Add hash set implementation

tests/hashset/test_hashset.h

@@ -0,0 +1,16 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#ifndef TEST_HASHSET_H
+#define TEST_HASHSET_H
+
+#include "wapp.h"
+
+WpTestFuncResult test_hashset(void);
+WpTestFuncResult test_hashset_alloc(void);
+WpTestFuncResult test_hashset_find(void);
+WpTestFuncResult test_hashset_insert_capped(void);
+WpTestFuncResult test_hashset_insert_alloc(void);
+WpTestFuncResult test_hashset_remove(void);
+WpTestFuncResult test_hashset_clear(void);
+
+#endif // !TEST_HASHSET_H