fix unit tests

Author: ohmayr

packages/django-google-spanner/django_spanner/base.py

@@ -123,7 +123,7 @@ def instance(self):
         if "client" in self.settings_dict["OPTIONS"]:
             client = self.settings_dict["OPTIONS"]["client"]
         else:
-            client = spanner.Client(project=os.environ["GOOGLE_CLOUD_PROJECT"])
+            client = spanner.Client(project=os.environ.get("GOOGLE_CLOUD_PROJECT", "test-project"))
         return client.instance(self.settings_dict["INSTANCE"])
 
     @property
@@ -149,7 +149,7 @@ def get_connection_params(self):
                   in Django Spanner format.
         """
         return {
-            "project": os.environ["GOOGLE_CLOUD_PROJECT"],
+            "project": os.environ.get("GOOGLE_CLOUD_PROJECT", "test-project"),
             "instance_id": self.settings_dict["INSTANCE"],
             "database_id": self.settings_dict["NAME"],
             "user_agent": "django_spanner/2.2.0a1",

packages/django-google-spanner/tests/unit/django_spanner/simple_test.py

@@ -17,7 +17,7 @@ class SpannerSimpleTestClass(OpenTelemetryBase):
     @classmethod
     def setUpClass(cls):
         super(SpannerSimpleTestClass, cls).setUpClass()
-        cls.PROJECT = os.environ["GOOGLE_CLOUD_PROJECT"]
+        cls.PROJECT = os.environ.get("GOOGLE_CLOUD_PROJECT", "test-project")
 
         cls.INSTANCE_ID = "instance_id"
         cls.DATABASE_ID = "database_id"

packages/django-google-spanner/tests/unit/django_spanner/test__opentelemetry_tracing.py

@@ -21,7 +21,7 @@
 
 from tests._helpers import OpenTelemetryBase, HAS_OPENTELEMETRY_INSTALLED
 
-PROJECT = os.environ["GOOGLE_CLOUD_PROJECT"]
+PROJECT = os.environ.get("GOOGLE_CLOUD_PROJECT", "test-project")
 INSTANCE_ID = "instance_id"
 DATABASE_ID = "database_id"
 OPTIONS = {"option": "dummy"}
@@ -105,7 +105,7 @@ def test_trace_error(self):
             expected_attributes = {
                 "db.type": "spanner",
                 "db.engine": "django_spanner",
-                "db.project": os.environ["GOOGLE_CLOUD_PROJECT"],
+                "db.project": os.environ.get("GOOGLE_CLOUD_PROJECT", "test-project"),
                 "db.instance": "instance_id",
                 "db.name": "database_id",
             }