Fix default HealthCheckGracePeriod

tests/test_autoscaling/test_autoscaling_boto3.py

@@ -0,0 +1,41 @@
+from __future__ import unicode_literals
+import boto3
+import sure  # noqa
+
+from moto import mock_autoscaling
+
+
+@mock_autoscaling
+def test_create_autoscaling_group():
+        client = boto3.client('autoscaling')
+        _ = client.create_launch_configuration(
+            LaunchConfigurationName='test_launch_configuration'
+        )
+        response = client.create_auto_scaling_group(
+            AutoScalingGroupName='test_asg',
+            LaunchConfigurationName='test_launch_configuration',
+            MinSize=0,
+            MaxSize=20,
+            DesiredCapacity=5
+        )
+        response['ResponseMetadata']['HTTPStatusCode'].should.equal(200)
+
+
+@mock_autoscaling
+def test_describe_autoscaling_groups():
+        client = boto3.client('autoscaling')
+        _ = client.create_launch_configuration(
+            LaunchConfigurationName='test_launch_configuration'
+        )
+        _ = client.create_auto_scaling_group(
+            AutoScalingGroupName='test_asg',
+            LaunchConfigurationName='test_launch_configuration',
+            MinSize=0,
+            MaxSize=20,
+            DesiredCapacity=5
+        )
+        response = client.describe_auto_scaling_groups(
+            AutoScalingGroupNames=["test_asg"]
+        )
+        response['ResponseMetadata']['HTTPStatusCode'].should.equal(200)
+        response['AutoScalingGroups'][0]['AutoScalingGroupName'].should.equal('test_asg')