Fixed issue shadowing error when missing argument on teardown_method

AUTHORS

@@ -91,3 +91,4 @@ Thomas Grainger
 Tom Viner
 Trevor Bekolay
 Wouter van Ackooy
+Bernard Pratz

CHANGELOG.rst

@@ -6,7 +6,8 @@
 * Text documents without any doctests no longer appear as "skipped".
   Thanks `@graingert`_ for reporting and providing a full PR (`#1580`_).
 
-*
+* Fix internal error issue when ``method`` argument is missing for 
+  ``teardown_method()``. Fixes (`#1605`_).
 
 *
 
@@ -15,6 +16,7 @@
   `@marscher`. Thanks `@nicoddemus` for his help.
 
 .. _#1580: https://github.com/pytest-dev/pytest/issues/1580
+.. _#1605: https://github.com/pytest-dev/pytest/issues/1605
 
 .. _@graingert: https://github.com/graingert
 

_pytest/main.py

@@ -392,7 +392,10 @@ def _repr_failure_py(self, excinfo, style=None):
         if self.config.option.fulltrace:
             style="long"
         else:
+            tb = _pytest._code.Traceback([excinfo.traceback[-1]])
             self._prunetraceback(excinfo)
+            if len(excinfo.traceback) == 0:
+                excinfo.traceback = tb
             tbfilter = False  # prunetraceback already does it
             if style == "auto":
                 style = "long"

testing/test_runner.py

@@ -228,6 +228,39 @@ def teardown_function(func):
         assert reps[5].nodeid.endswith("test_func")
         assert reps[5].failed
 
+    def test_exact_teardown_issue1206(self, testdir):
+        rec = testdir.inline_runsource("""
+            import pytest
+
+            class TestClass:
+                def teardown_method(self):
+                    pass
+
+                def test_method(self):
+                    assert True
+        """)
+        reps = rec.getreports("pytest_runtest_logreport")
+        print (reps)
+        assert len(reps) == 3
+        #
+        assert reps[0].nodeid.endswith("test_method")
+        assert reps[0].passed
+        assert reps[0].when == 'setup'
+        #
+        assert reps[1].nodeid.endswith("test_method")
+        assert reps[1].passed
+        assert reps[1].when == 'call'
+        #
+        assert reps[2].nodeid.endswith("test_method")
+        assert reps[2].failed
+        assert reps[2].when == "teardown"
+        assert reps[2].longrepr.reprcrash.message in (
+                # python3 error
+                'TypeError: teardown_method() takes 1 positional argument but 2 were given',
+                # python2 error
+                'TypeError: teardown_method() takes exactly 1 argument (2 given)'
+                )
+
     def test_failure_in_setup_function_ignores_custom_repr(self, testdir):
         testdir.makepyfile(conftest="""
             import pytest