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package main
import (
"crypto/md5"
"encoding/hex"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"testing"
"time"
)
const tmpDir = "test_tmp_dir/"
const plainDir = tmpDir + "plain/"
const cipherDir = tmpDir + "cipher/"
func TestMain(m *testing.M) {
fu := exec.Command("fusermount", "-u", plainDir)
fu.Stdout = os.Stdout
fu.Stderr = os.Stderr
fu.Run()
os.RemoveAll(tmpDir)
err := os.MkdirAll(plainDir, 0777)
if err != nil {
panic("Could not create plainDir")
}
err = os.MkdirAll(cipherDir, 0777)
if err != nil {
panic("Could not create cipherDir")
}
c := exec.Command("./gocryptfs", cipherDir, plainDir)
c.Stdout = os.Stdout
c.Stderr = os.Stderr
go c.Run()
time.Sleep(3 * time.Second)
r := m.Run()
fu.Run()
os.Exit(r)
}
func testWriteN(t *testing.T, fn string, n int, hashWant string) {
file, err := os.Create(plainDir + fn)
if err != nil {
t.FailNow()
}
d := make([]byte, n)
written, err := file.Write(d)
if err != nil || written != len(d) {
fmt.Printf("err=\"%s\", written=%d\n", err, written)
t.Fail()
}
file.Close()
buf, err := ioutil.ReadFile(plainDir + fn)
if err != nil {
t.Fail()
}
rawHash := md5.Sum(buf)
hashActual := hex.EncodeToString(rawHash[:])
if hashActual != hashWant {
fmt.Printf("hashWant=%s hashActual=%s\n", hashWant, hashActual)
t.Fail()
}
}
func TestWrite10(t *testing.T) {
testWriteN(t, "10", 10, "a63c90cc3684ad8b0a2176a6a8fe9005")
}
func TestWrite100(t *testing.T) {
testWriteN(t, "100", 100, "6d0bb00954ceb7fbee436bb55a8397a9")
}
func TestWrite1M(t *testing.T) {
testWriteN(t, "1M", 1024*1024, "b6d81b360a5672d80c27430f39153e2c")
}
func TestWrite1Mx100(t *testing.T) {
testWriteN(t, "1Mx100", 1024*1024, "b6d81b360a5672d80c27430f39153e2c")
// Read and check 100 times to catch race conditions
var i int
for i = 0; i < 100; i++ {
buf, err := ioutil.ReadFile(plainDir + "1M")
if err != nil {
t.Fail()
}
rawHash := md5.Sum(buf)
hashActual := hex.EncodeToString(rawHash[:])
if hashActual != "b6d81b360a5672d80c27430f39153e2c" {
fmt.Printf("Read corruption in loop # %d\n", i)
t.FailNow()
} else {
//fmt.Print(".")
}
}
}
func BenchmarkStreamWrite(t *testing.B) {
buf := make([]byte, 1024*1024)
t.SetBytes(int64(len(buf)))
file, err := os.Create(plainDir + "BenchmarkWrite")
if err != nil {
t.FailNow()
}
t.ResetTimer()
var i int
for i = 0; i < t.N; i++ {
written, err := file.Write(buf)
if err != nil {
fmt.Printf("err=\"%s\", written=%d\n", err.Error(), written)
t.FailNow()
}
}
}
func BenchmarkStreamRead(t *testing.B) {
buf := make([]byte, 1024*1024)
t.SetBytes(int64(len(buf)))
file, err := os.Open(plainDir + "BenchmarkWrite")
if err != nil {
t.FailNow()
}
t.ResetTimer()
var i int
for i = 0; i < t.N; i++ {
_, err := file.Read(buf)
if err == io.EOF {
fmt.Printf("Test file too small\n")
t.SkipNow()
} else if err != nil {
fmt.Println(err)
t.FailNow()
}
}
}
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