Add tests for 'test_get_parent_dir_with_file' and 'test_is_potential_project'

test/test_api/test_project.py

@@ -6,6 +6,7 @@ import pytest
 from ..helpers import get_example_dir, set_cwd, root_dir, test_dir
 from jedi import Interpreter
 from jedi.api import Project, get_default_project
+from jedi.api.project import _is_potential_project, _CONTAINS_POTENTIAL_PROJECT
 
 
 def test_django_default_project(Script):
@@ -160,3 +161,21 @@ def test_complete_search(Script, string, completions, all_scopes):
     project = Project(test_dir)
     defs = project.complete_search(string, all_scopes=all_scopes)
     assert [d.complete for d in defs] == completions
+
+
+@pytest.mark.parametrize(
+    'path,expected', [
+        (Path(__file__).parents[2], True), # The path of the project
+        (Path(__file__).parents[1], False), # The path of the tests, not a project
+        (Path.home(), None)
+    ]
+)
+def test_is_potential_project(path, expected):
+
+    if expected is None:
+        try:
+            expected = _CONTAINS_POTENTIAL_PROJECT in os.listdir(path)
+        except OSError:
+            expected = False
+
+    assert _is_potential_project(path) == expected