Big integer math

1 files changed, 47 insertions, 0 deletions

diff --git a/source/test/unittests/bigint.test.c b/source/test/unittests/bigint.test.c
new file mode 100644
index 0000000..7df2fcc
--- /dev/null
+++ b/source/test/unittests/bigint.test.c
@@ -0,0 +1,47 @@
+#include "../../kit/bigint.h"
+
+#define KIT_TEST_FILE bigint
+#include "../../kit_test/test.h"
+
+#include <stdio.h>
+
+TEST("bigint hex add") {
+  SZ(foo, "4242424242424242424242424242424242424242");
+  SZ(bar, "1111111111111111111111111111111111111111");
+  SZ(sum, "5353535353535353535353535353535353535353");
+
+  REQUIRE(bi_equal(bi_add(bi_hex(foo), bi_hex(bar)), bi_hex(sum)));
+}
+
+TEST("bigint hex sub") {
+  SZ(foo, "4242424242424242424242424242424242424242");
+  SZ(bar, "1111111111111111111111111111111111111111");
+  SZ(dif, "3131313131313131313131313131313131313131");
+
+  REQUIRE(bi_equal(bi_sub(bi_hex(foo), bi_hex(bar)), bi_hex(dif)));
+}
+
+TEST("bigint base58") {
+  SZ(foo, "31");
+
+  REQUIRE(bi_equal(bi_base58(foo), bi_uword(58 * 2)));
+}
+
+TEST("bigint base58 add") {
+  SZ(foo, "4242424242424242424242424242424242424242");
+  SZ(bar, "2222222222222222222222222222222222222222");
+  SZ(sum, "5353535353535353535353535353535353535353");
+
+  REQUIRE(bi_equal(bi_add(bi_base58(foo), bi_base58(bar)),
+                   bi_base58(sum)));
+}
+
+TEST("bigint base58 sub") {
+  SZ(foo, "42");
+  SZ(bar, "22");
+  SZ(dif, "31");
+
+  REQUIRE(bi_equal(bi_sub(bi_base58(foo), bi_base58(bar)),
+                   bi_base58(dif)));
+}
+