diff --git a/tensorflow/lite/delegates/gpu/metal/kernels/BUILD b/tensorflow/lite/delegates/gpu/metal/kernels/BUILD
index af33900af03..8e8c2a623b3 100644
--- a/tensorflow/lite/delegates/gpu/metal/kernels/BUILD
+++ b/tensorflow/lite/delegates/gpu/metal/kernels/BUILD
@@ -352,6 +352,28 @@ cc_library(
     ],
 )
 
+objc_library(
+    name = "padding_test_lib",
+    testonly = 1,
+    srcs = ["padding_test.mm"],
+    sdk_frameworks = ["XCTest"],
+    deps = [
+        ":padding",
+        ":test_util",
+    ],
+)
+
+ios_unit_test(
+    name = "padding_test",
+    testonly = 1,
+    minimum_os_version = "9.0",
+    tags = [
+        "notap",
+        "tflite_not_portable_android",
+    ],
+    deps = [":padding_test_lib"],
+)
+
 cc_library(
     name = "pooling",
     srcs = ["pooling.cc"],
diff --git a/tensorflow/lite/delegates/gpu/metal/kernels/padding_test.mm b/tensorflow/lite/delegates/gpu/metal/kernels/padding_test.mm
new file mode 100644
index 00000000000..53504f9c00f
--- /dev/null
+++ b/tensorflow/lite/delegates/gpu/metal/kernels/padding_test.mm
@@ -0,0 +1,144 @@
+/* Copyright 2019 The TensorFlow Authors. 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.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "tensorflow/lite/delegates/gpu/metal/kernels/add.h"
+
+#import <XCTest/XCTest.h>
+
+#include <vector>
+
+#include "tensorflow/lite/delegates/gpu/common/operations.h"
+#include "tensorflow/lite/delegates/gpu/common/shape.h"
+#include "tensorflow/lite/delegates/gpu/common/status.h"
+#include "tensorflow/lite/delegates/gpu/common/tensor.h"
+#include "tensorflow/lite/delegates/gpu/common/util.h"
+#include "tensorflow/lite/delegates/gpu/metal/compute_task_descriptor.h"
+#include "tensorflow/lite/delegates/gpu/metal/kernels/test_util.h"
+#include "tensorflow/lite/delegates/gpu/metal/runtime_options.h"
+
+using ::tflite::gpu::PadAttributes;
+using ::tflite::gpu::BHWC;
+using ::tflite::gpu::DataType;
+using ::tflite::gpu::HWC;
+using ::tflite::gpu::metal::CompareVectors;
+using ::tflite::gpu::metal::SingleOpModel;
+using ::tflite::gpu::PaddingContentType;
+using ::tflite::gpu::TensorRef;
+using ::tflite::gpu::OperationType;
+
+@interface PaddingTest : XCTestCase
+- (void)runPadOperation:(const HWC&)prepend
+                 append:(const HWC&)append
+           output_shape:(const BHWC&)output_shape
+               expected:(std::vector<float>&&)expected;
+- (void)runPrepending:(const HWC&)prepend
+         output_shape:(const BHWC&)output_shape
+             expected:(std::vector<float>&&)expected;
+- (void)runAppending:(const HWC&)append
+        output_shape:(const BHWC&)output_shape
+            expected:(std::vector<float>&&)expected;
+@end
+
+@implementation PaddingTest
+- (void)setUp {
+  [super setUp];
+}
+
+- (void)runPadOperation:(const HWC&)prepend
+                 append:(const HWC&)append
+           output_shape:(const BHWC&)output_shape
+               expected:(std::vector<float>&&)expected {
+  TensorRef<BHWC> input;
+  input.type = DataType::FLOAT32;
+  input.ref = 0;
+  input.shape = BHWC(1, 1, 1, 1);
+
+  TensorRef<BHWC> output;
+  output.type = DataType::FLOAT32;
+  output.ref = 1;
+  output.shape = output_shape;
+
+  PadAttributes attr;
+  attr.prepended = prepend;
+  attr.appended = append;
+  attr.type = PaddingContentType::ZEROS;
+
+  SingleOpModel model({ToString(OperationType::PAD), attr}, {input}, {output});
+  XCTAssertTrue(model.PopulateTensor(0, {1.0}));
+  auto status = model.Invoke();
+  XCTAssertTrue(status.ok(), @"%s", status.ToString().c_str());
+  status = CompareVectors(expected, model.GetOutput(0), 1e-6f);
+  XCTAssertTrue(status.ok(), @"%s", status.ToString().c_str());
+}
+
+- (void)runPrepending:(const HWC&)prepend
+         output_shape:(const BHWC&)output_shape
+             expected:(std::vector<float>&&)expected {
+  [self runPadOperation:prepend
+                 append:HWC(0, 0, 0)
+           output_shape:output_shape
+               expected:std::move(expected)];
+}
+
+- (void)runAppending:(const HWC&)append
+        output_shape:(const BHWC&)output_shape
+            expected:(std::vector<float>&&)expected {
+  [self runPadOperation:HWC(0, 0, 0)
+                 append:append
+           output_shape:output_shape
+               expected:std::move(expected)];
+}
+
+- (void)testPadPrependH {
+  [self runPrepending:HWC(1, 0, 0) output_shape:BHWC(1, 2, 1, 1) expected:{0, 1}];
+}
+
+- (void)testPadPrependW {
+  [self runPrepending:HWC(0, 1, 0) output_shape:BHWC(1, 1, 2, 1) expected:{0, 1}];
+}
+
+- (void)testPadPrependC {
+  [self runPrepending:HWC(0, 0, 1) output_shape:BHWC(1, 1, 1, 2) expected:{0, 1}];
+}
+
+- (void)testPadPrependHWC {
+  [self runPrepending:HWC(1, 1, 1) output_shape:BHWC(1, 2, 2, 2) expected:{0, 0, 0, 0, 0, 0, 0, 1}];
+}
+
+- (void)testPadAppendH {
+  [self runAppending:HWC(1, 0, 0) output_shape:BHWC(1, 2, 1, 1) expected:{1, 0}];
+}
+
+- (void)testPadAppendW {
+  [self runAppending:HWC(0, 1, 0) output_shape:BHWC(1, 1, 2, 1) expected:{1, 0}];
+}
+
+- (void)testPadAppendC {
+  [self runAppending:HWC(0, 0, 1) output_shape:BHWC(1, 1, 1, 2) expected:{1, 0}];
+}
+
+- (void)testPadAppendHWC {
+  [self runAppending:HWC(1, 1, 1) output_shape:BHWC(1, 2, 2, 2) expected:{1, 0, 0, 0, 0, 0, 0, 0}];
+}
+
+- (void)testPadPrependHWCAppendHWC {
+  [self runPadOperation:HWC(1, 1, 1)
+                 append:HWC(1, 1, 1)
+           output_shape:BHWC(1, 3, 3, 3)
+               expected:{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
+                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}];
+}
+
+@end