Tests for environment variables getters.

api/replay/features/replay.feature

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+Feature: The environment variables getters
+
+    Scenario: Testing every environment variable getter
+        Given the Replay client
+        When each one of the getters is called
+        Then all of the returns must be either of the type string or the type None

api/replay/features/steps/steps.py

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+from behave import *
+from cli import Replay
+
+# ============================= ENVIRONMENT VARIABLES GETTERS =============================
+@given(u'the Replay client')
+def step_impl (context):
+    context.client = Replay ()
+
+@when(u'each one of the getters is called')
+def step_impl(context):
+    context.returns = {context.client.replay_env_queue_id(): "context.client.replay_env_queue_id()", context.client.replay_env_alias(): "context.client.replay_env_alias()", context.client.replay_env_feature_dir(): "context.client.replay_env_feature_dir()", context.client.replay_env_root(): "context.client.replay_env_root()", context.client.replay_env_addr(): "context.client.replay_env_addr()", context.client.replay_env_home_dir(): "context.client.replay_env_home_dir()", context.client.replay_env_repo(): "context.client.replay_env_repo()", context.client.replay_env_ver(): "context.client.replay_env_ver()", context.client.replay_env_repo_dir(): "context.client.replay_env_repo_dir()", context.client.replay_env_data_dir(): "context.client.replay_env_data_dir()", context.client.replay_env_instance_alias(): "context.client.replay_env_instance_alias()", context.client.replay_env_api_key(): "context.client.replay_env_api_key()"}
+
+@then(u'all of the returns must be either of the type string or the type None')
+def step_impl(context):
+    for ret in context.returns.keys():
+        assert ( type(ret) == type(None) or type(ret) == type("") ), f'Something went wrong with the {context.returns[ret]} variable getter.'