diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 39bb190..1560c0a 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -40,7 +40,7 @@ add_test(NAME codec COMMAND test_codec)
 include_directories(../src/klotski_core)
 include_directories(../src/klotski_core/utils)
 
-set(TEST_FFI_SRC metadata.cc all_cases.cc)
+set(TEST_FFI_SRC metadata.cc codec.cc all_cases.cc)
 list(TRANSFORM TEST_FFI_SRC PREPEND "ffi/")
 add_executable(test_ffi ${TEST_FFI_SRC})
 target_link_libraries(test_ffi ${TEST_DEPS})
diff --git a/test/ffi/codec.cc b/test/ffi/codec.cc
new file mode 100644
index 0000000..11baa63
--- /dev/null
+++ b/test/ffi/codec.cc
@@ -0,0 +1,22 @@
+#include "klotski.h"
+#include "all_cases.h"
+#include "short_code.h"
+#include "gtest/gtest.h"
+
+using klotski::AllCases;
+using klotski::ShortCode;
+using klotski::BasicRanges;
+
+TEST(FFI, codec_warm_up) {
+    // short code normal mode check
+    EXPECT_EQ(is_short_code_available(), BasicRanges::status() == BasicRanges::AVAILABLE);
+    short_code_enable();
+    EXPECT_EQ(is_short_code_available(), true);
+    EXPECT_EQ(is_short_code_available(), BasicRanges::status() == BasicRanges::AVAILABLE);
+
+    // short code fast mode check
+    EXPECT_EQ(is_short_code_available_fast(), AllCases::status() == AllCases::AVAILABLE);
+    short_code_enable_fast();
+    EXPECT_EQ(is_short_code_available_fast(), true);
+    EXPECT_EQ(is_short_code_available_fast(), AllCases::status() == AllCases::AVAILABLE);
+}