Add organizations.untag_resource

tests/test_organizations/test_organizations_boto3.py

@@ -676,3 +676,40 @@ def test_list_tags_for_resource_errors():
     ex.response["Error"]["Message"].should.contain(
         "You provided a value that does not match the required pattern."
     )
+
+
+@mock_organizations
+def test_untag_resource():
+    client = boto3.client("organizations", region_name="us-east-1")
+    client.create_organization(FeatureSet="ALL")
+    account_id = client.create_account(AccountName=mockname, Email=mockemail)[
+        "CreateAccountStatus"
+    ]["AccountId"]
+    client.tag_resource(ResourceId=account_id, Tags=[{"Key": "key", "Value": "value"}])
+    response = client.list_tags_for_resource(ResourceId=account_id)
+    response["Tags"].should.equal([{"Key": "key", "Value": "value"}])
+
+    # removing a non existing tag should not raise any error
+    client.untag_resource(ResourceId=account_id, TagKeys=["not-existing"])
+    response = client.list_tags_for_resource(ResourceId=account_id)
+    response["Tags"].should.equal([{"Key": "key", "Value": "value"}])
+
+    client.untag_resource(ResourceId=account_id, TagKeys=["key"])
+    response = client.list_tags_for_resource(ResourceId=account_id)
+    response["Tags"].should.have.length_of(0)
+
+
+@mock_organizations
+def test_untag_resource_errors():
+    client = boto3.client("organizations", region_name="us-east-1")
+    client.create_organization(FeatureSet="ALL")
+
+    with assert_raises(ClientError) as e:
+        client.untag_resource(ResourceId="000000000000", TagKeys=["key"])
+    ex = e.exception
+    ex.operation_name.should.equal("UntagResource")
+    ex.response["Error"]["Code"].should.equal("400")
+    ex.response["Error"]["Message"].should.contain("InvalidInputException")
+    ex.response["Error"]["Message"].should.contain(
+        "You provided a value that does not match the required pattern."
+    )