Account for s3 paths not having a trailing slash

awscli/customizations/s3/s3.py

@@ -639,13 +639,25 @@ def add_paths(self, paths):
         the destination always have some value.
         """
         self.check_path_type(paths)
+        self._normalize_s3_trailing_slash(paths)
         src_path = paths[0]
         self.parameters['src'] = src_path
         if len(paths) == 2:
             self.parameters['dest'] = paths[1]
         elif len(paths) == 1:
             self.parameters['dest'] = paths[0]
 
+    def _normalize_s3_trailing_slash(self, paths):
+        for i, path in enumerate(paths):
+            if path.startswith('s3://'):
+                bucket, key = find_bucket_key(path[5:])
+                if not key and not path.endswith('/'):
+                    # If only a bucket was specified, we need
+                    # to normalize the path and ensure it ends
+                    # with a '/', s3://bucket -> s3://bucket/
+                    path += '/'
+                    paths[i] = path
+
     def _verify_bucket_exists(self, bucket_name):
         session = self.session
         service = session.get_service('s3')

tests/integration/customizations/s3/test_plugin.py

@@ -253,6 +253,23 @@ def test_cp_to_and_from_s3(self):
         with open(full_path, 'r') as f:
             self.assertEqual(f.read(), 'this is foo.txt')
 
+    def test_cp_without_trailing_slash(self):
+        # There's a unit test for this, but we still want to verify this
+        # with an integration test.
+        bucket_name = self.create_bucket()
+
+        # copy file into bucket.
+        foo_txt = self.files.create_file('foo.txt', 'this is foo.txt')
+        # Note that the destination has no trailing slash.
+        p = aws('s3 cp %s s3://%s' % (foo_txt, bucket_name))
+        self.assert_no_errors(p)
+
+        # Make sure object is in bucket.
+        self.assertTrue(self.key_exists(bucket_name, key_name='foo.txt'))
+        self.assertEqual(
+            self.get_key_contents(bucket_name, key_name='foo.txt'),
+            'this is foo.txt')
+
     def test_cp_s3_s3_multipart(self):
         from_bucket = self.create_bucket()
         to_bucket = self.create_bucket()

tests/unit/customizations/s3/test_cp_command.py

@@ -39,6 +39,30 @@ def test_operations_used_in_upload(self):
         self.assertEqual(len(self.operations_called), 1, self.operations_called)
         self.assertEqual(self.operations_called[0][0].name, 'PutObject')
 
+    def test_key_name_added_when_only_bucket_provided(self):
+        full_path = self.files.create_file('foo.txt', 'mycontent')
+        cmdline = '%s %s s3://bucket/' % (self.prefix, full_path)
+        self.parsed_responses = [{'ETag': '"c8afdb36c52cf4727836669019e69222"'}]
+        self.run_cmd(cmdline, expected_rc=0)
+        # The only operation we should have called is PutObject.
+        self.assertEqual(len(self.operations_called), 1, self.operations_called)
+        self.assertEqual(self.operations_called[0][0].name, 'PutObject')
+        self.assertEqual(self.operations_called[0][1]['key'], 'foo.txt')
+        self.assertEqual(self.operations_called[0][1]['bucket'], 'bucket')
+
+    def test_trailing_slash_appended(self):
+        full_path = self.files.create_file('foo.txt', 'mycontent')
+        # Here we're saying s3://bucket instead of s3://bucket/
+        # This should still work the same as if we added the trailing slash.
+        cmdline = '%s %s s3://bucket' % (self.prefix, full_path)
+        self.parsed_responses = [{'ETag': '"c8afdb36c52cf4727836669019e69222"'}]
+        self.run_cmd(cmdline, expected_rc=0)
+        # The only operation we should have called is PutObject.
+        self.assertEqual(len(self.operations_called), 1, self.operations_called)
+        self.assertEqual(self.operations_called[0][0].name, 'PutObject')
+        self.assertEqual(self.operations_called[0][1]['key'], 'foo.txt')
+        self.assertEqual(self.operations_called[0][1]['bucket'], 'bucket')
+
     def test_operations_used_in_download_file(self):
         self.parsed_responses = [
             {"ContentLength": "100", "LastModified": "00:00:00Z"},