From db7277df5ed4a0951698697b62afa823c3ba0d72 Mon Sep 17 00:00:00 2001
From: "Douglas B. Rumbaugh" <doug@douglasrumbaugh.com>
Date: Sun, 2 Nov 2025 13:23:50 -0500
Subject: Intial commit: No free list management yet

---
 tests/liballoc_tests.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 tests/liballoc_tests.c

(limited to 'tests')

diff --git a/tests/liballoc_tests.c b/tests/liballoc_tests.c
new file mode 100644
index 0000000..235656d
--- /dev/null
+++ b/tests/liballoc_tests.c
@@ -0,0 +1,119 @@
+/*
+ * tests/liballoc_tests.c
+ *
+ * Unit tests for liballoc 
+ * CISC 301 -- Operating Systems, Project 3
+ *
+ * Copyright (C) 2025  Douglas B. Rumbaugh <dbrumbaugh@harrisburgu.edu>
+ * 
+ * Distributed under the Modified BSD License
+ *
+ */
+#include "alloc.h"
+#include "constants.h"
+
+#include <check.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+START_TEST(basic_allocate) {
+  void *memory = allocate(ALIGNMENT * 3);
+  ck_assert_ptr_nonnull(memory);
+
+  /* verify we can write to the memory w/o segfaulting */
+  memset(memory, 0, ALIGNMENT*3);
+
+  size_t alignment = (size_t) memory % ALIGNMENT;
+  ck_assert_int_eq(alignment, 0);
+
+  /* leak the memory--we aren't testing release */
+}
+END_TEST
+
+START_TEST(multiple_allocations) {
+  size_t size = ALIGNMENT*5;
+  for (size_t i=0; i<100; i++) {
+    void *memory = allocate(size);
+    ck_assert_ptr_nonnull(memory);
+
+    memset(memory, 0, size);
+
+    size_t alignment = (size_t) memory % ALIGNMENT;
+    ck_assert_int_eq(alignment, 0);
+  }
+
+  /* leak the memory--we aren't testing release */
+}
+
+START_TEST(basic_release) {
+  void *memory = allocate(ALIGNMENT * 3);
+  ck_assert_ptr_nonnull(memory);
+
+  release(memory);
+
+  // TODO: verify entry on the free list
+}
+END_TEST
+
+START_TEST(release_null) {
+  /* releasing NULL should take no action */
+  release(NULL);
+
+  // TODO: verify no entry on free list
+}
+END_TEST
+
+START_TEST(unaligned_allocation) {
+  size_t unaligned_size = ALIGNMENT + 3;
+
+  /* ensure first allocation is aligned */
+  void *first_memory = allocate(unaligned_size);
+  size_t first_alignment = (size_t) first_memory % ALIGNMENT;
+  fprintf(stderr, "ALIGNMENT: %ld\n", first_alignment);
+  ck_assert_int_eq(first_alignment, 0);
+
+  /* now allocate several more times--each allocation should be aligned */
+  for (size_t i=0; i<10; i++) {
+    void *memory = allocate(unaligned_size);
+    size_t alignment = (size_t) memory % ALIGNMENT;
+    fprintf(stderr, "ALIGNMENT: %ld\n", alignment);
+    ck_assert_int_eq(alignment, 0);
+
+    /* just leak the memory--we aren't testing release here */
+  }
+}
+
+
+Suite *liballoc_suite(void) {
+  Suite *s;
+  TCase *unit;
+
+  s = suite_create("liballoc");
+
+  unit = tcase_create("unit");
+  tcase_add_test(unit, basic_allocate);
+  tcase_add_test(unit, multiple_allocations);
+  tcase_add_test(unit, unaligned_allocation);
+  tcase_add_test(unit, basic_release);
+  tcase_add_test(unit, release_null);
+
+
+  suite_add_tcase(s, unit);
+  return s;
+}
+
+
+int main(void) {
+  int number_failed;
+  Suite *s;
+  SRunner *sr;
+
+  s = liballoc_suite();
+  sr = srunner_create(s);
+
+  srunner_run_all(sr, CK_NORMAL);
+  number_failed = srunner_ntests_failed(sr);
+  srunner_free(sr);
+
+  exit((number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE);
+}
-- 
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