add setting to accept xfail test dependencies

doc/src/configuration.rst

@@ -36,6 +36,12 @@ automark_dependency
 
    .. versionadded:: 0.3
 
+accept_xfail
+   This is a flag. If set to `True`, will treat xfailing dependencies as
+   successful. Defaults to `False`.
+
+   .. versionadded:: 0.6
+
 Command line options
 --------------------
 

src/pytest_dependency.py

@@ -7,6 +7,7 @@
 
 logger = logging.getLogger(__name__)
 
+_accept_xfail = False
 _automark = False
 _ignore_unknown = False
 
@@ -24,8 +25,12 @@ def __str__(self):
         l = ["%s: %s" % (w, self.results[w]) for w in self.Phases]
         return "Status(%s)" % ", ".join(l)
 
+    def _accept_xfail(self, rep):
+        '''Take xfail and accept_xfail into account.'''
+        return _accept_xfail and (rep.when == 'call') and (rep.outcome == 'skipped') and (hasattr(rep, 'wasxfail'))
+
     def addResult(self, rep):
-        self.results[rep.when] = rep.outcome
+        self.results[rep.when] = 'passed' if self._accept_xfail(rep) else rep.outcome
 
     def isSuccess(self):
         return list(self.results.values()) == ['passed', 'passed', 'passed']
@@ -129,13 +134,17 @@ def pytest_addoption(parser):
     parser.addini("automark_dependency", 
                   "Add the dependency marker to all tests automatically", 
                   type="bool", default=False)
+    parser.addini("accept_xfail", 
+                  "Consider xfailing dependencies as succesful dependencies.", 
+                  type="bool", default=False)
     parser.addoption("--ignore-unknown-dependency", 
                      action="store_true", default=False, 
                      help="ignore dependencies whose outcome is not known")
 
 
 def pytest_configure(config):
-    global _automark, _ignore_unknown
+    global _accept_xfail, _automark, _ignore_unknown
+    _accept_xfail = config.getini("accept_xfail")
     _automark = config.getini("automark_dependency")
     _ignore_unknown = config.getoption("--ignore-unknown-dependency")
     config.addinivalue_line("markers", 

tests/test_10_accept_xfail.py

@@ -0,0 +1,101 @@
+"""Test the accept_xfail option.
+"""
+
+import pytest
+
+
+def test_accept_xfail_not_set(ctestdir):
+    """No pytest.ini file, therefore accept_xfail is not set.
+
+    Since accept_xfail defaults to False and test_a is marked as xfail, 
+    the xfailed outcome of test_a will be considered as skipped. As a result,
+    test_b will be skipped since its dependency was not successful.
+    """
+    ctestdir.makepyfile("""
+        import pytest
+
+        @pytest.mark.dependency()
+        @pytest.mark.xfail()
+        def test_a():
+            assert False
+
+        @pytest.mark.dependency(depends=["test_a"])
+        def test_b():
+            pass
+    """)
+    result = ctestdir.runpytest("--verbose", "-rs")
+    result.assert_outcomes(xfailed=1, skipped=1)
+    result.stdout.re_match_lines(r"""
+        .*::test_a XFAIL
+        .*::test_b SKIPPED(?:\s+\(.*\))?
+    """)
+
+
+@pytest.mark.parametrize(
+    "false_value", ["0", "no", "n", "False", "false", "f", "off"]
+)
+def test_accept_xfail_set_false(ctestdir, false_value):
+    """A pytest.ini is present, accept_xfail is set to False.
+
+    Since accept_xfail is set to False and test_a is marked as xfail, 
+    the xfailed outcome of test_a will be considered as skipped. As a result,
+    test_b will be skipped since its dependency was not successful.
+    """
+    ctestdir.makefile('.ini', pytest="""
+        [pytest]
+        accept_xfail = %s
+        console_output_style = classic
+    """ % false_value)
+    ctestdir.makepyfile("""
+        import pytest
+
+        @pytest.mark.dependency()
+        @pytest.mark.xfail()
+        def test_a():
+            assert False
+
+        @pytest.mark.dependency(depends=["test_a"])
+        def test_b():
+            pass
+    """)
+    result = ctestdir.runpytest("--verbose", "-rs")
+    result.assert_outcomes(xfailed=1, skipped=1)
+    result.stdout.re_match_lines(r"""
+        .*::test_a XFAIL
+        .*::test_b SKIPPED(?:\s+\(.*\))?
+    """)
+
+
+@pytest.mark.parametrize(
+    "true_value", ["1", "yes", "y", "True", "true", "t", "on"]
+)
+def test_accept_xfail_set_true(ctestdir, true_value):
+    """A pytest.ini is present, accept_xfail is set to True.
+
+    Since accept_xfail is set to True and test_a is marked as xfail, 
+    the xfailed outcome of test_a will be considered as passing. As a result,
+    test_b will be executed since its dependency was successful.
+    """
+    ctestdir.makefile('.ini', pytest="""
+        [pytest]
+        accept_xfail = %s
+        console_output_style = classic
+    """ % true_value)
+    ctestdir.makepyfile("""
+        import pytest
+
+        @pytest.mark.dependency()
+        @pytest.mark.xfail()
+        def test_a():
+            assert False
+
+        @pytest.mark.dependency(depends=["test_a"])
+        def test_b():
+            pass
+    """)
+    result = ctestdir.runpytest("--verbose", "-rs")
+    result.assert_outcomes(xfailed=1, passed=1, skipped=0)
+    result.stdout.re_match_lines(r"""
+        .*::test_a XFAIL
+        .*::test_b PASSED
+    """)