With -vv, display the full skip/xfail reason instead of "..."

changelog/9536.improvement.rst

@@ -0,0 +1 @@
+When ``-vv`` is given on command line, show skipping and xfail reasons in full instead of truncating them to fit the terminal width.

src/_pytest/terminal.py

@@ -542,15 +542,21 @@ def pytest_runtest_logreport(self, report: TestReport) -> None:
             if not running_xdist:
                 self.write_ensure_prefix(line, word, **markup)
                 if rep.skipped or hasattr(report, "wasxfail"):
-                    available_width = (
-                        (self._tw.fullwidth - self._tw.width_of_current_line)
-                        - len(" [100%]")
-                        - 1
-                    )
                     reason = _get_raw_skip_reason(rep)
-                    reason_ = _format_trimmed(" ({})", reason, available_width)
-                    if reason and reason_ is not None:
-                        self._tw.write(reason_)
+                    if self.config.option.verbose < 2:
+                        available_width = (
+                            (self._tw.fullwidth - self._tw.width_of_current_line)
+                            - len(" [100%]")
+                            - 1
+                        )
+                        formatted_reason = _format_trimmed(
+                            " ({})", reason, available_width
+                        )
+                    else:
+                        formatted_reason = f" ({reason})"
+
+                    if reason and formatted_reason is not None:
+                        self._tw.write(formatted_reason)
                 if self._show_progress_info:
                     self._write_progress_information_filling_space()
             else:

testing/test_terminal.py

@@ -385,21 +385,55 @@ def test_9():
 
             def test_10():
                 pytest.xfail("It's 🕙 o'clock")
+
+            @pytest.mark.skip(
+                reason="cannot do foobar because baz is missing due to I don't know what"
+            )
+            def test_long_skip():
+                pass
+
+            @pytest.mark.xfail(
+                reason="cannot do foobar because baz is missing due to I don't know what"
+            )
+            def test_long_xfail():
+                print(1 / 0)
         """
         )
+
+        common_output = [
+            "test_verbose_skip_reason.py::test_1 SKIPPED (123) *",
+            "test_verbose_skip_reason.py::test_2 XPASS (456) *",
+            "test_verbose_skip_reason.py::test_3 XFAIL (789) *",
+            "test_verbose_skip_reason.py::test_4 XFAIL  *",
+            "test_verbose_skip_reason.py::test_5 SKIPPED (unconditional skip) *",
+            "test_verbose_skip_reason.py::test_6 XPASS  *",
+            "test_verbose_skip_reason.py::test_7 SKIPPED  *",
+            "test_verbose_skip_reason.py::test_8 SKIPPED (888 is great) *",
+            "test_verbose_skip_reason.py::test_9 XFAIL  *",
+            "test_verbose_skip_reason.py::test_10 XFAIL (It's 🕙 o'clock) *",
+        ]
+
         result = pytester.runpytest("-v")
         result.stdout.fnmatch_lines(
-            [
-                "test_verbose_skip_reason.py::test_1 SKIPPED (123) *",
-                "test_verbose_skip_reason.py::test_2 XPASS (456) *",
-                "test_verbose_skip_reason.py::test_3 XFAIL (789) *",
-                "test_verbose_skip_reason.py::test_4 XFAIL  *",
-                "test_verbose_skip_reason.py::test_5 SKIPPED (unconditional skip) *",
-                "test_verbose_skip_reason.py::test_6 XPASS  *",
-                "test_verbose_skip_reason.py::test_7 SKIPPED  *",
-                "test_verbose_skip_reason.py::test_8 SKIPPED (888 is great) *",
-                "test_verbose_skip_reason.py::test_9 XFAIL  *",
-                "test_verbose_skip_reason.py::test_10 XFAIL (It's 🕙 o'clock) *",
+            common_output
+            + [
+                "test_verbose_skip_reason.py::test_long_skip SKIPPED (cannot *...) *",
+                "test_verbose_skip_reason.py::test_long_xfail XFAIL (cannot *...) *",
+            ]
+        )
+
+        result = pytester.runpytest("-vv")
+        result.stdout.fnmatch_lines(
+            common_output
+            + [
+                (
+                    "test_verbose_skip_reason.py::test_long_skip SKIPPED"
+                    " (cannot do foobar because baz is missing due to I don't know what) *"
+                ),
+                (
+                    "test_verbose_skip_reason.py::test_long_xfail XFAIL"
+                    " (cannot do foobar because baz is missing due to I don't know what) *"
+                ),
             ]
         )