update out_of_range unit test

mace/kernels/opencl/out_of_range_check_test.cc

@@ -9,8 +9,6 @@
 #include "mace/core/tensor.h"
 #include "mace/core/workspace.h"
 #include "mace/kernels/opencl/helper.h"
-#include "mace/utils/tuner.h"
-#include "mace/utils/utils.h"
 
 namespace mace {
 namespace kernels {
@@ -121,6 +119,7 @@ class OutOfRangeCheckTest : public ::testing::Test {
 
 TEST(OutOfRangeCheckTest, RandomTest) {
   static unsigned int seed = time(NULL);
+  for (int round = 0; round < 10; ++round) {
     index_t batch = 11 + rand_r(&seed) % 10;
     index_t height = 12 + rand_r(&seed) % 100;
     index_t width = 13 + rand_r(&seed) % 100;
@@ -146,6 +145,7 @@ TEST(OutOfRangeCheckTest, RandomTest) {
       overflow_image_shape[i] += 1;
     }
     ASSERT_TRUE(BufferToImageOpImpl(buffer, image, overflow_image_shape));
+  }
 }
 
 }  // namespace kernels