add e2e tests for point in time recovery (#1790)

Author: msvechla

Diff for: test/e2e/table.py

@@ -72,6 +72,18 @@ def __call__(self, record: dict) -> bool:
 def ttl_on_attribute_matches(attr_name: str) -> TableMatchFunc:
     return TTLAttributeMatcher(attr_name)
 
+class PITRMatcher:
+    def __init__(self, enabled: bool):
+        self.enabled = enabled
+
+    def __call__(self, record: dict) -> bool:
+        pitr_enabled = get_point_in_time_recovery_enabled(record['TableName'])
+        if pitr_enabled is None:
+            return False
+        return pitr_enabled == self.enabled
+
+def point_in_time_recovery_matches(enabled: bool) -> TableMatchFunc:
+    return PITRMatcher(enabled)
 
 class StreamSpecificationMatcher:
     def __init__(self, enabled: bool):
@@ -230,4 +242,16 @@ def get_time_to_live(table_name):
         resp = c.describe_time_to_live(TableName=table_name)
         return resp['TimeToLiveDescription']
     except c.exceptions.ResourceNotFoundException:
-        return None
+        return None
+
+def get_point_in_time_recovery_enabled(table_name):
+    """Returns whether point in time recovery is enabled for the table with a supplied name.
+
+    If no such Table exists, returns None.
+    """
+    c = boto3.client('dynamodb', region_name=get_region())
+    try:
+        resp = c.describe_continuous_backups(TableName=table_name)
+        return resp['ContinuousBackupsDescription']['PointInTimeRecoveryDescription']['PointInTimeRecoveryStatus'] == 'ENABLED'
+    except c.exceptions.ResourceNotFoundException:
+        return None

Diff for: test/e2e/tests/test_table.py

@@ -265,6 +265,59 @@ def test_enable_ttl(self, table_lsi):
         ttl_status = ttl["TimeToLiveStatus"]
         assert ttl_status in ("ENABLED", "ENABLING")
 
+    def test_enable_point_in_time_recovery(self, table_lsi):
+        (ref, res) = table_lsi
+
+        table_name = res["spec"]["tableName"]
+
+        # Check DynamoDB Table exists
+        assert self.table_exists(table_name)
+
+        # Get CR latest revision
+        cr = k8s.wait_resource_consumed_by_controller(ref)
+
+        # Update PITR
+        updates = {
+            "spec": {
+                "continuousBackups": {
+                    "pointInTimeRecoveryEnabled": True
+                }
+            }
+        }
+
+        # Patch k8s resource
+        k8s.patch_custom_resource(ref, updates)
+
+        table.wait_until(
+            table_name,
+            table.point_in_time_recovery_matches(True),
+        )
+
+        pitr_enabled = table.get_point_in_time_recovery_enabled(table_name)
+        assert pitr_enabled is not None
+        assert pitr_enabled
+
+        # turn off pitr again and ensure it is disabled
+        updates = {
+            "spec": {
+                "continuousBackups": {
+                    "pointInTimeRecoveryEnabled": False
+                }
+            }
+        }
+
+        # Patch k8s resource
+        k8s.patch_custom_resource(ref, updates)
+
+        table.wait_until(
+            table_name,
+            table.point_in_time_recovery_matches(False),
+        )
+
+        pitr_enabled = table.get_point_in_time_recovery_enabled(table_name)
+        assert pitr_enabled is not None
+        assert not pitr_enabled
+
     def test_enable_stream_specification(self, table_lsi):
         (ref, res) = table_lsi
 
@@ -706,4 +759,4 @@ def test_multi_updates(self, table_gsi):
 
         assert latestTable["ProvisionedThroughput"] is not None
         assert latestTable["ProvisionedThroughput"]["ReadCapacityUnits"] == 10
-        assert latestTable["ProvisionedThroughput"]["WriteCapacityUnits"] == 10
+        assert latestTable["ProvisionedThroughput"]["WriteCapacityUnits"] == 10