1 files changed, 58 insertions, 0 deletions
diff --git a/tests/string.c b/tests/string.c
new file mode 100644
index 0000000..0e78168
--- /dev/null
+++ b/tests/string.c
@@ -0,0 +1,58 @@
+#include "../src/string.h"
+
+#include <stddef.h>
+#include <stdio.h>
+
+#include <criterion/criterion.h>
+#include <criterion/internal/assert.h>
+#include <criterion/internal/test.h>
+#include <string.h>
+
+Test(string, create_string) {
+    smrt_arena_t *arena = smrt_arena_create(KiB(4), KiB(4), false);
+    strng_t *s = strng_new(arena, 50);
+
+    cr_expect(s->alloc_size == 50);
+    cr_expect(s->len == 0);
+
+    smrt_arena_destroy(arena);
+}
+
+Test(string, from_cstring) {
+    smrt_arena_t *arena = smrt_arena_create(KiB(4), KiB(4), false);
+    strng_t *s = strng_from(arena, "Hello, world.");
+
+    cr_expect(s->alloc_size == 13);
+    cr_expect(s->len == 13);
+    cr_expect(*((u8*)s+STRNG_BASE_POS) == 72);
+    cr_expect(*((u8*)s+STRNG_BASE_POS+s->len-1) == 46);
+
+    smrt_arena_destroy(arena);
+}
+
+Test(string, set_string) {
+    smrt_arena_t *arena = smrt_arena_create(KiB(4), KiB(4), false);
+    strng_t *s = strng_from(arena, "Hello, world.");
+
+    strng_set(s, "Look ma!");
+
+    cr_expect(s->alloc_size == 13);
+    cr_expect(s->len == 8);
+    cr_expect(*((u8*)s+STRNG_BASE_POS) == 76);
+    cr_expect(*((u8*)s+STRNG_BASE_POS+s->len-1) == 33);
+
+    smrt_arena_destroy(arena);
+}
+
+Test(string, format_and_copy_string) {
+    smrt_arena_t *arena = smrt_arena_create(KiB(4), KiB(4), false);
+
+    strng_t *s = strng_from(arena, "Hello, world.");
+    char *buffer = SMRTA_ALLOC_ARRAY(arena, char, s->len+1);
+
+    u64 copied = snprintf(buffer, s->len+1, "%.*s", STRNG_FMT(s));
+    cr_expect(copied == 13);
+    cr_expect(strcmp(buffer, "Hello, world.") == 0);
+
+    smrt_arena_destroy(arena);
+}