code review 1250043: big: Add Rat type

src/pkg/big/rat_test.go

 // Copyright 2010 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 big
 
 import "testing"
 
 
 type setStringTest struct {
         in, out string
 }
 
 var setStringTests = []setStringTest{
-        setStringTest{"0", "0/1"},
-        setStringTest{"1", "1/1"},
-        setStringTest{"-1", "-1/1"},
+        setStringTest{"0", "0"},
+        setStringTest{"1", "1"},
+        setStringTest{"-1", "-1"},
         setStringTest{"2/4", "1/2"},
         setStringTest{".25", "1/4"},
         setStringTest{"-1/5", "-1/5"},
 }
 
 func TestRatSetString(t *testing.T) {
         for i, test := range setStringTests {
                 x, _ := new(Rat).SetString(test.in)
 
                 if x.String() != test.out {
@@ skipping 36 matching lines @@
         rat1, rat2 string
         out        int
 }
 
 var ratCmpTests = []ratCmpTest{
         ratCmpTest{"0", "0/1", 0},
         ratCmpTest{"1/1", "1", 0},
         ratCmpTest{"-1", "-2/2", 0},
         ratCmpTest{"1", "0", 1},
         ratCmpTest{"0/1", "1/1", -1},
-        ratCmpTest{"-5/1434770811533343057144", "-5/1434770811533343057145", 1},
+        ratCmpTest{"-5/1434770811533343057144", "-5/1434770811533343057145", -1},
         ratCmpTest{"49832350382626108453/8964749413", "49832350382626108454/8964749413", -1},
         ratCmpTest{"-37414950961700930/7204075375675961", "37414950961700930/7204075375675961", -1},
         ratCmpTest{"37414950961700930/7204075375675961", "74829901923401860/14408150751351922", 0},
 }
 
 func TestRatCmp(t *testing.T) {
         for i, test := range ratCmpTests {
                 x, _ := new(Rat).SetString(test.rat1)
                 y, _ := new(Rat).SetString(test.rat2)
 
@@ skipping 91 matching lines @@
         ratBinArg{"1/4", "1/3", "3/4"},
         ratBinArg{"2/5", "-14/3", "-3/35"},
         ratBinArg{"808/45524274987585732633", "29/712593081308", "575775209696864/1320203974639986246357"},
         ratBinArg{"8967230/3296219033", "6269770/1992362624741777", "1786597389946320496771/2066653520653241"},
         ratBinArg{"-3784609207827/3426986245", "9381566963714/9633539", "-36459180403360509753/32150500941194292113930"},
 }
 
 func TestRatQuo(t *testing.T) {
         testRatBin(t, (*Rat).Quo, ratQuoTests)
 }