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-rw-r--r--reftable/pq_test.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/reftable/pq_test.c b/reftable/pq_test.c
new file mode 100644
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+++ b/reftable/pq_test.c
@@ -0,0 +1,82 @@
+/*
+Copyright 2020 Google LLC
+
+Use of this source code is governed by a BSD-style
+license that can be found in the LICENSE file or at
+https://developers.google.com/open-source/licenses/bsd
+*/
+
+#include "system.h"
+
+#include "basics.h"
+#include "constants.h"
+#include "pq.h"
+#include "record.h"
+#include "reftable-tests.h"
+#include "test_framework.h"
+
+void merged_iter_pqueue_check(struct merged_iter_pqueue pq)
+{
+ int i;
+ for (i = 1; i < pq.len; i++) {
+ int parent = (i - 1) / 2;
+
+ EXPECT(pq_less(&pq.heap[parent], &pq.heap[i]));
+ }
+}
+
+static void test_pq(void)
+{
+ char *names[54] = { NULL };
+ int N = ARRAY_SIZE(names) - 1;
+
+ struct merged_iter_pqueue pq = { NULL };
+ const char *last = NULL;
+
+ int i = 0;
+ for (i = 0; i < N; i++) {
+ char name[100];
+ snprintf(name, sizeof(name), "%02d", i);
+ names[i] = xstrdup(name);
+ }
+
+ i = 1;
+ do {
+ struct reftable_record rec =
+ reftable_new_record(BLOCK_TYPE_REF);
+ struct pq_entry e = { 0 };
+
+ reftable_record_as_ref(&rec)->refname = names[i];
+ e.rec = rec;
+ merged_iter_pqueue_add(&pq, e);
+ merged_iter_pqueue_check(pq);
+ i = (i * 7) % N;
+ } while (i != 1);
+
+ while (!merged_iter_pqueue_is_empty(pq)) {
+ struct pq_entry e = merged_iter_pqueue_remove(&pq);
+ struct reftable_ref_record *ref =
+ reftable_record_as_ref(&e.rec);
+
+ merged_iter_pqueue_check(pq);
+
+ if (last) {
+ EXPECT(strcmp(last, ref->refname) < 0);
+ }
+ last = ref->refname;
+ ref->refname = NULL;
+ reftable_free(ref);
+ }
+
+ for (i = 0; i < N; i++) {
+ reftable_free(names[i]);
+ }
+
+ merged_iter_pqueue_release(&pq);
+}
+
+int pq_test_main(int argc, const char *argv[])
+{
+ RUN_TEST(test_pq);
+ return 0;
+}