tests: handle life without threads

tests/clar_libgit2.h

@@ -59,7 +59,11 @@ typedef struct {
 	char error_msg[4096];
 } cl_git_thread_err;
 
-#define cl_git_thread_pass(threaderr, expr) cl_git_thread_pass_(threaderr, (expr), __FILE__, __LINE__)
+#ifdef GIT_THREADS
+# define cl_git_thread_pass(threaderr, expr) cl_git_thread_pass_(threaderr, (expr), __FILE__, __LINE__)
+#else
+# define cl_git_thread_pass(threaderr, expr) cl_git_pass(expr)
+#endif
 
 #define cl_git_thread_pass_(__threaderr, __expr, __file, __line) do { \
 	giterr_clear(); \

tests/threads/basic.c

@@ -49,6 +49,7 @@ void test_threads_basic__set_error(void)
 	run_in_parallel(1, 4, set_error, NULL, NULL);
 }
 
+#ifdef GIT_THREADS
 static void *return_normally(void *param)
 {
 	return param;
@@ -59,9 +60,13 @@ static void *exit_abruptly(void *param)
 	git_thread_exit(param);
 	return NULL;
 }
+#endif
 
 void test_threads_basic__exit(void)
 {
+#ifndef GIT_THREADS
+	clar__skip();
+#else
 	git_thread thread;
 	void *result;
 
@@ -74,4 +79,5 @@ void test_threads_basic__exit(void)
 	cl_git_pass(git_thread_create(&thread, return_normally, (void *)232323));
 	cl_git_pass(git_thread_join(&thread, &result));
 	cl_assert_equal_sz(232323, (size_t)result);
+#endif
 }