diff --git a/Makefile b/Makefile
index 2a3fa0d..8ad096c 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@ TOOLS =\
 
 TESTS =\
 	test-hex\
+	hash/test-sha256\
 
 ifeq (${origin CC}, default)
 CC = g++
diff --git a/test/hash/test-sha256.cpp b/test/hash/test-sha256.cpp
new file mode 100644
index 0000000..6c991aa
--- /dev/null
+++ b/test/hash/test-sha256.cpp
@@ -0,0 +1,24 @@
+#include <base/hash/sha256.hpp>
+#include <base/hex.hpp>
+#include <gtest/gtest.h>
+
+using namespace hash;
+
+TEST(hash, sha256)
+{
+    EXPECT_EQ(hex::encode(sha256(hex::decode("1234"))), "3a103a4e5729ad68c02a678ae39accfbc0ae208096437401b7ceab63cca0622f");
+}
+TEST(hash, sha256_1e4)
+{
+    std::vector<uint8_t> data(32);
+    for(uint64_t i = 0; i < 1e4; i++)
+    {
+        sha256(data);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
\ No newline at end of file