Merge remote-tracking branch 'upstream/master' into release-4.3.0

testing/test_collection.py

@@ -1206,3 +1206,30 @@ def test_collect_pkg_init_and_file_in_args(testdir):
             "*2 passed in*",
         ]
     )
+
+
+@pytest.mark.skipif(
+    not hasattr(py.path.local, "mksymlinkto"),
+    reason="symlink not available on this platform",
+)
+@pytest.mark.parametrize("use_pkg", (True, False))
+def test_collect_sub_with_symlinks(use_pkg, testdir):
+    sub = testdir.mkdir("sub")
+    if use_pkg:
+        sub.ensure("__init__.py")
+    sub.ensure("test_file.py").write("def test_file(): pass")
+
+    # Create a broken symlink.
+    sub.join("test_broken.py").mksymlinkto("test_doesnotexist.py")
+
+    # Symlink that gets collected.
+    sub.join("test_symlink.py").mksymlinkto("test_file.py")
+
+    result = testdir.runpytest("-v", str(sub))
+    result.stdout.fnmatch_lines(
+        [
+            "sub/test_file.py::test_file PASSED*",
+            "sub/test_symlink.py::test_file PASSED*",
+            "*2 passed in*",
+        ]
+    )