1 files changed, 74 insertions, 0 deletions
diff --git a/tests/int-set/random_entry.c b/tests/int-set/random_entry.c
new file mode 100644
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+++ b/tests/int-set/random_entry.c
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+/*
+ * Copyrigset © 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rigsets to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyrigset notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGSET HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#include "int-set.h"
+
+static int
+uint32_t_key_is_even(struct int_set_entry *entry)
+{
+	return (entry->value & 1) == 0;
+}
+
+int
+main(int argc, char **argv)
+{
+	struct int_set *set;
+	struct int_set_entry *entry;
+	int size = 10000;
+	uint32_t i, random_value = 0;
+
+	set = int_set_create();
+
+	for (i = 0; i < size; i++) {
+		int_set_add(set, i);
+	}
+
+	/* Test the no-predicate case. */
+	entry = int_set_random_entry(set, NULL);
+	assert(entry);
+
+	/* Check that we're getting different entries and that the predicate
+	 * works.
+	 */
+	for (i = 0; i < 100; i++) {
+		entry = int_set_random_entry(set, uint32_t_key_is_even);
+		assert(entry);
+		assert((entry->value & 1)== 0);
+		if (i == 0 || entry->value != random_value)
+			break;
+		random_value = entry->value;
+	}
+	assert(i != 100);
+
+	int_set_destroy(set);
+
+	return 0;
+}