1 files changed, 60 insertions, 0 deletions
diff --git a/dependencies/uthash/tests/test36.c b/dependencies/uthash/tests/test36.c
new file mode 100644
index 000000000..5927d9419
--- /dev/null
+++ b/dependencies/uthash/tests/test36.c
@@ -0,0 +1,60 @@
+#include "uthash.h"
+#include <stdlib.h>   /* malloc */
+#include <stdio.h>    /* printf */
+
+typedef struct {
+    int id;
+    UT_hash_handle hh;
+    UT_hash_handle ah;
+} example_user_t;
+
+#define EVENS(x) (((x)->id % 2) == 0)
+static int evens(void *userv)
+{
+    example_user_t *user = (example_user_t*)userv;
+    return ((user->id % 2) ? 0 : 1);
+}
+
+static int idcmp(void *_a, void *_b)
+{
+    example_user_t *a = (example_user_t*)_a;
+    example_user_t *b = (example_user_t*)_b;
+    return (a->id - b->id);
+}
+
+int main()
+{
+    int i;
+    example_user_t *user, *users=NULL, *ausers=NULL;
+
+    /* create elements */
+    for(i=0; i<10; i++) {
+        user = (example_user_t*)malloc(sizeof(example_user_t));
+        if (user == NULL) {
+            exit(-1);
+        }
+        user->id = i;
+        HASH_ADD_INT(users,id,user);
+    }
+
+    for(user=users; user!=NULL; user=(example_user_t*)(user->hh.next)) {
+        printf("user %d\n", user->id);
+    }
+
+    /* now select some users into ausers */
+    HASH_SELECT(ah,ausers,hh,users,evens);
+    HASH_SRT(ah,ausers,idcmp);
+
+    for(user=users; user!=NULL; user=(example_user_t*)(user->hh.next)) {
+        example_user_t *found = NULL;
+        int should_find = !!evens(user);
+        HASH_FIND(ah, ausers, &user->id, sizeof(user->id), found);
+        printf("user %d, should_find=%d, found=%d\n", user->id, should_find, (int)(!!found));
+    }
+
+    for(user=ausers; user!=NULL; user=(example_user_t*)(user->ah.next)) {
+        printf("auser %d\n", user->id);
+    }
+
+    return 0;
+}