1 files changed, 33 insertions, 0 deletions
diff --git a/tensorflow/core/platform/integral_types_test.cc b/tensorflow/core/platform/integral_types_test.cc
new file mode 100644
index 0000000000..067787a9f4
--- /dev/null
+++ b/tensorflow/core/platform/integral_types_test.cc
@@ -0,0 +1,33 @@
+#include "tensorflow/core/platform/port.h"
+
+#include <gtest/gtest.h>
+
+namespace tensorflow {
+namespace {
+
+TEST(IntegralTypes, Basic) {
+  EXPECT_EQ(1, sizeof(int8));
+  EXPECT_EQ(2, sizeof(int16));
+  EXPECT_EQ(4, sizeof(int32));
+  EXPECT_EQ(8, sizeof(int64));
+
+  EXPECT_EQ(1, sizeof(uint8));
+  EXPECT_EQ(2, sizeof(uint16));
+  EXPECT_EQ(4, sizeof(uint32));
+  EXPECT_EQ(8, sizeof(uint64));
+}
+
+TEST(IntegralTypes, MinAndMaxConstants) {
+  EXPECT_EQ(static_cast<uint8>(kint8min), static_cast<uint8>(kint8max) + 1);
+  EXPECT_EQ(static_cast<uint16>(kint16min), static_cast<uint16>(kint16max) + 1);
+  EXPECT_EQ(static_cast<uint32>(kint32min), static_cast<uint32>(kint32max) + 1);
+  EXPECT_EQ(static_cast<uint64>(kint64min), static_cast<uint64>(kint64max) + 1);
+
+  EXPECT_EQ(0, static_cast<uint8>(kuint8max + 1));
+  EXPECT_EQ(0, static_cast<uint16>(kuint16max + 1));
+  EXPECT_EQ(0, static_cast<uint32>(kuint32max + 1));
+  EXPECT_EQ(0, static_cast<uint64>(kuint64max + 1));
+}
+
+}  // namespace
+}  // namespace tensorflow