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Source file src/strconv/strconv_test.go

Documentation: strconv

  // Copyright 2012 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 strconv_test
  
  import (
  	"runtime"
  	. "strconv"
  	"strings"
  	"testing"
  )
  
  var (
  	globalBuf [64]byte
  	nextToOne = "1.00000000000000011102230246251565404236316680908203125" + strings.Repeat("0", 10000) + "1"
  
  	mallocTest = []struct {
  		count int
  		desc  string
  		fn    func()
  	}{
  		{0, `AppendInt(localBuf[:0], 123, 10)`, func() {
  			var localBuf [64]byte
  			AppendInt(localBuf[:0], 123, 10)
  		}},
  		{0, `AppendInt(globalBuf[:0], 123, 10)`, func() { AppendInt(globalBuf[:0], 123, 10) }},
  		{0, `AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)`, func() {
  			var localBuf [64]byte
  			AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)
  		}},
  		{0, `AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64)`, func() { AppendFloat(globalBuf[:0], 1.23, 'g', 5, 64) }},
  		{0, `ParseFloat("123.45", 64)`, func() { ParseFloat("123.45", 64) }},
  		{0, `ParseFloat("123.456789123456789", 64)`, func() { ParseFloat("123.456789123456789", 64) }},
  		{0, `ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)`, func() {
  			ParseFloat("1.000000000000000111022302462515654042363166809082031251", 64)
  		}},
  		{0, `ParseFloat("1.0000000000000001110223024625156540423631668090820312500...001", 64)`, func() {
  			ParseFloat(nextToOne, 64)
  		}},
  	}
  )
  
  func TestCountMallocs(t *testing.T) {
  	if testing.Short() {
  		t.Skip("skipping malloc count in short mode")
  	}
  	if runtime.GOMAXPROCS(0) > 1 {
  		t.Skip("skipping; GOMAXPROCS>1")
  	}
  	for _, mt := range mallocTest {
  		allocs := testing.AllocsPerRun(100, mt.fn)
  		if max := float64(mt.count); allocs > max {
  			t.Errorf("%s: %v allocs, want <=%v", mt.desc, allocs, max)
  		}
  	}
  }
  
  func TestErrorPrefixes(t *testing.T) {
  	_, errInt := Atoi("INVALID")
  	_, errBool := ParseBool("INVALID")
  	_, errFloat := ParseFloat("INVALID", 64)
  	_, errInt64 := ParseInt("INVALID", 10, 64)
  	_, errUint64 := ParseUint("INVALID", 10, 64)
  
  	vectors := []struct {
  		err  error  // Input error
  		want string // Function name wanted
  	}{
  		{errInt, "Atoi"},
  		{errBool, "ParseBool"},
  		{errFloat, "ParseFloat"},
  		{errInt64, "ParseInt"},
  		{errUint64, "ParseUint"},
  	}
  
  	for _, v := range vectors {
  		nerr, ok := v.err.(*NumError)
  		if !ok {
  			t.Errorf("test %s, error was not a *NumError", v.want)
  			continue
  		}
  		if got := nerr.Func; got != v.want {
  			t.Errorf("mismatching Func: got %s, want %s", got, v.want)
  		}
  	}
  
  }
  

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