidth - len_line - len_sep
+        if max_len >= len_ellipsis:
+            if len_msg > max_len:
+                msg = msg[: (max_len - 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)
-
-            line = "%s %s" % (verbose_word, pos)
-            try:
-                msg = rep.longrepr.reprcrash.message
-            except AttributeError:
-                pass
-            else:
-                # Only use the first line.
-                # Might be worth having a short_message property, which
-                # could default to this behavior.
-                i = msg.find("\n")
-                if i != -1:
-                    msg = msg[:i]
-                max_len = terminalreporter.writer.fullwidth - len(line) - 2
-                if len(msg) > max_len:
-                    msg = msg[: (max_len - 1)] + "…"
-                line += ": %s" % msg
-
+            line = _get_line_with_reprcrash_message(config, rep, termwidth)
             lines.append(line)
 
 

testing/test_skipping.py

@@ -1211,3 +1211,47 @@ def test_summary_list_after_errors(testdir):
             "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, 23) == "FAILED some::nodeid"
+    assert f(config, rep, 24) == "FAILED some::nodeid: msg"
+
+    rep.longrepr.reprcrash.message = "some longer message"
+    assert f(config, rep, 23) == "FAILED some::nodeid"
+    assert f(config, rep, 24) == "FAILED some::nodeid: ..."
+    assert f(config, rep, 25) == "FAILED some::nodeid: s..."
+
+    rep.longrepr.reprcrash.message = "some\nmessage"
+    assert f(config, rep, 24) == "FAILED some::nodeid: ..."
+    assert f(config, rep, 25) == "FAILED some::nodeid: some"
+    assert f(config, rep, 80) == "FAILED some::nodeid: some"

testing/test_terminal.py

@@ -735,7 +735,7 @@ def test_fail_extra_reporting(testdir, monkeypatch):
     result.stdout.fnmatch_lines(
         [
             "*test summary*",
-            "FAILED test_fail_extra_reporting.py::test_this: AssertionError: this_failedthis…",
+            "FAILED test_fail_extra_reporting.py::test_this: AssertionError: this_failedth...",
         ]
     )