xfail some tests for doctest support if pdbpp is installed

_pytest/main.py

@@ -373,7 +373,7 @@ class Collector(Node):
     # the set of exceptions to interpret as "Skip the whole module" during
     # collection
     skip_exceptions = (_pytest.runner.Skipped,)
-    
+
     class CollectError(Exception):
         """ an error during collection, contains a custom message. """
 

testing/test_doctest.py

@@ -1,6 +1,11 @@
 from _pytest.doctest import DoctestItem, DoctestModule, DoctestTextfile
 import py, pytest
 
+import pdb
+
+xfail_if_pdbpp_installed = pytest.mark.xfail(hasattr(pdb, "__author__"),
+    reason="doctest/pdbpp problem: https://bitbucket.org/antocuni/pdb/issue/24/doctests-fail-when-pdbpp-is-installed")
+
 class TestDoctests:
 
     def test_collect_testtextfile(self, testdir):
@@ -154,6 +159,7 @@ class TestDoctests:
         reprec = testdir.inline_run(p, "--doctest-modules")
         reprec.assertoutcome(failed=1)
 
+    @xfail_if_pdbpp_installed
     def test_doctestmodule_external_and_issue116(self, testdir):
         p = testdir.mkpydir("hello")
         p.join("__init__.py").write(py.code.Source("""
@@ -193,6 +199,7 @@ class TestDoctests:
             "*test_txtfile_failing.txt:2: DocTestFailure"
         ])
 
+    @xfail_if_pdbpp_installed
     def test_txtfile_with_fixtures(self, testdir):
         p = testdir.maketxtfile("""
             >>> dir = getfixture('tmpdir')
@@ -202,6 +209,8 @@ class TestDoctests:
         reprec = testdir.inline_run(p, )
         reprec.assertoutcome(passed=1)
 
+
+    @xfail_if_pdbpp_installed
     def test_doctestmodule_with_fixtures(self, testdir):
         p = testdir.makepyfile("""
             '''
@@ -213,6 +222,7 @@ class TestDoctests:
         reprec = testdir.inline_run(p, "--doctest-modules")
         reprec.assertoutcome(passed=1)
 
+    @xfail_if_pdbpp_installed
     def test_doctestmodule_three_tests(self, testdir):
         p = testdir.makepyfile("""
             '''
@@ -238,6 +248,7 @@ class TestDoctests:
         reprec = testdir.inline_run(p, "--doctest-modules")
         reprec.assertoutcome(passed=3)
 
+    @xfail_if_pdbpp_installed
     def test_doctestmodule_two_tests_one_fail(self, testdir):
         p = testdir.makepyfile("""
             class MyClass: