Add test to verify that all EIPs are bound to instances. (#331)

aws/ec2/helpers.py

@@ -269,6 +269,11 @@ def ec2_security_group_test_id(ec2_security_group):
     return "{0[GroupId]} {0[GroupName]}".format(ec2_security_group)
 
 
+def ec2_address_id(ec2_address):
+    """Format an Elastic IP address."""
+    return ec2_address["PublicIp"]
+
+
 def is_ebs_volume_encrypted(ebs):
     """
     Checks the EBS volume 'Encrypted' value.

aws/ec2/resources.py

@@ -102,6 +102,16 @@ def ec2_vpcs():
     )
 
 
+def ec2_addresses():
+    "https://botocore.readthedocs.io/en/latest/reference/services/ec2.html#EC2.Client.describe_addresses"
+    return (
+        botocore_client.get("ec2", "describe_addresses", [], {})
+        .extract_key("Addresses")
+        .flatten()
+        .values()
+    )
+
+
 def ec2_security_groups_with_in_use_flag():
     """Returns security groups with an additional "InUse" key,
     which is True if it is associated with at least one resource.

aws/ec2/test_ec2_all_eips_bound.py

@@ -0,0 +1,11 @@
+import pytest
+
+from aws.ec2.helpers import ec2_address_id
+from aws.ec2.resources import ec2_addresses
+
+
+@pytest.mark.ec2
+@pytest.mark.parametrize("ec2_address", ec2_addresses(), ids=ec2_address_id)
+def test_ec2_all_eips_bound(ec2_address):
+    """Checks whether all EIPs are bound to instances."""
+    assert ec2_address.get("InstanceId"), "No associated instance."