From 5988e5efaa07e4f6cde6b9a92d72f6e636f81677 Mon Sep 17 00:00:00 2001
From: usmangani1 <sgosman_chem@yahoo.com>
Date: Mon, 15 Jun 2020 15:02:43 +0530
Subject: [PATCH] EC2 : Fix - modified volume type in ec2 describe images.
 (#3074)

* "modified volume type in ec2 describe images"

* removed unncessary comments

* Linting

Co-authored-by: usmankb <usman@krazybee.com>
Co-authored-by: Bert Blommers <info@bertblommers.nl>
---
 moto/ec2/responses/amis.py  | 2 +-
 tests/test_ec2/test_amis.py | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/moto/ec2/responses/amis.py b/moto/ec2/responses/amis.py
index 6736a7175..0e70182bb 100755
--- a/moto/ec2/responses/amis.py
+++ b/moto/ec2/responses/amis.py
@@ -125,7 +125,7 @@ DESCRIBE_IMAGES_RESPONSE = """<DescribeImagesResponse xmlns="http://ec2.amazonaw
                 <snapshotId>{{ image.ebs_snapshot.id }}</snapshotId>
                 <volumeSize>15</volumeSize>
                 <deleteOnTermination>false</deleteOnTermination>
-                <volumeType>{{ image.root_device_type }}</volumeType>
+                <volumeType>standard</volumeType>
               </ebs>
             </item>
           </blockDeviceMapping>
diff --git a/tests/test_ec2/test_amis.py b/tests/test_ec2/test_amis.py
index ad432bb78..275b12905 100644
--- a/tests/test_ec2/test_amis.py
+++ b/tests/test_ec2/test_amis.py
@@ -843,7 +843,11 @@ def test_ami_snapshots_have_correct_owner():
         ]
         existing_snapshot_ids = owner_id_to_snapshot_ids.get(owner_id, [])
         owner_id_to_snapshot_ids[owner_id] = existing_snapshot_ids + snapshot_ids
-
+        # adding an assertion to volumeType
+        assert (
+            image.get("BlockDeviceMappings", {})[0].get("Ebs", {}).get("VolumeType")
+            == "standard"
+        )
     for owner_id in owner_id_to_snapshot_ids:
         snapshots_rseponse = ec2_client.describe_snapshots(
             SnapshotIds=owner_id_to_snapshot_ids[owner_id]