1 files changed, 34 insertions, 0 deletions
diff --git a/lib/tst/string.c b/lib/tst/string.c
new file mode 100644
index 0000000..725d547
--- /dev/null
+++ b/lib/tst/string.c
@@ -0,0 +1,34 @@
+#include "../string.h"
+#include <assert.h>
+
+static const char *dec = "12341234";
+static const char *neg_dec = "-12341234";
+static const char *u32_hex = "decafade";
+static const char *i32_hex = "7fffffff";
+static char buffer[64];
+
+int
+main()
+{
+  { // utoa
+    char *r;
+
+    r = utoa(buffer, 12341234u, 10);
+    for (unsigned i = 0; dec[i] != '\0'; ++i) assert(r[i] == dec[i]);
+
+    r = utoa(buffer, 0xdecafade, 16);
+    for (unsigned i = 0; u32_hex[i] != '\0'; ++i) assert(r[i] == u32_hex[i]);
+  }
+  { // itoa
+    char *r;
+
+    r = itoa(buffer, 12341234, 10);
+    for (unsigned i = 0; dec[i] != '\0'; ++i) assert(r[i] == dec[i]);
+
+    r = itoa(buffer, -12341234, 10);
+    for (unsigned i = 0; neg_dec[i] != '\0'; ++i) assert(r[i] == neg_dec[i]);
+
+    r = itoa(buffer, 0x7fffffff, 16);
+    for (unsigned i = 0; i32_hex[i] != '\0'; ++i) assert(r[i] == i32_hex[i]);
+  }
+}