Fixed OTR decryption check

tests/unittests/test_common.c

@@ -663,6 +663,14 @@ void str_contains_str_in_middle(void **state)
     assert_true(str_contains_str(main, occur));
 }
 
+void str_contains_str_whole(void **state)
+{
+    char *main = "somestring";
+    char *occur = "somestring";
+
+    assert_true(str_contains_str(main, occur));
+}
+
 void str_empty_not_contains_str(void **state)
 {
     char *main = NULL;

tests/unittests/test_common.h

@@ -60,6 +60,7 @@ void str_not_contains_str(void **state);
 void str_contains_str_at_start(void **state);
 void str_contains_str_at_end(void **state);
 void str_contains_str_in_middle(void **state);
+void str_contains_str_whole(void **state);
 void str_empty_not_contains_str(void **state);
 void str_not_contains_str_empty(void **state);
 void str_empty_not_contains_str_empty(void **state);

tests/unittests/unittests.c

@@ -99,6 +99,7 @@ int main(int argc, char* argv[]) {
         unit_test(str_contains_str_at_start),
         unit_test(str_contains_str_at_end),
         unit_test(str_contains_str_in_middle),
+        unit_test(str_contains_str_whole),
         unit_test(str_empty_not_contains_str),
         unit_test(str_not_contains_str_empty),
         unit_test(str_empty_not_contains_str_empty),