parse vars in unit test utils (#313)

* test against feature/click-cli core branch

* fix unit tests

* remove tests/integration tests

* done testing against feature branch

* test feature branch

* revert requs to use main branch

---------

Co-authored-by: Chenyu Li <chenyu.li@dbtlabs.com>
Co-authored-by: Ian Knox <ian.knox@dbtlabs.com>

tests/unit/utils.py

@@ -45,6 +45,12 @@ def profile_from_dict(profile, profile_name, cli_vars='{}'):
         cli_vars = parse_cli_vars(cli_vars)
 
     renderer = ProfileRenderer(cli_vars)
+
+    # in order to call dbt's internal profile rendering, we need to set the
+    # flags global. This is a bit of a hack, but it's the best way to do it.
+    from dbt.flags import set_from_args
+    from argparse import Namespace
+    set_from_args(Namespace(), None)
     return Profile.from_raw_profile_info(
         profile,
         profile_name,
@@ -73,8 +79,12 @@ def project_from_dict(project, profile, packages=None, selectors=None, cli_vars=
 
 def config_from_parts_or_dicts(project, profile, packages=None, selectors=None, cli_vars='{}'):
     from dbt.config import Project, Profile, RuntimeConfig
+    from dbt.config.utils import parse_cli_vars
     from copy import deepcopy
 
+    if not isinstance(cli_vars, dict):
+        cli_vars = parse_cli_vars(cli_vars)
+
     if isinstance(project, Project):
         profile_name = project.profile_name
     else: