Added more bq-tf tests

tests/test_tensorflow_bigquery.py

@@ -9,6 +9,7 @@ class TestTensorflowBigQuery(unittest.TestCase):
  # Some versions of bigquery crashed tensorflow, add this test to make sure that doesn't happen.
  # python -c "from google.cloud import bigquery; import tensorflow". This flow is common because bigquery is imported in kaggle_gcp.py
  # which is loaded at startup.
- def test_addition(self): 
+ def test_matrix_addition(self):
  result = tf.add([1, 2], [3, 4])
  self.assertEqual([2], result.shape)
+ self.assertListEqual([4, 6], [x for x in result.numpy()])