diff --git a/test/api_test.c b/test/api_test.c
index 02f2a5faa910c3f17e2748329c5f89003524b311..76d50011c4c2e389580f35f51094e931a09b3820 100644
--- a/test/api_test.c
+++ b/test/api_test.c
@@ -90,8 +90,8 @@ static void test_build_from_scratch(void **state)
             }\
         }", json_type_object);
 
-    printf("e->file_obj=%s\n", json_object_get_string(file));
-    printf("e->modify_obj=%s\n", json_object_get_string(jobj));
+    printf("expected json: %s\n", json_object_get_string(file));
+    printf("created json: %s\n", json_object_get_string(jobj));
 
     assert_int_equal(1, json_object_equal(file, jobj));
     json_object_put(jobj);
@@ -109,8 +109,8 @@ static void test_json_set_object(void **state)
 
     json_object_set_by_string(&e->modify_obj, "string", "{\"test2\":\"success\"}", json_type_object);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -130,8 +130,8 @@ static void test_json_set_array(void **state)
 
     json_object_set_by_string(&e->modify_obj, "ints", "[ 1, 2, 3 ]", json_type_array);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -164,8 +164,8 @@ static void test_json_set_multi_types(void **state)
     json_object_set_by_string(&e->modify_obj, "string", "1", json_type_string);
     json_object_set_by_string(&e->modify_obj, "integer", "1", json_type_int);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -195,8 +195,8 @@ static void test_json_set_multi_obj(void **state)
 
     json_object_set_by_string(&e->modify_obj, NULL, "{ \"nested0\": {\"nested1\": {\"integer\": 1}}, \"ints\": [1, 2, 3], \"string\":\"1\", \"integer\": 1}", json_type_object);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -211,8 +211,8 @@ static void test_json_set_string(void **state)
 
     json_object_set_by_string(&e->modify_obj, "string", "1", json_type_string);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -238,8 +238,8 @@ static void test_json_set_overwrite_string(void **state)
 
     json_object_set_by_string(&e->modify_obj, "nested.api", "2", json_type_string);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -254,8 +254,8 @@ static void test_json_set_int(void **state)
 
     json_object_set_by_string(&e->modify_obj, "integer", "1", json_type_int);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -275,8 +275,8 @@ static void test_json_set_int_nested(void **state)
 
     json_object_set_by_string(&e->modify_obj, "nested0.nested1.integer", "1", json_type_int);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -298,8 +298,8 @@ static void test_json_set_array_int(void **state)
     json_object_set_by_string(&e->modify_obj, "array1[-1]", "1", json_type_int);
     json_object_set_by_string(&e->modify_obj, "inner.array[-1]", "1", json_type_int);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -325,8 +325,8 @@ static void test_json_set_array_object(void **state)
     json_object_set_by_string(&e->modify_obj, "array123[0].string", "test", json_type_string);
     json_object_set_by_string(&e->modify_obj, "array123[-1]", "{\"integer\": 1, \"string\":\"test\"}", json_type_object);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -358,8 +358,8 @@ static void test_json_set_array_nested_object(void **state)
     json_object_set_by_string(&e->modify_obj, "array123[-1].nested", "{\"nested1\": {\"integer\": 1}}", json_type_object);
     json_object_set_by_string(&e->modify_obj, "array123[-1]", "{\"nested\": {\"nested1\": {\"integer\": 1}}}", json_type_object);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -396,8 +396,8 @@ static void test_json_set_array_nested_array(void **state)
     json_object_set_by_string(&e->modify_obj, "array123[1][-1]", "6", json_type_int);
     json_object_set_by_string(&e->modify_obj, "array123[1][-1]", "7", json_type_int);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -407,141 +407,141 @@ static void test_json_set_array_nested_array(void **state)
 static void test_json_get_int(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "integer", &tmp);
+    json_object_object_get_ex(e->file_obj, "integer", &j_ptr);
 
     obj = json_object_get_by_string(e->file_obj, "integer");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_string(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "test", &tmp);
+    json_object_object_get_ex(e->file_obj, "test", &j_ptr);
 
     obj = json_object_get_by_string(e->file_obj, "test");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_array(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "simple_array", &tmp);
+    json_object_object_get_ex(e->file_obj, "simple_array", &j_ptr);
 
     obj = json_object_get_by_string(e->file_obj, "simple_array");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_object(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "nested", &tmp);
+    json_object_object_get_ex(e->file_obj, "nested", &j_ptr);
 
     obj = json_object_get_by_string(e->file_obj, "nested");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_nested_object(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "nested", &tmp);
-    json_object_object_get_ex(tmp, "api", &tmp);
+    json_object_object_get_ex(e->file_obj, "nested", &j_ptr);
+    json_object_object_get_ex(j_ptr, "api", &j_ptr);
 
     obj = json_object_get_by_string(e->file_obj, "nested.api");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_array_int(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "simple_array", &tmp);
-    tmp = json_object_array_get_idx(tmp, 1);
+    json_object_object_get_ex(e->file_obj, "simple_array", &j_ptr);
+    j_ptr = json_object_array_get_idx(j_ptr, 1);
     obj = json_object_get_by_string(e->file_obj, "simple_array[1]");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_array_nested_int(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "array", &tmp);
-    tmp = json_object_array_get_idx(tmp, 1);
-    tmp = json_object_array_get_idx(tmp, 2);
+    json_object_object_get_ex(e->file_obj, "array", &j_ptr);
+    j_ptr = json_object_array_get_idx(j_ptr, 1);
+    j_ptr = json_object_array_get_idx(j_ptr, 2);
     obj = json_object_get_by_string(e->file_obj, "array[1][-1]");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_get_object_array_nested_int(void **state)
 {
     struct test_env *e = (struct test_env *) *state;
-    struct json_object *tmp, *obj;
+    struct json_object *j_ptr, *obj;
 
-    json_object_object_get_ex(e->file_obj, "complex_nested", &tmp);
-    json_object_object_get_ex(tmp, "array", &tmp);
-    tmp = json_object_array_get_idx(tmp, 1);
-    json_object_object_get_ex(tmp, "test2", &tmp);
+    json_object_object_get_ex(e->file_obj, "complex_nested", &j_ptr);
+    json_object_object_get_ex(j_ptr, "array", &j_ptr);
+    j_ptr = json_object_array_get_idx(j_ptr, 1);
+    json_object_object_get_ex(j_ptr, "test2", &j_ptr);
     obj = json_object_get_by_string(e->file_obj, "complex_nested.array[1].test2");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("tmp=%s\n", json_object_get_string(tmp));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("getter value: %s\n", json_object_get_string(j_ptr));
 
-    assert_non_null(e->file_obj);
-    assert_non_null(e->modify_obj);
-    assert_int_equal(1, json_object_equal(tmp, obj));
+    assert_non_null(j_ptr);
+    assert_non_null(obj);
+    assert_int_equal(1, json_object_equal(j_ptr, obj));
 }
 
 static void test_json_write_to_file(void **state)
@@ -553,8 +553,8 @@ static void test_json_write_to_file(void **state)
 
     obj = json_object_file_to_obj("cpy.json");
 
-    printf("obj=%s\n", json_object_get_string(obj));
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
+    printf("expected value: %s\n", json_object_get_string(obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(obj);
@@ -573,8 +573,8 @@ static void test_json_set_object_invalid_format(void **state)
 
     json_object_set_by_string(&e->modify_obj, "string", "{\"test2\":\"success\"", json_type_object);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -594,8 +594,8 @@ static void test_json_set_array_invalid_format(void **state)
 
     json_object_set_by_string(&e->modify_obj, "ints", "[ 1, 2 3 ]", json_type_array);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -610,8 +610,8 @@ static void test_json_set_wrong_type_string_to_int(void **state)
 
     json_object_set_by_string(&e->modify_obj, "string", "abc", json_type_int);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->file_obj);
     assert_non_null(e->modify_obj);
@@ -626,8 +626,8 @@ static void test_json_set_wrong_type_int_to_string(void **state)
 
     json_object_set_by_string(&e->modify_obj, "string", "1", json_type_string);
 
-    printf("e->file_obj=%s\n", json_object_get_string(e->file_obj));
-    printf("e->modify_obj=%s\n", json_object_get_string(e->modify_obj));
+    printf("expected json: %s\n", json_object_get_string(e->file_obj));
+    printf("created json: %s\n", json_object_get_string(e->modify_obj));
 
     assert_non_null(e->modify_obj);
     assert_int_not_equal(1, json_object_equal(e->modify_obj, e->file_obj));