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package strconv // import "github.com/tdewolff/parse/strconv"
import (
"math"
"math/rand"
"testing"
"github.com/tdewolff/test"
)
func TestParseInt(t *testing.T) {
intTests := []struct {
i string
expected int64
}{
{"5", 5},
{"99", 99},
{"999", 999},
{"-5", -5},
{"+5", 5},
{"9223372036854775807", 9223372036854775807},
{"9223372036854775808", 0},
{"-9223372036854775807", -9223372036854775807},
{"-9223372036854775808", -9223372036854775808},
{"-9223372036854775809", 0},
{"18446744073709551620", 0},
{"a", 0},
}
for _, tt := range intTests {
i, _ := ParseInt([]byte(tt.i))
test.That(t, i == tt.expected, "return", tt.expected, "for", tt.i)
}
}
func TestLenInt(t *testing.T) {
lenIntTests := []struct {
number int64
expected int
}{
{0, 1},
{1, 1},
{10, 2},
{99, 2},
// coverage
{100, 3},
{1000, 4},
{10000, 5},
{100000, 6},
{1000000, 7},
{10000000, 8},
{100000000, 9},
{1000000000, 10},
{10000000000, 11},
{100000000000, 12},
{1000000000000, 13},
{10000000000000, 14},
{100000000000000, 15},
{1000000000000000, 16},
{10000000000000000, 17},
{100000000000000000, 18},
{1000000000000000000, 19},
}
for _, tt := range lenIntTests {
test.That(t, LenInt(tt.number) == tt.expected, "return", tt.expected, "for", tt.number)
}
}
////////////////////////////////////////////////////////////////
var num []int64
func TestMain(t *testing.T) {
for j := 0; j < 1000; j++ {
num = append(num, rand.Int63n(1000))
}
}
func BenchmarkLenIntLog(b *testing.B) {
n := 0
for i := 0; i < b.N; i++ {
for j := 0; j < 1000; j++ {
n += int(math.Log10(math.Abs(float64(num[j])))) + 1
}
}
}
func BenchmarkLenIntSwitch(b *testing.B) {
n := 0
for i := 0; i < b.N; i++ {
for j := 0; j < 1000; j++ {
n += LenInt(num[j])
}
}
}
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