Return proper error message when empty profiles.yml is used for dbt p…

…roject

core/dbt/config/profile.py

@@ -44,6 +44,10 @@
 {profiles_file}/profiles.yml
 """.format(profiles_file=PROFILES_DIR)
 
+EMPTY_PROFILE_MESSAGE = """
+dbt cannot run because profiles.yml is empty for this dbt project.
+"""
+
 
 def read_profile(profiles_dir: str) -> Dict[str, Any]:
  path = os.path.join(profiles_dir, 'profiles.yml')
@@ -52,7 +56,10 @@ def read_profile(profiles_dir: str) -> Dict[str, Any]:
  if os.path.isfile(path):
  try:
  contents = load_file_contents(path, strip=False)
- return load_yaml_text(contents)
+ yaml_content = load_yaml_text(contents)
+ if not yaml_content:
+ raise DbtProfileError(EMPTY_PROFILE_MESSAGE)
+ return yaml_content
  except ValidationException as e:
  msg = INVALID_PROFILE_MESSAGE.format(error_string=e)
  raise ValidationException(msg) from e

test/unit/test_config.py

@@ -211,6 +211,10 @@ def write_profile(self, profile_data=None):
  with open(self.profile_path('profiles.yml'), 'w') as fp:
  yaml.dump(profile_data, fp)
 
+ def write_empty_profile(self):
+ with open(self.profile_path('profiles.yml'), 'w') as fp:
+ yaml.dump('', fp)
+
 
 class TestProfile(BaseConfigTest):
  def setUp(self):
@@ -530,6 +534,12 @@ def test_no_profile(self):
  self.from_args(project_profile_name=None)
  self.assertIn('no profile was specified', str(exc.exception))
 
+ def test_empty_profile(self):
+ self.write_empty_profile()
+ with self.assertRaises(dbt.exceptions.DbtProfileError) as exc:
+ self.from_args()
+ self.assertIn('profiles.yml is empty', str(exc.exception))
+
 
 class TestProject(BaseConfigTest):
  def setUp(self):