diff -r ee25d79a4187 -r 2185f19dcc45 test/string_tests.c
--- a/test/string_tests.c	Mon Jul 14 12:45:48 2014 +0200
+++ b/test/string_tests.c	Mon Jul 14 13:51:02 2014 +0200
@@ -54,6 +54,7 @@
     UCX_TEST_END
 }
 
+
 UCX_TEST(test_sstrchr_sstrrchr) {
     sstr_t str = ST("I will find you - and I will kill you");
     UCX_TEST_BEGIN
@@ -100,6 +101,37 @@
     UCX_TEST_END
 }
 
+
+UCX_TEST(test_sstrcat) {
+    sstr_t s1 = S("12");
+    sstr_t s2 = S("34");
+    sstr_t s3 = S("56");
+    sstr_t sn = { NULL, 0 };
+    
+    UCX_TEST_BEGIN
+    
+    sstr_t t1 = sstrcat(2, s1, s2);
+    UCX_TEST_ASSERT(!sstrcmp(t1, S("1234")), "t1: wrong content");
+    free(t1.ptr);
+    
+    sstr_t t2 = sstrcat(3, s1, s2, s3);
+    UCX_TEST_ASSERT(!sstrcmp(t2, S("123456")), "t2: wrong content");
+    free(t2.ptr);
+    
+    sstr_t t3 = sstrcat(6, s1, sn, s2, sn, s3, sn);
+    UCX_TEST_ASSERT(!sstrcmp(t3, S("123456")), "t3: wrong content");
+    free(t3.ptr);
+    
+    sstr_t t4 = sstrcat(2, sn, sn);
+    UCX_TEST_ASSERT(t4.ptr, "t4.ptr is NULL");
+    UCX_TEST_ASSERT(t4.length == 0, "t4 has wrong length");
+    free(t4.ptr);
+    
+            
+    UCX_TEST_END
+    
+}
+
 UCX_TEST(test_sstrsplit) {
 
     const char *original = "this,is,a,csv,string";