From 3664320fe5b4f5ec5bc398c84e9e48c8f529783a Mon Sep 17 00:00:00 2001 From: Jakob Unterwurzacher Date: Thu, 12 Nov 2015 21:02:44 +0100 Subject: tests: move integration tests to separate directory Also, use new "-defaultonly" flag for benchmarks (only tests with openssl=true plaintextnames=false) --- main_test.go | 451 ----------------------------------------------------------- 1 file changed, 451 deletions(-) delete mode 100644 main_test.go (limited to 'main_test.go') diff --git a/main_test.go b/main_test.go deleted file mode 100644 index befdb78..0000000 --- a/main_test.go +++ /dev/null @@ -1,451 +0,0 @@ -package main - -import ( - "bytes" - "crypto/md5" - "encoding/hex" - "fmt" - "io" - "io/ioutil" - "os" - "os/exec" - "runtime" - "sync" - "testing" -) - -const tmpDir = "/tmp/gocryptfs_main_test/" -// Mountpoint -const plainDir = tmpDir + "plain/" -const cipherDir = tmpDir + "cipher/" - -func resetTmpDir() { - fu := exec.Command("fusermount", "-z", "-u", plainDir) - 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") - } -} - -func mount(extraArgs ...string) { - var args []string - args = append(args, extraArgs...) - //args = append(args, "--fusedebug") - args = append(args, cipherDir) - args = append(args, plainDir) - c := exec.Command("./gocryptfs", args...) - // Warning messages clutter the test output. Uncomment if you want to debug - // failures. - //c.Stdout = os.Stdout - //c.Stderr = os.Stderr - err := c.Run() - if err != nil { - fmt.Println(err) - os.Exit(1) - } -} - -func unmount() error { - fu := exec.Command("fusermount", "-z", "-u", plainDir) - fu.Stdout = os.Stdout - fu.Stderr = os.Stderr - return fu.Run() -} - -// Return md5 string for file "filename" -func md5fn(filename string) string { - buf, err := ioutil.ReadFile(filename) - if err != nil { - fmt.Printf("ReadFile: %v\n", err) - return "" - } - return md5hex(buf) -} - -// Return md5 string for "buf" -func md5hex(buf []byte) string { - rawHash := md5.Sum(buf) - hash := hex.EncodeToString(rawHash[:]) - return hash -} - -// Verify that the file size equals "want". This checks: -// 1) Size reported by Stat() -// 2) Number of bytes returned when reading the whole file -func verifySize(t *testing.T, path string, want int) { - buf, err := ioutil.ReadFile(path) - if err != nil { - t.Errorf("ReadFile failed: %v", err) - } else if len(buf) != want { - t.Errorf("wrong read size: got=%d want=%d", len(buf), want) - } - - fi, err := os.Stat(path) - if err != nil { - t.Errorf("Stat failed: %v", err) - } else if fi.Size() != int64(want) { - t.Errorf("wrong stat file size, got=%d want=%d", fi.Size(), want) - } -} - -var plaintextNames bool - -// This is the entry point for the tests -func TestMain(m *testing.M) { - if testing.Verbose() { - // First printf does not show up. Verbose() always return false before "m.Run()"? - fmt.Printf("***** Testing with native Go crypto\n") - } - resetTmpDir() - mount("--zerokey", "--openssl=false") - r := m.Run() - unmount() - - if testing.Verbose() { - fmt.Printf("***** Testing with OpenSSL\n") - } - resetTmpDir() - mount("--zerokey") - r = m.Run() - unmount() - - if testing.Verbose() { - fmt.Printf("***** Testing \"--plaintextnames\"\n") - } - resetTmpDir() - mount("--zerokey", "--plaintextnames") - plaintextNames = true - r = m.Run() - unmount() - - os.Exit(r) -} - -// Write "n" zero bytes to filename "fn", read again, compare hash -func testWriteN(t *testing.T, fn string, n int) 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() - - verifySize(t, plainDir+fn, n) - - bin := md5.Sum(d) - hashWant := hex.EncodeToString(bin[:]) - - hashActual := md5fn(plainDir + fn) - - if hashActual != hashWant { - t.Errorf("Wrong content, hashWant=%s hashActual=%s\n", hashWant, hashActual) - } - - return hashActual -} - -func TestWrite10(t *testing.T) { - testWriteN(t, "10", 10) -} - -func TestWrite100(t *testing.T) { - testWriteN(t, "100", 100) -} - -func TestWrite1M(t *testing.T) { - testWriteN(t, "1M", 1024*1024) -} - -func TestWrite1Mx100(t *testing.T) { - hashWant := testWriteN(t, "1Mx100", 1024*1024) - // Read and check 100 times to catch race conditions - var i int - for i = 0; i < 100; i++ { - hashActual := md5fn(plainDir + "1M") - if hashActual != hashWant { - fmt.Printf("Read corruption in loop # %d\n", i) - t.FailNow() - } else { - //fmt.Print(".") - } - } -} - -func TestTruncate(t *testing.T) { - fn := plainDir + "truncate" - file, err := os.Create(fn) - if err != nil { - t.FailNow() - } - // Grow to two blocks - file.Truncate(7000) - verifySize(t, fn, 7000) - if md5fn(fn) != "95d4ec7038e3e4fdbd5f15c34c3f0b34" { - t.Errorf("wrong content") - } - // Shrink - needs RMW - file.Truncate(6999) - verifySize(t, fn, 6999) - if md5fn(fn) != "35fd15873ec6c35380064a41b9b9683b" { - t.Errorf("wrong content") - } - // Shrink to one partial block - file.Truncate(465) - verifySize(t, fn, 465) - if md5fn(fn) != "a1534d6e98a6b21386456a8f66c55260" { - t.Errorf("wrong content") - } - // Grow to exactly one block - file.Truncate(4096) - verifySize(t, fn, 4096) - if md5fn(fn) != "620f0b67a91f7f74151bc5be745b7110" { - t.Errorf("wrong content") - } -} - -func TestAppend(t *testing.T) { - fn := plainDir + "append" - file, err := os.Create(fn) - if err != nil { - t.FailNow() - } - data := []byte("testdata123456789") // length 17 - var buf bytes.Buffer - var hashWant string - for i := 0; i <= 500; i++ { - file.Write(data) - buf.Write(data) - bin := md5.Sum(buf.Bytes()) - hashWant = hex.EncodeToString(bin[:]) - hashActual := md5fn(fn) - if hashWant != hashActual { - t.FailNow() - } - } - - // Overwrite with the same data - // Hash must stay the same - file.Seek(0, 0) - for i := 0; i <= 500; i++ { - file.Write(data) - hashActual := md5fn(fn) - if hashWant != hashActual { - t.FailNow() - } - } -} - -// Create a file with holes by writing to offset 0 (block #0) and -// offset 4096 (block #1). -func TestFileHoles(t *testing.T) { - fn := plainDir + "fileholes" - file, err := os.Create(fn) - if err != nil { - t.Errorf("file create failed") - } - foo := []byte("foo") - file.Write(foo) - file.WriteAt(foo, 4096) - _, err = ioutil.ReadFile(fn) - if err != nil { - t.Error(err) - } -} - -func sContains(haystack []string, needle string) bool { - for _, element := range haystack { - if element == needle { - return true - } - } - return false -} - -func TestRmwRace(t *testing.T) { - - runtime.GOMAXPROCS(10) - - fn := plainDir + "rmwrace" - f1, err := os.Create(fn) - if err != nil { - t.Fatalf("file create failed") - } - f2, err := os.Create(fn) - if err != nil { - t.Fatalf("file create failed") - } - - oldBlock := bytes.Repeat([]byte("o"), 4096) - - newBlock := bytes.Repeat([]byte("n"), 4096) - - shortBlock := bytes.Repeat([]byte("s"), 16) - - mergedBlock := make([]byte, 4096) - copy(mergedBlock, newBlock) - copy(mergedBlock[4080:], shortBlock) - - goodMd5 := make(map[string]int) - - for i := 0; i < 1000; i++ { - // Reset to [ooooooooo] - _, err = f1.WriteAt(oldBlock, 0) - if err != nil { - t.Fatalf("Write failed") - } - - var wg sync.WaitGroup - wg.Add(2) - - // Write to the end of the file, [....ssss] - go func() { - f1.WriteAt(shortBlock, 4080) - wg.Done() - }() - - // Overwrite to [nnnnnnn] - go func() { - f2.WriteAt(newBlock, 0) - wg.Done() - }() - - wg.Wait() - - // The file should be either: - // [nnnnnnnnnn] (md5: 6c1660fdabccd448d1359f27b3db3c99) or - // [nnnnnnssss] (md5: da885006a6a284530a427c73ce1e5c32) - // but it must not be - // [oooooossss] - - buf, _ := ioutil.ReadFile(fn) - m := md5hex(buf) - goodMd5[m] = goodMd5[m] + 1 - - /* - if m == "6c1660fdabccd448d1359f27b3db3c99" { - fmt.Println(hex.Dump(buf)) - t.FailNow() - } - */ - } - if testing.Verbose() { - fmt.Println(goodMd5) - } -} - -// With "--plaintextnames", the name "/gocryptfs.conf" is reserved. -// Otherwise there should be no restrictions. -func TestFiltered(t *testing.T) { - filteredFile := plainDir + "gocryptfs.conf" - file, err := os.Create(filteredFile) - if plaintextNames == true && err == nil { - fmt.Errorf("should have failed but didn't") - } else if plaintextNames == false && err != nil { - t.Error(err) - } - file.Close() - - err = os.Remove(filteredFile) - if plaintextNames == true && err == nil { - fmt.Errorf("should have failed but didn't") - } else if plaintextNames == false && err != nil { - t.Error(err) - } -} - -func TestFilenameEncryption(t *testing.T) { - file, err := os.Create(plainDir + "TestFilenameEncryption.txt") - file.Close() - if err != nil { - t.Fatal(err) - } - - _, err = os.Stat(cipherDir + "TestFilenameEncryption.txt") - if plaintextNames == true && err != nil { - t.Errorf("plaintextnames not working: %v", err) - } else if plaintextNames == false && err == nil { - t.Errorf("file name encryption not working") - } -} - -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() - } - } - file.Close() -} - -func BenchmarkStreamRead(t *testing.B) { - buf := make([]byte, 1024*1024) - t.SetBytes(int64(len(buf))) - - fn := plainDir + "BenchmarkWrite" - fi, _ := os.Stat(fn) - mb := int(fi.Size() / 1024 / 1024) - - if t.N > mb { - // Grow file so we can satisfy the test - //fmt.Printf("Growing file to %d MB... ", t.N) - f2, err := os.OpenFile(fn, os.O_WRONLY|os.O_APPEND, 0666) - if err != nil { - fmt.Println(err) - t.FailNow() - } - for h := 0; h < t.N-mb; h++ { - _, err = f2.Write(buf) - if err != nil { - fmt.Println(err) - t.FailNow() - } - } - f2.Close() - //fmt.Printf("done\n") - } - - 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() - } - } - file.Close() -} -- cgit v1.2.3