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big: Add some tests

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R=rsc, gri
CC=golang-dev
https://golang.org/cl/967041
This commit is contained in:
Evan Shaw 2010-04-21 17:12:36 -07:00 committed by Robert Griesemer
parent dba9d62bc2
commit 455e799f6d
2 changed files with 49 additions and 6 deletions
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24
src/pkg/big/int_test.go
View File

@ -151,22 +151,36 @@ var fromStringTests = []fromStringTest{
fromStringTest{"0x10", 0, 16, true},
fromStringTest{in: "0x10", base: 16, ok: false},
fromStringTest{"-0x10", 0, -16, true},
fromStringTest{"00", 0, 0, true},
fromStringTest{"0", 8, 0, true},
fromStringTest{"07", 0, 7, true},
fromStringTest{"7", 8, 7, true},
fromStringTest{in: "08", ok: false},
fromStringTest{in: "8", base: 8, ok: false},
fromStringTest{"023", 0, 19, true},
fromStringTest{"23", 8, 19, true},
}
func TestSetString(t *testing.T) {
n2 := new(Int)
for i, test := range fromStringTests {
n, ok := new(Int).SetString(test.in, test.base)
if ok != test.ok {
n1, ok1 := new(Int).SetString(test.in, test.base)
n2, ok2 := n2.SetString(test.in, test.base)
expected := new(Int).New(test.out)
if ok1 != test.ok || ok2 != test.ok {
t.Errorf("#%d (input '%s') ok incorrect (should be %t)", i, test.in, test.ok)
continue
}
if !ok {
if !ok1 || !ok2 {
continue
}
if n.Cmp(new(Int).New(test.out)) != 0 {
t.Errorf("#%d (input '%s') got: %s want: %d\n", i, test.in, n, test.out)
if n1.Cmp(expected) != 0 {
t.Errorf("#%d (input '%s') got: %s want: %d\n", i, test.in, n1, test.out)
}
if n2.Cmp(expected) != 0 {
t.Errorf("#%d (input '%s') got: %s want: %d\n", i, test.in, n2, test.out)
}
}
}

31
src/pkg/big/nat_test.go
View File

@ -6,8 +6,37 @@ package big
import "testing"
type cmpTest struct {
x, y []Word
r int
}
var cmpTests = []cmpTest{
cmpTest{nil, nil, 0},
cmpTest{nil, []Word{}, 0},
cmpTest{[]Word{}, nil, 0},
cmpTest{[]Word{}, []Word{}, 0},
cmpTest{[]Word{0}, []Word{0}, 0},
cmpTest{[]Word{0}, []Word{1}, -1},
cmpTest{[]Word{1}, []Word{0}, 1},
cmpTest{[]Word{1}, []Word{1}, 0},
cmpTest{[]Word{0, _M}, []Word{1}, 1},
cmpTest{[]Word{1}, []Word{0, _M}, -1},
cmpTest{[]Word{1, _M}, []Word{0, _M}, 1},
cmpTest{[]Word{0, _M}, []Word{1, _M}, -1},
cmpTest{[]Word{16, 571956, 8794, 68}, []Word{837, 9146, 1, 754489}, -1},
cmpTest{[]Word{34986, 41, 105, 1957}, []Word{56, 7458, 104, 1957}, 1},
}
func TestCmpNN(t *testing.T) {
// TODO(gri) write this test - all other tests depends on it
for i, a := range cmpTests {
r := cmpNN(a.x, a.y)
if r != a.r {
t.Errorf("#%d got r = %v; want %v", i, r, a.r)
}
}
}