diff --git a/quantum/serial_link/tests/frame_validator_tests.c b/quantum/serial_link/tests/frame_validator_tests.cpp
similarity index 52%
rename from quantum/serial_link/tests/frame_validator_tests.c
rename to quantum/serial_link/tests/frame_validator_tests.cpp
index d20947e2c..9223af83b 100644
--- a/quantum/serial_link/tests/frame_validator_tests.c
+++ b/quantum/serial_link/tests/frame_validator_tests.cpp
@@ -22,24 +22,47 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */
 
-#include <cgreen/cgreen.h>
-#include <cgreen/mocks.h>
-#include "serial_link/protocol/frame_validator.c"
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+extern "C" {
+#include "serial_link/protocol/frame_validator.h"
+}
 
+using testing::_;
+using testing::ElementsAreArray;
+using testing::Args;
+
+class FrameValidator : public testing::Test {
+public:
+    FrameValidator() {
+        Instance = this;
+    }
+
+    ~FrameValidator() {
+        Instance = nullptr;
+    }
+
+    MOCK_METHOD3(route_incoming_frame, void (uint8_t link, uint8_t* data, uint16_t size));
+    MOCK_METHOD3(byte_stuffer_send_frame, void (uint8_t link, uint8_t* data, uint16_t size));
+
+    static FrameValidator* Instance;
+};
+
+FrameValidator* FrameValidator::Instance = nullptr;
+
+extern "C" {
 void route_incoming_frame(uint8_t link, uint8_t* data, uint16_t size) {
-    mock(data, size);
+    FrameValidator::Instance->route_incoming_frame(link, data, size);
 }
 
 void byte_stuffer_send_frame(uint8_t link, uint8_t* data, uint16_t size) {
-    mock(data, size);
+    FrameValidator::Instance->byte_stuffer_send_frame(link, data, size);
+}
 }
 
-Describe(FrameValidator);
-BeforeEach(FrameValidator) {}
-AfterEach(FrameValidator) {}
-
-Ensure(FrameValidator, doesnt_validate_frames_under_5_bytes) {
-    never_expect(route_incoming_frame);
+TEST_F(FrameValidator, doesnt_validate_frames_under_5_bytes) {
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .Times(0);
     uint8_t data[] = {1, 2};
     validator_recv_frame(0, 0, 1);
     validator_recv_frame(0, data, 2);
@@ -47,55 +70,46 @@ Ensure(FrameValidator, doesnt_validate_frames_under_5_bytes) {
     validator_recv_frame(0, data, 4);
 }
 
-Ensure(FrameValidator, validates_one_byte_frame_with_correct_crc) {
+TEST_F(FrameValidator, validates_one_byte_frame_with_correct_crc) {
     uint8_t data[] = {0x44, 0x04, 0x6A, 0xB3, 0xA3};
-    expect(route_incoming_frame,
-        when(size, is_equal_to(1)),
-        when(data, is_equal_to_contents_of(data, 1))
-    );
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data, 1)));
     validator_recv_frame(0, data, 5);
 }
 
-Ensure(FrameValidator, does_not_validate_one_byte_frame_with_incorrect_crc) {
+TEST_F(FrameValidator, does_not_validate_one_byte_frame_with_incorrect_crc) {
     uint8_t data[] = {0x44, 0, 0, 0, 0};
-    never_expect(route_incoming_frame);
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .Times(0);
     validator_recv_frame(1, data, 5);
 }
 
-Ensure(FrameValidator, validates_four_byte_frame_with_correct_crc) {
+TEST_F(FrameValidator, validates_four_byte_frame_with_correct_crc) {
     uint8_t data[] = {0x44, 0x10, 0xFF, 0x00, 0x74, 0x4E, 0x30, 0xBA};
-    expect(route_incoming_frame,
-        when(size, is_equal_to(4)),
-        when(data, is_equal_to_contents_of(data, 4))
-    );
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data, 4)));
     validator_recv_frame(1, data, 8);
 }
 
-Ensure(FrameValidator, validates_five_byte_frame_with_correct_crc) {
+TEST_F(FrameValidator, validates_five_byte_frame_with_correct_crc) {
     uint8_t data[] = {1, 2, 3, 4, 5, 0xF4, 0x99, 0x0B, 0x47};
-    expect(route_incoming_frame,
-        when(size, is_equal_to(5)),
-        when(data, is_equal_to_contents_of(data, 5))
-    );
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data, 5)));
     validator_recv_frame(0, data, 9);
 }
 
-Ensure(FrameValidator, sends_one_byte_with_correct_crc) {
+TEST_F(FrameValidator, sends_one_byte_with_correct_crc) {
     uint8_t original[] = {0x44, 0, 0, 0, 0};
     uint8_t expected[] = {0x44, 0x04, 0x6A, 0xB3, 0xA3};
-    expect(byte_stuffer_send_frame,
-        when(size, is_equal_to(sizeof(expected))),
-        when(data, is_equal_to_contents_of(expected, sizeof(expected)))
-    );
+    EXPECT_CALL(*this, byte_stuffer_send_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
     validator_send_frame(0, original, 1);
 }
 
-Ensure(FrameValidator, sends_five_bytes_with_correct_crc) {
+TEST_F(FrameValidator, sends_five_bytes_with_correct_crc) {
     uint8_t original[] = {1, 2, 3, 4, 5, 0, 0, 0, 0};
     uint8_t expected[] = {1, 2, 3, 4, 5, 0xF4, 0x99, 0x0B, 0x47};
-    expect(byte_stuffer_send_frame,
-        when(size, is_equal_to(sizeof(expected))),
-        when(data, is_equal_to_contents_of(expected, sizeof(expected)))
-    );
+    EXPECT_CALL(*this, byte_stuffer_send_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
     validator_send_frame(0, original, 5);
 }
diff --git a/quantum/serial_link/tests/rules.mk b/quantum/serial_link/tests/rules.mk
index 7d0d6c0d0..7f2a8f457 100644
--- a/quantum/serial_link/tests/rules.mk
+++ b/quantum/serial_link/tests/rules.mk
@@ -5,5 +5,9 @@ serial_link_byte_stuffer_SRC :=\
 serial_link_frame_router_SRC := \
 	$(SERIAL_PATH)/tests/frame_router_tests.cpp \
 	$(SERIAL_PATH)/protocol/byte_stuffer.c \
-    $(SERIAL_PATH)/protocol/frame_validator.c \
-	$(SERIAL_PATH)/protocol/frame_router.c
\ No newline at end of file
+	$(SERIAL_PATH)/protocol/frame_validator.c \
+	$(SERIAL_PATH)/protocol/frame_router.c
+
+serial_link_frame_validator_SRC := \
+	$(SERIAL_PATH)/tests/frame_validator_tests.cpp \
+	$(SERIAL_PATH)/protocol/frame_validator.c 
\ No newline at end of file