Cleanup bigtable python examples [(#2692)](GoogleCloudPlatform/python-docs-samples#2692)

* Cleanup bigtable python:
Use new row types for mutations
Update bigtable version in requirements
Delete table after tests

* Change bigtable cluster variable to bigtable instance for consistency
Create and delete quickstart table during test

* Fixing step size for metric scaler
Create unique tables for quickstart tests

* Creating fixtures for quickstart tests
Fixing hb quickstart test output

* Fix quickstart extra delete table
Update happybase to use direct row

* Use clearer instance names for tests
Create unique instances for metric scaler tests

* Linting

* remove core dep

Co-authored-by: Leah E. Cole <[email protected]>

Author: billyjacobson

samples/quickstart/main_test.py

@@ -13,16 +13,41 @@
 # limitations under the License.
 
 import os
+import random
+import pytest
 
 from main import main
+from google.cloud import bigtable
 
 PROJECT = os.environ['GCLOUD_PROJECT']
-BIGTABLE_CLUSTER = os.environ['BIGTABLE_CLUSTER']
-TABLE_NAME = 'my-table'
+BIGTABLE_INSTANCE = os.environ['BIGTABLE_INSTANCE']
+TABLE_ID_FORMAT = 'quickstart-test-{}'
+TABLE_ID_RANGE = 10000
 
 
-def test_main(capsys):
-    main(PROJECT, BIGTABLE_CLUSTER, TABLE_NAME)
+@pytest.fixture()
+def table():
+    table_id = TABLE_ID_FORMAT.format(
+        random.randrange(TABLE_ID_RANGE))
+    client = bigtable.Client(project=PROJECT, admin=True)
+    instance = client.instance(BIGTABLE_INSTANCE)
+    table = instance.table(table_id)
+    column_family_id = 'cf1'
+    column_families = {column_family_id: None}
+    table.create(column_families=column_families)
+
+    row = table.direct_row("r1")
+    row.set_cell(column_family_id, "c1", "test-value")
+    row.commit()
+
+    yield table_id
+
+    table.delete()
+
+
+def test_main(capsys, table):
+    table_id = table
+    main(PROJECT, BIGTABLE_INSTANCE, table_id)
 
     out, _ = capsys.readouterr()
     assert 'Row key: r1\nData: test-value\n' in out

samples/quickstart/requirements.txt

@@ -1,2 +1 @@
-google-cloud-bigtable==1.0.0
-google-cloud-core==1.0.3
+google-cloud-bigtable==1.2.1