51 lines
867 B
Go
51 lines
867 B
Go
package reverse_test
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import (
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"fmt"
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"os"
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"testing"
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)
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func genName(i int, postfix string) string {
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return fmt.Sprintf("%04d.%s", i, postfix)
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}
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// Create 10000 files with long names
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func generateLongnameFiles(dir string) {
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for i := 0; i < 100000; i++ {
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n := genName(i, x240)
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f, err := os.Create(dir + "/" + n)
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if err != nil {
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panic(err)
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}
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f.Close()
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}
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}
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func BenchmarkLongnameStat(b *testing.B) {
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// Setup
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generateLongnameFiles(dirA)
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dirFd, err := os.Open(dirB)
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if err != nil {
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b.Fatal(err)
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}
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encryptedNames, err := dirFd.Readdirnames(-1)
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if err != nil {
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b.Fatal(err)
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}
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l := len(encryptedNames)
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dirFd.Close()
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// Benchmark
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_, err := os.Stat(dirB + "/" + encryptedNames[i%l])
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if err != nil {
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b.Fatal(err)
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}
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}
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// Cleanup
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b.StopTimer()
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os.RemoveAll(dirA)
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os.Mkdir(dirA, 0700)
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}
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