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Diffstat (limited to 'src/pkg/big/rat_test.go')
-rw-r--r--src/pkg/big/rat_test.go344
1 files changed, 0 insertions, 344 deletions
diff --git a/src/pkg/big/rat_test.go b/src/pkg/big/rat_test.go
deleted file mode 100644
index e64505ea3..000000000
--- a/src/pkg/big/rat_test.go
+++ /dev/null
@@ -1,344 +0,0 @@
-// 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 (
- "bytes"
- "fmt"
- "gob"
- "testing"
-)
-
-
-var setStringTests = []struct {
- in, out string
- ok bool
-}{
- {"0", "0", true},
- {"-0", "0", true},
- {"1", "1", true},
- {"-1", "-1", true},
- {"1.", "1", true},
- {"1e0", "1", true},
- {"1.e1", "10", true},
- {in: "1e", ok: false},
- {in: "1.e", ok: false},
- {in: "1e+14e-5", ok: false},
- {in: "1e4.5", ok: false},
- {in: "r", ok: false},
- {in: "a/b", ok: false},
- {in: "a.b", ok: false},
- {"-0.1", "-1/10", true},
- {"-.1", "-1/10", true},
- {"2/4", "1/2", true},
- {".25", "1/4", true},
- {"-1/5", "-1/5", true},
- {"8129567.7690E14", "812956776900000000000", true},
- {"78189e+4", "781890000", true},
- {"553019.8935e+8", "55301989350000", true},
- {"98765432109876543210987654321e-10", "98765432109876543210987654321/10000000000", true},
- {"9877861857500000E-7", "3951144743/4", true},
- {"2169378.417e-3", "2169378417/1000000", true},
- {"884243222337379604041632732738665534", "884243222337379604041632732738665534", true},
- {"53/70893980658822810696", "53/70893980658822810696", true},
- {"106/141787961317645621392", "53/70893980658822810696", true},
- {"204211327800791583.81095", "4084226556015831676219/20000", true},
-}
-
-func TestRatSetString(t *testing.T) {
- for i, test := range setStringTests {
- x, ok := new(Rat).SetString(test.in)
-
- if ok != test.ok || ok && x.RatString() != test.out {
- t.Errorf("#%d got %s want %s", i, x.RatString(), test.out)
- }
- }
-}
-
-
-func TestRatScan(t *testing.T) {
- var buf bytes.Buffer
- for i, test := range setStringTests {
- x := new(Rat)
- buf.Reset()
- buf.WriteString(test.in)
-
- _, err := fmt.Fscanf(&buf, "%v", x)
- if err == nil != test.ok {
- if test.ok {
- t.Errorf("#%d error: %s", i, err.String())
- } else {
- t.Errorf("#%d expected error", i)
- }
- continue
- }
- if err == nil && x.RatString() != test.out {
- t.Errorf("#%d got %s want %s", i, x.RatString(), test.out)
- }
- }
-}
-
-
-var floatStringTests = []struct {
- in string
- prec int
- out string
-}{
- {"0", 0, "0"},
- {"0", 4, "0.0000"},
- {"1", 0, "1"},
- {"1", 2, "1.00"},
- {"-1", 0, "-1"},
- {".25", 2, "0.25"},
- {".25", 1, "0.3"},
- {".25", 3, "0.250"},
- {"-1/3", 3, "-0.333"},
- {"-2/3", 4, "-0.6667"},
- {"0.96", 1, "1.0"},
- {"0.999", 2, "1.00"},
- {"0.9", 0, "1"},
- {".25", -1, "0"},
- {".55", -1, "1"},
-}
-
-func TestFloatString(t *testing.T) {
- for i, test := range floatStringTests {
- x, _ := new(Rat).SetString(test.in)
-
- if x.FloatString(test.prec) != test.out {
- t.Errorf("#%d got %s want %s", i, x.FloatString(test.prec), test.out)
- }
- }
-}
-
-
-func TestRatSign(t *testing.T) {
- zero := NewRat(0, 1)
- for _, a := range setStringTests {
- var x Rat
- x.SetString(a.in)
- s := x.Sign()
- e := x.Cmp(zero)
- if s != e {
- t.Errorf("got %d; want %d for z = %v", s, e, &x)
- }
- }
-}
-
-
-var ratCmpTests = []struct {
- rat1, rat2 string
- out int
-}{
- {"0", "0/1", 0},
- {"1/1", "1", 0},
- {"-1", "-2/2", 0},
- {"1", "0", 1},
- {"0/1", "1/1", -1},
- {"-5/1434770811533343057144", "-5/1434770811533343057145", -1},
- {"49832350382626108453/8964749413", "49832350382626108454/8964749413", -1},
- {"-37414950961700930/7204075375675961", "37414950961700930/7204075375675961", -1},
- {"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)
-
- out := x.Cmp(y)
- if out != test.out {
- t.Errorf("#%d got out = %v; want %v", i, out, test.out)
- }
- }
-}
-
-
-func TestIsInt(t *testing.T) {
- one := NewInt(1)
- for _, a := range setStringTests {
- var x Rat
- x.SetString(a.in)
- i := x.IsInt()
- e := x.Denom().Cmp(one) == 0
- if i != e {
- t.Errorf("got %v; want %v for z = %v", i, e, &x)
- }
- }
-}
-
-
-func TestRatAbs(t *testing.T) {
- zero := NewRat(0, 1)
- for _, a := range setStringTests {
- var z Rat
- z.SetString(a.in)
- var e Rat
- e.Set(&z)
- if e.Cmp(zero) < 0 {
- e.Sub(zero, &e)
- }
- z.Abs(&z)
- if z.Cmp(&e) != 0 {
- t.Errorf("got z = %v; want %v", &z, &e)
- }
- }
-}
-
-
-type ratBinFun func(z, x, y *Rat) *Rat
-type ratBinArg struct {
- x, y, z string
-}
-
-func testRatBin(t *testing.T, i int, name string, f ratBinFun, a ratBinArg) {
- x, _ := NewRat(0, 1).SetString(a.x)
- y, _ := NewRat(0, 1).SetString(a.y)
- z, _ := NewRat(0, 1).SetString(a.z)
- out := f(NewRat(0, 1), x, y)
-
- if out.Cmp(z) != 0 {
- t.Errorf("%s #%d got %s want %s", name, i, out, z)
- }
-}
-
-
-var ratBinTests = []struct {
- x, y string
- sum, prod string
-}{
- {"0", "0", "0", "0"},
- {"0", "1", "1", "0"},
- {"-1", "0", "-1", "0"},
- {"-1", "1", "0", "-1"},
- {"1", "1", "2", "1"},
- {"1/2", "1/2", "1", "1/4"},
- {"1/4", "1/3", "7/12", "1/12"},
- {"2/5", "-14/3", "-64/15", "-28/15"},
- {"4707/49292519774798173060", "-3367/70976135186689855734", "84058377121001851123459/1749296273614329067191168098769082663020", "-1760941/388732505247628681598037355282018369560"},
- {"-61204110018146728334/3", "-31052192278051565633/2", "-215564796870448153567/6", "950260896245257153059642991192710872711/3"},
- {"-854857841473707320655/4237645934602118692642972629634714039", "-18/31750379913563777419", "-27/133467566250814981", "15387441146526731771790/134546868362786310073779084329032722548987800600710485341"},
- {"618575745270541348005638912139/19198433543745179392300736", "-19948846211000086/637313996471", "27674141753240653/30123979153216", "-6169936206128396568797607742807090270137721977/6117715203873571641674006593837351328"},
- {"-3/26206484091896184128", "5/2848423294177090248", "15310893822118706237/9330894968229805033368778458685147968", "-5/24882386581946146755650075889827061248"},
- {"26946729/330400702820", "41563965/225583428284", "1238218672302860271/4658307703098666660055", "224002580204097/14906584649915733312176"},
- {"-8259900599013409474/7", "-84829337473700364773/56707961321161574960", "-468402123685491748914621885145127724451/396955729248131024720", "350340947706464153265156004876107029701/198477864624065512360"},
- {"575775209696864/1320203974639986246357", "29/712593081308", "410331716733912717985762465/940768218243776489278275419794956", "808/45524274987585732633"},
- {"1786597389946320496771/2066653520653241", "6269770/1992362624741777", "3559549865190272133656109052308126637/4117523232840525481453983149257", "8967230/3296219033"},
- {"-36459180403360509753/32150500941194292113930", "9381566963714/9633539", "301622077145533298008420642898530153/309723104686531919656937098270", "-3784609207827/3426986245"},
-}
-
-func TestRatBin(t *testing.T) {
- for i, test := range ratBinTests {
- arg := ratBinArg{test.x, test.y, test.sum}
- testRatBin(t, i, "Add", (*Rat).Add, arg)
-
- arg = ratBinArg{test.y, test.x, test.sum}
- testRatBin(t, i, "Add symmetric", (*Rat).Add, arg)
-
- arg = ratBinArg{test.sum, test.x, test.y}
- testRatBin(t, i, "Sub", (*Rat).Sub, arg)
-
- arg = ratBinArg{test.sum, test.y, test.x}
- testRatBin(t, i, "Sub symmetric", (*Rat).Sub, arg)
-
- arg = ratBinArg{test.x, test.y, test.prod}
- testRatBin(t, i, "Mul", (*Rat).Mul, arg)
-
- arg = ratBinArg{test.y, test.x, test.prod}
- testRatBin(t, i, "Mul symmetric", (*Rat).Mul, arg)
-
- if test.x != "0" {
- arg = ratBinArg{test.prod, test.x, test.y}
- testRatBin(t, i, "Quo", (*Rat).Quo, arg)
- }
-
- if test.y != "0" {
- arg = ratBinArg{test.prod, test.y, test.x}
- testRatBin(t, i, "Quo symmetric", (*Rat).Quo, arg)
- }
- }
-}
-
-
-func TestIssue820(t *testing.T) {
- x := NewRat(3, 1)
- y := NewRat(2, 1)
- z := y.Quo(x, y)
- q := NewRat(3, 2)
- if z.Cmp(q) != 0 {
- t.Errorf("got %s want %s", z, q)
- }
-
- y = NewRat(3, 1)
- x = NewRat(2, 1)
- z = y.Quo(x, y)
- q = NewRat(2, 3)
- if z.Cmp(q) != 0 {
- t.Errorf("got %s want %s", z, q)
- }
-
- x = NewRat(3, 1)
- z = x.Quo(x, x)
- q = NewRat(3, 3)
- if z.Cmp(q) != 0 {
- t.Errorf("got %s want %s", z, q)
- }
-}
-
-
-var setFrac64Tests = []struct {
- a, b int64
- out string
-}{
- {0, 1, "0"},
- {0, -1, "0"},
- {1, 1, "1"},
- {-1, 1, "-1"},
- {1, -1, "-1"},
- {-1, -1, "1"},
- {-9223372036854775808, -9223372036854775808, "1"},
-}
-
-func TestRatSetFrac64Rat(t *testing.T) {
- for i, test := range setFrac64Tests {
- x := new(Rat).SetFrac64(test.a, test.b)
- if x.RatString() != test.out {
- t.Errorf("#%d got %s want %s", i, x.RatString(), test.out)
- }
- }
-}
-
-
-func TestRatGobEncoding(t *testing.T) {
- var medium bytes.Buffer
- enc := gob.NewEncoder(&medium)
- dec := gob.NewDecoder(&medium)
- for i, test := range gobEncodingTests {
- for j := 0; j < 4; j++ {
- medium.Reset() // empty buffer for each test case (in case of failures)
- stest := test
- if j&1 != 0 {
- // negative numbers
- stest = "-" + test
- }
- if j%2 != 0 {
- // fractions
- stest = stest + "." + test
- }
- var tx Rat
- tx.SetString(stest)
- if err := enc.Encode(&tx); err != nil {
- t.Errorf("#%d%c: encoding failed: %s", i, 'a'+j, err)
- }
- var rx Rat
- if err := dec.Decode(&rx); err != nil {
- t.Errorf("#%d%c: decoding failed: %s", i, 'a'+j, err)
- }
- if rx.Cmp(&tx) != 0 {
- t.Errorf("#%d%c: transmission failed: got %s want %s", i, 'a'+j, &rx, &tx)
- }
- }
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-04 00:32:18 +0000