big: fix carry error, add test case.
crypto/x509: reenable tests.
R=gri
CC=go-dev
http://go/go-review/1026004
diff --git a/src/pkg/big/int_test.go b/src/pkg/big/int_test.go
index 3b110ca..442b76f 100644
--- a/src/pkg/big/int_test.go
+++ b/src/pkg/big/int_test.go
@@ -263,11 +263,40 @@
}
+type divTest struct {
+ x, y string;
+ q, r string;
+}
+
+
+var divTests = []divTest{
+ divTest{
+ "476217953993950760840509444250624797097991362735329973741718102894495832294430498335824897858659711275234906400899559094370964723884706254265559534144986498357",
+ "9353930466774385905609975137998169297361893554149986716853295022578535724979483772383667534691121982974895531435241089241440253066816724367338287092081996",
+ "50911",
+ "1",
+ },
+}
+
+
func TestDiv(t *testing.T) {
err := quick.Check(checkDiv, nil);
if err != nil {
t.Error(err);
}
+
+ for i, test := range divTests {
+ x, _ := new(Int).SetString(test.x, 10);
+ y, _ := new(Int).SetString(test.y, 10);
+ expectedQ, _ := new(Int).SetString(test.q, 10);
+ expectedR, _ := new(Int).SetString(test.r, 10);
+
+ q, r := new(Int).Div(x, y);
+
+ if CmpInt(q, expectedQ) != 0 || CmpInt(r, expectedR) != 0 {
+ t.Errorf("#%d got (%s, %s) want (%s, %s)", i, q, r, expectedQ, expectedR);
+ }
+ }
}
