1 files changed, 43 insertions, 0 deletions
diff --git a/usr/gri/bignum/bignum_test.go b/usr/gri/bignum/bignum_test.go
new file mode 100644
index 000000000..fe3b1e4e8
--- /dev/null
+++ b/usr/gri/bignum/bignum_test.go
@@ -0,0 +1,43 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import Bignum "bignum"
+
+const (
+	sa = "991";
+	sb = "2432902008176640000";  // 20!
+	sc = "93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000";  // 100!
+)
+
+
+var (
+	a = Bignum.NatFromString(sa);
+	b = Bignum.NatFromString(sb);
+	c = Bignum.NatFromString(sc);
+)
+
+
+func TEST(msg string, b bool) {
+	if !b {
+		panic("TEST failed: ", msg, "\n");
+	}
+}
+
+
+func TestConv() {
+	TEST("TC1", a.Cmp(Bignum.NatFromWord(991)) == 0);
+	TEST("TC2", b.Cmp(Bignum.Fact(20)) == 0);
+	TEST("TC3", c.Cmp(Bignum.Fact(100)) == 0);
+	TEST("TC4", a.String() == sa);
+	TEST("TC5", b.String() == sb);
+	TEST("TC6", c.String() == sc);
+}
+
+
+func main() {
+	TestConv();
+	print("PASSED\n");
+}