Add "all" depend which skips if any previous test did not pass

Author: JoeSc

pytest_dependency.py

@@ -72,14 +72,19 @@ def addResult(self, item, name, rep):
         status.addResult(rep)
 
     def checkDepend(self, depends, item):
-        for i in depends:
-            if i in self.results:
-                if self.results[i].isSuccess():
-                    continue
-            else:
-                if _ignore_unknown:
-                    continue
-            pytest.skip("%s depends on %s" % (item.name, i))
+        if depends == "all":
+            for key in self.results:
+                if not self.results[key].isSuccess():
+                    pytest.skip("%s depends on all previous tests passing (%s failed)" % (item.name, key))
+        else:
+            for i in depends:
+                if i in self.results:
+                    if self.results[i].isSuccess():
+                        continue
+                else:
+                    if _ignore_unknown:
+                        continue
+                pytest.skip("%s depends on %s" % (item.name, i))
 
 
 def depends(request, other):

tests/test_05_alldepend.py

@@ -0,0 +1,46 @@
+"""Test the "all" dependency.
+"""
+
+import pytest
+
+
+def test_all(ctestdir):
+    """ Show that depends="all" causes the test to be skipped if a
+    previous test has failed """
+    ctestdir.makepyfile("""
+        import pytest
+
+        @pytest.mark.dependency()
+        def test_a():
+            pass
+
+        @pytest.mark.dependency(depends="all")
+        def test_b():
+            pass
+
+        @pytest.mark.dependency()
+        def test_c():
+            assert False
+
+        @pytest.mark.dependency(depends="all")
+        def test_d():
+            pass
+
+        class TestClass(object):
+
+            @pytest.mark.dependency()
+            def test_a(self):
+                pass
+
+            @pytest.mark.dependency(depends="all")
+            def test_b(self):
+                pass
+    """)
+    result = ctestdir.runpytest("--verbose", "test_all.py")
+    result.assert_outcomes(passed=3, skipped=2, failed=1)
+    result.stdout.fnmatch_lines("""
+        *::test_b PASSED
+        *::test_c FAILED
+        *::test_d SKIPPED
+        *::TestClass::test_b SKIPPED
+    """)