diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 7551094..2d1d056 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -2,9 +2,13 @@ file(GLOB TEST_SOURCE_FILES test_*.c)
 
 if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
     include_directories("/opt/homebrew/include")
+    link_directories("/opt/homebrew/lib")
+    list(REMOVE_ITEM TEST_SOURCE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/test_ringbuf.c)
+else()
+    target_link_libraries(rt)
 endif()
 add_executable(test_runner ${TEST_SOURCE_FILES})
-target_link_libraries(test_runner check ucore rt)
+target_link_libraries(test_runner check ucore)
 
 add_custom_target(runtest COMMAND test_runner
                        DEPENDS test_runner
diff --git a/test/a.out b/test/a.out
new file mode 100755
index 0000000..32656cf
Binary files /dev/null and b/test/a.out differ
diff --git a/test/test_runner.c b/test/test_runner.c
index fab2441..86aeba1 100644
--- a/test/test_runner.c
+++ b/test/test_runner.c
@@ -66,7 +66,9 @@ static suite_func suites[] = {
     iomux_suite,
     iomux_signal_suite,
     string_suite,
+#ifndef __APPLE__
     ringbuf_suite
+#endif
 
 };
 
diff --git a/test/test_string.c b/test/test_string.c
index 4307be1..6402681 100644
--- a/test/test_string.c
+++ b/test/test_string.c
@@ -7,91 +7,92 @@
 
 
 START_TEST (test_getfields)
-   
+{
    char str[] = "a;b;c";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_getfields(str, letters, 5, 0, ";");
    ck_assert_int_eq(rc, 3);
-    
+
 
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("b", letters[1]);
    ck_assert_str_eq("c", letters[2]);
-
+}
 END_TEST
 
 START_TEST (test_getfields_consecutive)
-   
+{
    char str[] = "a;;b;c;;;";
-   char *letters[7] = {NULL}; 
+   char *letters[7] = {NULL};
 
    int rc = uc_getfields(str, letters, 5, 0, ";");
    ck_assert_int_eq(rc, 5);
 
 
- // This result is rather silly, but it's 
+ // This result is rather silly, but it's
  // how getfields works with mflag=0
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("", letters[1]);
    ck_assert_str_eq("b", letters[2]);
    ck_assert_str_eq("c", letters[3]);
    ck_assert_str_eq(";;", letters[4]);
-
+}
 END_TEST
 
 START_TEST (test_getfields_mflag)
+{
    char str[] = "a;b;c";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_getfields(str, letters, 5, 1, ";");
    ck_assert_int_eq(rc, 3);
-    
+
 
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("b", letters[1]);
    ck_assert_str_eq("c", letters[2]);
-
+}
 END_TEST
 
 START_TEST (test_getfields_consecutive_mflag)
-   
+{
    char str[] = "a;;b;c;;;";
-   char *letters[7] = {NULL}; 
+   char *letters[7] = {NULL};
 
    int rc = uc_getfields(str, letters, 7, 1, ";");
    ck_assert_int_eq(rc, 3);
 
 
- // This result is rather silly, but it's 
+ // This result is rather silly, but it's
  // how getfields works with mflag=0
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("b", letters[1]);
    ck_assert_str_eq("c", letters[2]);
-
+}
 END_TEST
 
 START_TEST (test_getfields_too_many)
-   
+{
    char str[] = "a\r\nb\r\nc\r\nd\r\ne";
-   char *letters[4] = {NULL}; 
+   char *letters[4] = {NULL};
 
    int rc = uc_getfields(str, letters, 4, 0, "\r\n");
    ck_assert_int_eq(rc, 4);
 
- // This result is rather silly, but it's 
+ // This result is rather silly, but it's
  // how getfields works with mflag=0
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("", letters[1]);
    ck_assert_str_eq("b", letters[2]);
    ck_assert_str_eq("\nc\r\nd\r\ne", letters[3]);
-
+}
 END_TEST
 
 START_TEST (test_getfields_too_many_mflag)
-   
+{
    char str[] = "a\r\nb\r\nc\r\nd\r\ne";
-   char *letters[4] = {NULL}; 
+   char *letters[4] = {NULL};
 
    int rc = uc_getfields(str, letters, 4, 1, "\r\n");
    ck_assert_int_eq(rc, 4);
@@ -100,13 +101,13 @@ START_TEST (test_getfields_too_many_mflag)
    ck_assert_str_eq("b", letters[1]);
    ck_assert_str_eq("c", letters[2]);
    ck_assert_str_eq("d\r\ne", letters[3]);
-
+}
 END_TEST
 
 START_TEST (test_getfields_empty)
-   
+{
    char str[] = "";
-   char *letters[4] = {NULL}; 
+   char *letters[4] = {NULL};
 
    int rc = uc_getfields(str, letters, 4, 0, ";\r\n");
    ck_assert_int_eq(rc, 1);
@@ -115,53 +116,53 @@ START_TEST (test_getfields_empty)
    rc = uc_getfields(str, letters, 4, 1, ";\r\n");
    ck_assert_int_eq(rc, 0);
 
-
+}
 END_TEST
 
 START_TEST (test_gettokens)
-   
+{
    char str[] = "a;b;c";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_gettokens(str, letters, 5,";");
    ck_assert_int_eq(rc, 3);
-    
+
 
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("b", letters[1]);
    ck_assert_str_eq("c", letters[2]);
-
+}
 END_TEST
 
 START_TEST (test_gettokens_consecutive)
-   
+{
    char str[] = "a;;;b;;c;";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_gettokens(str, letters, 5,";");
    ck_assert_int_eq(rc, 3);
-    
+
 
    ck_assert_str_eq("a", letters[0]);
    ck_assert_str_eq("b", letters[1]);
    ck_assert_str_eq("c", letters[2]);
-
+}
 END_TEST
 
 START_TEST (test_gettokens_empty)
-   
+{
    char str[] = "";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_gettokens(str, letters, 5,";");
    ck_assert_int_eq(rc, 0);
-
+}
 END_TEST
 
 START_TEST (test_gettokens_quotes)
-   
+{
    char str[] = "\"abc\";d;\"e \"";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_gettokens(str, letters, 5,";");
    ck_assert_int_eq(rc, 3);
@@ -169,13 +170,13 @@ START_TEST (test_gettokens_quotes)
    ck_assert_str_eq("abc", letters[0]);
    ck_assert_str_eq("d", letters[1]);
    ck_assert_str_eq("e ", letters[2]);
-
+}
 END_TEST
 
 START_TEST (test_gettokens_double_quotes)
-   
+{
    char str[] = "\"\"abc\"\";d;\"e\"\"f\"\"\"";
-   char *letters[5] = {NULL}; 
+   char *letters[5] = {NULL};
 
    int rc = uc_gettokens(str, letters, 5,";");
    ck_assert_int_eq(rc, 3);
@@ -183,7 +184,7 @@ START_TEST (test_gettokens_double_quotes)
    ck_assert_str_eq("abc", letters[0]);
    ck_assert_str_eq("d", letters[1]);
    ck_assert_str_eq("e\"f\"", letters[2]);
-
+}
 END_TEST
 
 Suite *string_suite(void)
diff --git a/test/test_strv.c b/test/test_strv.c
index 44a9976..8e53902 100644
--- a/test/test_strv.c
+++ b/test/test_strv.c
@@ -136,6 +136,7 @@ START_TEST (test_strv_append_all_nocopy)
 END_TEST
 
 START_TEST (test_strv_reverse)
+{
     struct UCStrv strv;
 
     uc_strv_init(&strv);
@@ -170,8 +171,7 @@ START_TEST (test_strv_reverse)
     ck_assert_str_eq("string1", strv.strings[2]);
 
     uc_strv_destroy(&strv);
-
-
+}
 END_TEST
 
 Suite *strv_suite(void)