build: only run unit tests during Kokoro builds (#929)

Author: olavloite

.kokoro/build.sh

@@ -21,7 +21,7 @@ export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/service-account.json
 export PROJECT_ID=$(cat "${KOKORO_GFILE_DIR}/project-id.json")
 export GOOGLE_CLOUD_PROJECT=$(cat "${KOKORO_GFILE_DIR}/project-id.json")
 
-export RUNNING_SPANNER_BACKEND_TESTS=1
+export RUNNING_SPANNER_BACKEND_TESTS=0
 
 if [[ $KOKORO_JOB_NAME == *"docs"* ]]
 then
@@ -33,7 +33,7 @@ then
     python3 -m pip install --upgrade --quiet nox
     # Generate docs.
     python3 -m nox -s docs docfx
-else
+elif [[ $RUNNING_SPANNER_BACKEND_TESTS == 1 ]]; then
     pip3 install .
     export DJANGO_TESTS_DIR="django_tests_dir"
     mkdir -p $DJANGO_TESTS_DIR && git clone --depth 1 --single-branch --branch "django/stable/2.2.x" https://github.com/googleapis/python-spanner-django.git $DJANGO_TESTS_DIR/django
@@ -57,4 +57,7 @@ else
     fi
 
     python3 ./run_testing_worker.py
+else
+    echo "Running unit tests"
+    nox -s unit
 fi

.kokoro/presubmit/worker_0.cfg

@@ -437,7 +437,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
         # Spanner does not support SELECTing an arbitrary expression that also
         # appears in the GROUP BY clause.
         "annotations.tests.NonAggregateAnnotationTestCase.test_grouping_by_q_expression_annotation",
-        # Tests that expect it to be empty untill saved in db.
+        # Tests that expect it to be empty until saved in db.
         "test_utils.test_testcase.TestDataTests.test_class_attribute_identity",
         "model_fields.test_jsonfield.TestSerialization.test_dumping",
         "model_fields.test_jsonfield.TestSerialization.test_dumping",
@@ -558,6 +558,9 @@ class DatabaseFeatures(BaseDatabaseFeatures):
             "backends.base.test_base.DatabaseWrapperLoggingTests.test_commit_debug_log",
             "backends.base.test_base.DatabaseWrapperLoggingTests.test_rollback_debug_log",
             "backends.base.test_base.MultiDatabaseTests.test_multi_database_init_connection_state_called_once",
+            # Spanner does not support automatic coercion from float64 to int64
+            "lookup.tests.LookupQueryingTests.test_annotate_greater_than_or_equal_float",
+            "lookup.tests.LookupQueryingTests.test_annotate_less_than_float",
         )
 
     if os.environ.get("SPANNER_EMULATOR_HOST", None):