add tests for given to be a fixture

tests/asyncio/test_async_given_returns_value.feature

@@ -0,0 +1,9 @@
+Feature: Async given is a fixture and its value is properly returned
+
+  Scenario: Async given shadows fixture
+    Given i have given that shadows fixture with value of 42
+    Then shadowed fixture value should be equal to 42
+
+  Scenario: Async given is a fixture
+    Given i have given that is a fixture with value of 42
+    Then value of given as a fixture should be equal to 42

tests/asyncio/test_async_given_returns_value.py

@@ -0,0 +1,30 @@
+import pytest
+
+from pytest_bdd import given, parsers, then, scenarios
+
+scenarios("test_async_given_returns_value.feature")
+
+
+@pytest.fixture
+def my_value():
+    return 0
+
+
+@given(parsers.parse("i have given that shadows fixture with value of {value:d}"), target_fixture="my_value")
+async def i_have_given_that_shadows_fixture_with_value_of(value):
+    return value
+
+
+@then(parsers.parse("shadowed fixture value should be equal to {value:d}"))
+async def my_fixture_value_should_be_equal_to(value, my_value):
+    assert value == my_value
+
+
+@given(parsers.parse("i have given that is a fixture with value of {value:d}"))
+async def i_have_given_that_is_a_fixture_with_value_of(value):
+    return value
+
+
+@then(parsers.parse("value of given as a fixture should be equal to {value:d}"))
+async def value_of_given_as_a_fixture_should_be_equal_to(value, i_have_given_that_is_a_fixture_with_value_of):
+    assert value == i_have_given_that_is_a_fixture_with_value_of