101 lines
3 KiB
Go
101 lines
3 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package strconv_test
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import (
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"runtime"
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. "strconv"
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"strings"
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"testing"
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)
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var (
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globalBuf [64]byte
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nextToOne = "1.00000000000000011102230246251565404236316680908203125" + strings.Repeat("0", 10000) + "1"
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mallocTest = []struct {
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count int
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desc string
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fn func()
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}{
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{0, `AppendInt(localBuf[:0], 123, 10)`, func() {
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var localBuf [64]byte
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AppendInt(localBuf[:0], 123, 10)
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}},
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{0, `AppendInt(globalBuf[:0], 123, 10)`, func() { AppendInt(globalBuf[:0], 123, 10) }},
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{0, `AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)`, func() {
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var localBuf [64]byte
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AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)
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}},
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{0, `AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64)`, func() { AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64) }},
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// In practice we see 7 for the next one, but allow some slop.
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// Before pre-allocation in appendQuotedWith, we saw 39.
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{10, `AppendQuoteToASCII(nil, oneMB)`, func() { AppendQuoteToASCII(nil, string(oneMB)) }},
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{0, `ParseFloat("123.45", 64)`, func() { ParseFloat("123.45", 64) }},
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{0, `ParseFloat("123.456789123456789", 64)`, func() { ParseFloat("123.456789123456789", 64) }},
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{0, `ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)`, func() {
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ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)
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}},
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{0, `ParseFloat("1.0000000000000001110223024625156540423631668090820312500...001", 64)`, func() {
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ParseFloat(nextToOne, 64)
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}},
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}
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)
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var oneMB []byte // Will be allocated to 1MB of random data by TestCountMallocs.
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func TestCountMallocs(t *testing.T) {
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if runtime.Compiler == "gccgo" {
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t.Skip("skipping on gccgo until escape analysis is turned on")
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}
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if testing.Short() {
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t.Skip("skipping malloc count in short mode")
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}
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if runtime.GOMAXPROCS(0) > 1 {
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t.Skip("skipping; GOMAXPROCS>1")
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}
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// Allocate a big messy buffer for AppendQuoteToASCII's test.
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oneMB = make([]byte, 1e6)
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for i := range oneMB {
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oneMB[i] = byte(i)
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}
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for _, mt := range mallocTest {
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allocs := testing.AllocsPerRun(100, mt.fn)
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if max := float64(mt.count); allocs > max {
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t.Errorf("%s: %v allocs, want <=%v", mt.desc, allocs, max)
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}
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}
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}
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func TestErrorPrefixes(t *testing.T) {
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_, errInt := Atoi("INVALID")
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_, errBool := ParseBool("INVALID")
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_, errFloat := ParseFloat("INVALID", 64)
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_, errInt64 := ParseInt("INVALID", 10, 64)
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_, errUint64 := ParseUint("INVALID", 10, 64)
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vectors := []struct {
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err error // Input error
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want string // Function name wanted
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}{
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{errInt, "Atoi"},
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{errBool, "ParseBool"},
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{errFloat, "ParseFloat"},
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{errInt64, "ParseInt"},
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{errUint64, "ParseUint"},
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}
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for _, v := range vectors {
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nerr, ok := v.err.(*NumError)
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if !ok {
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t.Errorf("test %s, error was not a *NumError", v.want)
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continue
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}
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if got := nerr.Func; got != v.want {
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t.Errorf("mismatching Func: got %s, want %s", got, v.want)
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}
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}
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}
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