Fix TestReport.longreprtext when TestReport.longrepr is not a string

Fix pytest-dev#7559

changelog/7559.bugfix.rst

@@ -0,0 +1 @@
+Fix regression in plugins using ``TestReport.longreprtext`` (such as ``pytest-html``) when ``TestReport.longrepr`` is not a string.

src/_pytest/reports.py

@@ -82,9 +82,10 @@ def toterminal(self, out: TerminalWriter) -> None:
             longrepr.toterminal(out)
         else:
             try:
-                out.line(longrepr)
+                s = str(longrepr)
             except UnicodeEncodeError:
-                out.line("<unprintable longrepr>")
+                s = "<unprintable longrepr>"
+            out.line(s)
 
     def get_sections(self, prefix: str) -> Iterator[Tuple[str, str]]:
         for name, content in self.sections:

testing/test_runner.py

@@ -951,6 +951,19 @@ def test_func():
         rep = reports[1]
         assert rep.longreprtext == ""
 
+    def test_longreprtext_skip(self, testdir) -> None:
+        """TestReport.longreprtext can handle non-str ``longrepr`` attributes (#7559)"""
+        reports = testdir.runitem(
+            """
+            import pytest
+            def test_func():
+                pytest.skip()
+            """
+        )
+        _, call_rep, _ = reports
+        assert isinstance(call_rep.longrepr, tuple)
+        assert "Skipped" in call_rep.longreprtext
+
     def test_longreprtext_failure(self, testdir) -> None:
         reports = testdir.runitem(
             """