130 lines
2.4 KiB
Go
130 lines
2.4 KiB
Go
package matrix
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import (
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"bytes"
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"io"
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"log"
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"os"
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"sync"
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"syscall"
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"testing"
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"github.com/rfjakob/gocryptfs/tests/test_helpers"
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)
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// https://github.com/rfjakob/gocryptfs/issues/363
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//
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// Note: this test calls log.Fatal() instead of t.Fatal() because apparently,
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// calling t.Fatal() from a goroutine hangs the test.
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func TestConcurrentReadWrite(t *testing.T) {
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var wg sync.WaitGroup
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fn := test_helpers.DefaultPlainDir + "/TestConcurrentReadWrite"
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if f, err := os.Create(fn); err != nil {
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t.Fatal(err)
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} else {
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f.Close()
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}
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buf := make([]byte, 100)
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content := []byte("1234567890")
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threads := 10
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loops := 30
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for i := 0; i < threads; i++ {
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// Reader thread
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wg.Add(1)
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go func() {
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fRd, err := os.Open(fn)
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if err != nil {
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log.Fatal(err)
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}
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for j := 0; j < loops; j++ {
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n, err := fRd.ReadAt(buf, 0)
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if err != nil && err != io.EOF {
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log.Fatal(err)
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}
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if n != 0 && n != 10 {
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log.Fatalf("strange read length: %d", n)
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}
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}
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fRd.Close()
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wg.Done()
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}()
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// Writer thread
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wg.Add(1)
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go func() {
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fWr, err := os.OpenFile(fn, os.O_RDWR, 0700)
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if err != nil {
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log.Fatal(err)
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}
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for j := 0; j < loops; j++ {
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err = fWr.Truncate(0)
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if err != nil {
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log.Fatal(err)
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}
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_, err = fWr.WriteAt(content, 0)
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if err != nil {
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log.Fatal(err)
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}
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}
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fWr.Close()
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wg.Done()
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}()
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}
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wg.Wait()
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}
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// https://github.com/rfjakob/gocryptfs/issues/363
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//
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// Note: this test calls log.Fatal() instead of t.Fatal() because apparently,
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// calling t.Fatal() from a goroutine hangs the test.
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func TestConcurrentReadCreate(t *testing.T) {
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fn := test_helpers.DefaultPlainDir + "/TestConcurrentReadCreate"
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content := []byte("1234567890")
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loops := 100
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var wg sync.WaitGroup
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// "Create()" thread
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wg.Add(1)
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go func() {
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for i := 0; i < loops; i++ {
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f, err := os.Create(fn)
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if err != nil {
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log.Fatal(err)
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}
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_, err = f.Write(content)
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if err != nil {
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log.Fatal(err)
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}
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f.Close()
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syscall.Unlink(fn)
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}
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wg.Done()
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}()
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// "Reader" thread
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wg.Add(1)
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go func() {
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buf0 := make([]byte, 100)
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for i := 0; i < loops; i++ {
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f, err := os.Open(fn)
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if err != nil {
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i++
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continue
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}
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n, err := f.Read(buf0)
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if err == io.EOF {
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i++
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continue
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}
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if err != nil {
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log.Fatal(err)
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}
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buf := buf0[:n]
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if bytes.Compare(buf, content) != 0 {
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log.Fatal("content mismatch")
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}
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f.Close()
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}
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wg.Done()
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}()
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wg.Wait()
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}
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