Get some pytest fixtures working with some side effects

test/completion/conftest.py

@@ -0,0 +1,17 @@
+# Exists only for completion/pytest.py
+
+import pytest
+
+
+@pytest.fixture()
+def my_other_conftest_fixture():
+    return 1.0
+
+
+@pytest.fixture()
+def my_conftest_fixture(my_other_conftest_fixture):
+    return my_other_conftest_fixture
+
+
+def my_not_existing_fixture():
+    return 3  # Just a normal function

test/completion/pytest.py

@@ -0,0 +1,45 @@
+# python > 2
+import pytest
+from pytest import fixture
+
+
+@pytest.fixture(scope='module')
+def my_fixture() -> str:
+    pass
+
+
+@fixture
+def my_simple_fixture():
+    return 1
+
+
+# -----------------
+# goto/infer
+# -----------------
+
+#! 18 'def my_conftest_fixture'
+def test_x(my_conftest_fixture, my_fixture, my_not_existing_fixture):
+    #? str()
+    my_fixture
+    #?
+    my_not_existing_fixture
+    #? float()
+    return my_conftest_fixture
+
+#? 18 float()
+def test_x(my_conftest_fixture, my_fixture):
+    pass
+
+# -----------------
+# completion
+# -----------------
+
+#? 34 ['my_fixture']
+def test_x(my_simple_fixture, my_fixture):
+    return
+#? 18 ['my_simple_fixture']
+def test_x(my_simple_fixture):
+    return
+#? 18 ['my_conftest_fixture']
+def test_x(my_conftest_fixture):
+    return