Added hashtable

tests/test_hashtable.c

@@ -0,0 +1,63 @@
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+
+#include <hashtable.h>
+
+void test_hashtable(int size) {
+	hashtable h =  hashtable_new(size);
+	void *value1 = "to jest jakaś tam wartość";
+	void *value2 = "I inna";
+	void *value3 = "trzecia";
+	void *value4 = "Czwarta";
+	void *value5 = "Piąta";
+
+	void *retval = hashtable_set(h, "jeden", value1);
+	assert(retval == NULL);
+
+	void *found = hashtable_lookup(h, "jeden");
+	assert(found != NULL && !strcmp(value1, found));
+
+	retval = hashtable_set(h, "dwa", value2);
+	assert(retval == NULL);
+
+	retval = hashtable_set(h, "trzy", value3);
+	assert(retval == NULL);
+
+	retval = hashtable_set(h, "cztery", value4);
+	assert(retval == NULL);
+
+	retval = hashtable_set(h, "jeden", value5);
+	assert(retval != NULL);
+	assert (retval == value1);
+
+	retval = hashtable_lookup(h, "niema");
+	assert(retval == NULL);
+
+	retval = hashtable_lookup(h, "jeden");
+	assert(retval == value5);
+
+	ht_iterator iter = hashtable_iter(h);
+
+	while (ht_iter_next(&iter)) {
+		printf("Key %s, value: %s\n", ht_iter_key(&iter), (const char*) ht_iter_value(&iter));
+	}
+	
+	
+	retval = hashtable_remove(h, "cztery");
+	assert (retval == value4);
+	retval = hashtable_remove(h, "trzy");
+	assert(retval == value3);
+	retval = hashtable_remove(h, "dwa");
+	assert(retval == value2);
+	retval = hashtable_remove(h, "jeden");
+	assert(retval == value5);
+
+	hashtable_destroy(h);
+}
+
+int main() {
+   test_hashtable(2);
+   test_hashtable(10);
+}