complete buffer allocator

2025-10-06 19:52:20 +02:00
parent a98dc38f45
commit d394e4fa34
2 changed files with 50 additions and 6 deletions
@@ -0,0 +1,39 @@
+#include <criterion/criterion.h>
+#include "allocator.h"
+
+static void test_buffer_alloc(buffer_allocator_t impl) {
+    allocator_t inter = buffer_allocator_interface(&impl);
+    const int n_ints = 100;
+    int *ints = allocator_alloc(inter, sizeof(int) * n_ints);
+    for (int i = 0; i < n_ints; i++) {
+        ints[i] = i;
+    }
+    for (int i = 0; i < n_ints; i++) {
+        cr_assert_eq(ints[i], i);
+    }
+    cr_assert_eq(impl.size, sizeof(int)*n_ints);
+    ints = allocator_alloc(inter, sizeof(int) * n_ints);
+    for (int i = 0; i < n_ints; i++) {
+        ints[i] = i;
+    }
+    for (int i = 0; i < n_ints; i++) {
+        cr_assert_eq(ints[i], i);
+    }
+    cr_assert_eq(impl.size, sizeof(int)*2*n_ints);
+    allocator_free(inter, ints);
+    size_t remaining_bytes = impl.capacity - impl.size;
+    size_t double_remaining_bytes = 2 * remaining_bytes;
+    void *should_be_null = allocator_resize(inter, ints, double_remaining_bytes);
+    cr_assert_eq(should_be_null, NULL);
+    size_t double_ints = ((size_t) n_ints) * 2;
+    void *should_be_addr = allocator_resize(inter, ints, double_ints);
+    cr_assert_neq(should_be_addr, NULL);
+    buffer_allocator_reset(&impl);
+}
+
+Test(buffer_allocator, test) {
+    buffer_allocator_t impl = buffer_allocator_create(MB);
+    test_buffer_alloc(impl);
+    cr_assert_eq(impl.size, 0);
+    test_buffer_alloc(impl);
+}