80 lines
1.5 KiB
Go
80 lines
1.5 KiB
Go
package ints
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import (
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"math"
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"strconv"
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"testing"
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"lukechampine.com/frand"
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"x.realy.lol/chk"
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)
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func TestMarshalUnmarshal(t *testing.T) {
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b := make([]byte, 0, 8)
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var rem []byte
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var n *T
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var err error
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for _ = range 10000000 {
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n = New(uint64(frand.Intn(math.MaxInt64)))
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b = n.Marshal(b)
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m := New(0)
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if rem, err = m.Unmarshal(b); chk.E(err) {
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t.Fatal(err)
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}
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if n.N != m.N {
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t.Fatalf("failed to convert to int64 at %d %s %d", n.N, b, m.N)
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}
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if len(rem) > 0 {
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t.Fatalf("leftover bytes after converting back: '%s'", rem)
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}
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b = b[:0]
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}
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}
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func BenchmarkByteStringToInt64(bb *testing.B) {
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b := make([]byte, 0, 19)
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var i int
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const nTests = 10000000
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testInts := make([]*T, nTests)
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for i = range nTests {
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testInts[i] = New(frand.Intn(math.MaxInt64))
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}
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bb.Run("Marshal", func(bb *testing.B) {
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bb.ReportAllocs()
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for i = 0; i < bb.N; i++ {
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n := testInts[i%10000]
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b = n.Marshal(b)
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b = b[:0]
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}
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})
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bb.Run("Itoa", func(bb *testing.B) {
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bb.ReportAllocs()
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var s string
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for i = 0; i < bb.N; i++ {
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n := testInts[i%10000]
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s = strconv.Itoa(int(n.N))
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_ = s
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}
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})
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bb.Run("MarshalUnmarshal", func(bb *testing.B) {
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bb.ReportAllocs()
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m := New(0)
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for i = 0; i < bb.N; i++ {
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n := testInts[i%10000]
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b = m.Marshal(b)
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_, _ = n.Unmarshal(b)
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b = b[:0]
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}
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})
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bb.Run("ItoaAtoi", func(bb *testing.B) {
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bb.ReportAllocs()
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var s string
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for i = 0; i < bb.N; i++ {
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n := testInts[i%10000]
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s = strconv.Itoa(int(n.N))
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_, _ = strconv.Atoi(s)
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}
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})
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}
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