Fix 3605

changelog/3605.bugfix.rst

@@ -0,0 +1 @@
+no longer ValueError when using the ``get_marker`` api.

src/_pytest/mark/structures.py

@@ -225,9 +225,18 @@ def get_unpacked_marks(obj):
     obtain the unpacked marks that are stored on an object
     """
     mark_list = getattr(obj, "pytestmark", [])
-
     if not isinstance(mark_list, list):
         mark_list = [mark_list]
+    return normalize_mark_list(mark_list)
+
+
+def normalize_mark_list(mark_list):
+    """
+    normalizes marker decorating helpers to mark objects
+
+    :type mark_list: List[Union[Mark, Markdecorator]]
+    :rtype: List[Mark]
+    """
     return [getattr(mark, "mark", mark) for mark in mark_list]  # unpack MarkDecorator
 
 

src/_pytest/python.py

@@ -39,7 +39,11 @@
     get_default_arg_names,
 )
 from _pytest.outcomes import fail
-from _pytest.mark.structures import transfer_markers, get_unpacked_marks
+from _pytest.mark.structures import (
+    transfer_markers,
+    get_unpacked_marks,
+    normalize_mark_list,
+)
 
 
 # relative paths that we use to filter traceback entries from appearing to the user;
@@ -773,7 +777,7 @@ def setmulti2(self, valtypes, argnames, valset, id, marks, scopenum, param_index
             self.indices[arg] = param_index
             self._arg2scopenum[arg] = scopenum
         self._idlist.append(id)
-        self.marks.extend(marks)
+        self.marks.extend(normalize_mark_list(marks))
 
     def setall(self, funcargs, id, param):
         for x in funcargs:
@@ -1254,7 +1258,7 @@ def __init__(
                 # feel free to cry, this was broken for years before
                 # and keywords cant fix it per design
                 self.keywords[mark.name] = mark
-            self.own_markers.extend(callspec.marks)
+            self.own_markers.extend(normalize_mark_list(callspec.marks))
         if keywords:
             self.keywords.update(keywords)
 

testing/test_mark.py

@@ -1130,3 +1130,42 @@ def test_addmarker_getmarker():
     node.add_marker("b")
     node.get_marker("a").combined
     node.get_marker("b").combined
+
+
+@pytest.mark.issue("https://github.com/pytest-dev/pytest/issues/3605")
+@pytest.mark.filterwarnings("ignore")
+def test_markers_from_parametrize(testdir):
+    testdir.makepyfile(
+        """
+        from __future__ import print_function
+        import pytest
+
+        first_custom_mark = pytest.mark.custom_marker
+        custom_mark = pytest.mark.custom_mark
+        @pytest.fixture(autouse=True)
+        def trigger(request):
+            custom_mark =request.node.get_marker('custom_mark')
+            print("Custom mark %s" % custom_mark)
+
+        @custom_mark("custom mark non parametrized")
+        def test_custom_mark_non_parametrized():
+            print("Hey from test")
+
+        @pytest.mark.parametrize(
+            "obj_type",
+            [
+                first_custom_mark("first custom mark")("template"),
+                pytest.param( # Think this should be recommended way?
+                    "disk",
+                    marks=custom_mark('custom mark1')
+                ),
+                custom_mark("custom mark2")("vm"),  # Tried also this
+            ]
+        )
+        def test_custom_mark_parametrized(obj_type):
+            print("obj_type is:", obj_type)
+    """
+    )
+
+    result = testdir.runpytest()
+    result.assert_outcomes(passed=4)