added tests

tests/CMakeLists.txt

@@ -2,3 +2,4 @@
 #
 add_subdirectory(led_driver)
 add_subdirectory(simple_test)
+add_subdirectory(gy521_driver)

tests/gy521_driver/CMakeLists.txt

@@ -0,0 +1,13 @@
+# The gy521_driver module tests
+list(APPEND TEST_LIBS "${CMOCKA_LIBRARIES}")
+list(APPEND TEST_LIBS gy521_driver)
+
+list(APPEND TEST_DIRS "${CMOCKA_INCLUDE_DIRS}")
+list(APPEND TEST_DIRS "${MyProject_SOURCE_DIR}/src")
+
+add_cmocka_test(test_gy521_driver
+                SOURCES test_gy521_driver.c
+                COMPILE_OPTIONS ${DEFAULT_C_COMPILE_FLAGS}
+                LINK_LIBRARIES "${TEST_LIBS}")
+add_cmocka_test_environment(test_gy521_driver)
+target_include_directories(test_gy521_driver PUBLIC "${TEST_DIRS}")

tests/gy521_driver/test_gy521_driver.c

@@ -0,0 +1,50 @@
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <cmocka.h>
+#include "gy521_driver.h"
+
+
+/* A test case that does nothing and succeeds. */
+static void null_test_success(void **state) {
+    (void) state; /* unused */
+}
+
+/* Fake Object for TWI_TX*/
+void fake_twi_tx(uint8_t slave_addr, uint8_t *data, uint8_t size)
+{
+
+}
+
+/* Tests the donothing function */ 
+static void test_gy521_init(void **state) { 
+
+    _Bool result = init_gy521(0); 
+    assert_false(result);
+
+    result = init_gy521(1);
+    assert_false(result);
+
+    result = init_gy521((uint8_t) TWI_GY521_ADDR1);
+    assert_true(result);
+ 
+}
+
+static void test_gy521_module_methods(void **state) {
+    gy521_module *module = malloc(sizeof(gy521_module));
+    assert_true(module_test(*module)); 
+}
+
+
+
+int main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test(null_test_success),
+        cmocka_unit_test(test_gy521_init),
+        cmocka_unit_test(test_gy521_module_methods),
+    }; 
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}