issue 1496 - xfail with condition keyword

_pytest/skipping.py

@@ -7,6 +7,8 @@
 import pytest
 from _pytest.mark import MarkInfo, MarkDecorator
 
+MISSING = object()
+
 
 def pytest_addoption(parser):
     group = parser.getgroup("general")
@@ -120,7 +122,7 @@ def _istrue(self):
             return self.result
         if self.holder:
             d = self._getglobals()
-            if self.holder.args:
+            if self.holder.args or 'condition' in self.holder.kwargs:
                 self.result = False
                 # "holder" might be a MarkInfo or a MarkDecorator; only
                 # MarkInfo keeps track of all parameters it received in an
@@ -130,6 +132,9 @@ def _istrue(self):
                 else:
                     arglist = [(self.holder.args, self.holder.kwargs)]
                 for args, kwargs in arglist:
+                    condition = kwargs.get('condition', MISSING)
+                    if condition is not MISSING:
+                        args = (condition,)
                     for expr in args:
                         self.expr = expr
                         if isinstance(expr, py.builtin._basestring):

testing/test_skipping.py

@@ -405,6 +405,19 @@ def test_foo():
         result.stdout.fnmatch_lines('*1 passed*')
         assert result.ret == 0
 
+    @pytest.mark.parametrize('strict', [True, False])
+    def test_xfail_condition_keyword(self, testdir, strict):
+        p = testdir.makepyfile("""
+            import pytest
+
+            @pytest.mark.xfail(condition=False, reason='unsupported feature', strict=%s)
+            def test_foo():
+                pass
+        """ % strict)
+        result = testdir.runpytest(p, '-rxX')
+        result.stdout.fnmatch_lines('*1 passed*')
+        assert result.ret == 0
+
     @pytest.mark.parametrize('strict_val', ['true', 'false'])
     def test_strict_xfail_default_from_file(self, testdir, strict_val):
         testdir.makeini('''