feat: Update test harness (add assertions) #1467 (#415)

* Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

* fixup! Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

* fixup! Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

* fixup! Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

* fixup! Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

* fixup! Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

* fixup! Update test harness (add assertions) #1467

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

---------

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>
Co-authored-by: Anton Grübel <anton.gruebel@gmail.com>

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "test-harness"]
 	path = test-harness
 	url = https://github.com/open-feature/test-harness.git
+[submodule "spec"]
+	path = spec
+	url = https://github.com/open-feature/spec.git

tests/features/data.py

@@ -69,4 +69,16 @@ IN_MEMORY_FLAGS = {
         variants={"one": "uno", "two": "dos"},
         default_variant="one",
     ),
+    "metadata-flag": InMemoryFlag(
+        state=InMemoryFlag.State.ENABLED,
+        default_variant="on",
+        variants={"on": True, "off": False},
+        context_evaluator=None,
+        flag_metadata={
+            "string": "1.0.2",
+            "integer": 2,
+            "float": 0.1,
+            "boolean": True,
+        },
+    ),
 }

tests/features/steps/flag_steps.py

@@ -0,0 +1,22 @@
+from behave import given, when
+
+
+@given('a {flag_type}-flag with key "{flag_key}" and a default value "{default_value}"')
+def step_impl_flag(context, flag_type: str, flag_key, default_value):
+    context.flag = (flag_type, flag_key, default_value)
+
+
+@when("the flag was evaluated with details")
+def step_impl_evaluation(context):
+    client = context.client
+    flag_type, key, default_value = context.flag
+    if flag_type.lower() == "string":
+        context.evaluation = client.get_string_details(key, default_value)
+    elif flag_type.lower() == "boolean":
+        context.evaluation = client.get_boolean_details(key, default_value)
+    elif flag_type.lower() == "object":
+        context.evaluation = client.get_object_details(key, default_value)
+    elif flag_type.lower() == "float":
+        context.evaluation = client.get_float_details(key, default_value)
+    elif flag_type.lower() == "integer":
+        context.evaluation = client.get_integer_details(key, default_value)

tests/features/steps/metadata_steps.py

@@ -0,0 +1,43 @@
+from behave import given, then
+
+from openfeature.api import get_client, set_provider
+from openfeature.provider.in_memory_provider import InMemoryProvider
+from tests.features.data import IN_MEMORY_FLAGS
+
+
+@given("a stable provider")
+def step_impl_stable_provider(context):
+    set_provider(InMemoryProvider(IN_MEMORY_FLAGS))
+    context.client = get_client()
+
+
+@then('the resolved metadata value "{key}" should be "{value}"')
+def step_impl_check_metadata(context, key, value):
+    assert context.evaluation.flag_metadata[key] == value
+
+
+@then("the resolved metadata is empty")
+def step_impl_empty_metadata(context):
+    assert not context.evaluation.flag_metadata
+
+
+@then("the resolved metadata should contain")
+def step_impl_metadata_contains(context):
+    for row in context.table:
+        key, metadata_type, value = row
+
+        assert context.evaluation.flag_metadata[
+            key
+        ] == convert_value_from_metadata_type(value, metadata_type)
+
+
+def convert_value_from_metadata_type(value, metadata_type):
+    if value == "None":
+        return None
+    if metadata_type.lower() == "boolean":
+        return bool(value)
+    elif metadata_type.lower() == "integer":
+        return int(value)
+    elif metadata_type.lower() == "float":
+        return float(value)
+    return value