Fixup the DesignDocumentTests::test_get_info and CloudantIndexExceptionTests::test_index_usage_via_query tests for couch3

Author: James1912

tests/unit/design_document_tests.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Copyright (C) 2015, 2018 IBM Corp. All rights reserved.
+# Copyright (C) 2015, 2020 IBM Corp. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -776,7 +776,8 @@ def test_get_info(self):
         info = ddoc_remote.info()
         # Remove variable fields to make equality easier to check
         info['view_index'].pop('signature')
-        info['view_index'].pop('disk_size')
+        if 'disk_size' in info['view_index']:
+            info['view_index'].pop('disk_size')
         # Remove Cloudant/Couch 2 fields if present to allow test to pass on Couch 1.6
         if 'sizes' in info['view_index']:
             info['view_index'].pop('sizes')

tests/unit/index_tests.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Copyright (C) 2015, 2018 IBM Corp. All rights reserved.
+# Copyright (C) 2015, 2020 IBM Corp. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -390,7 +390,7 @@ def test_index_usage_via_query(self):
         self.populate_db_with_documents(100)
         result = self.db.get_query_result(fields=['name', 'age'],
                 selector={'age': {'$eq': 6}}, raw_result=True)
-        self.assertTrue(str(result['warning']).startswith("no matching index found"))
+        self.assertTrue(str(result['warning']).lower().startswith("no matching index found"))
 
 @attr(db='cloudant')
 class TextIndexTests(UnitTestDbBase):