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-rw-r--r--tests/plaintextnames/file_holes_test.go96
1 files changed, 96 insertions, 0 deletions
diff --git a/tests/plaintextnames/file_holes_test.go b/tests/plaintextnames/file_holes_test.go
new file mode 100644
index 0000000..d046cea
--- /dev/null
+++ b/tests/plaintextnames/file_holes_test.go
@@ -0,0 +1,96 @@
+package plaintextnames
+
+import (
+ "fmt"
+ "os"
+ "os/exec"
+ "testing"
+
+ "github.com/rfjakob/gocryptfs/tests/test_helpers"
+
+ "github.com/rfjakob/gocryptfs/contrib/findholes/holes"
+)
+
+func findHolesPretty(t *testing.T, path string) string {
+ f, err := os.Open(path)
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer f.Close()
+
+ segments, err := holes.Find(int(f.Fd()))
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ return holes.PrettyPrint(segments)
+}
+
+// TestFileHoleCopy creates a sparse times, copies it a few times, and check if
+// the copies are the same (including the location of holes and data sections).
+//
+// The test runs with -plaintextnames because that makes it easier to manipulate
+// cipherdir directly.
+func TestFileHoleCopy(t *testing.T) {
+ n := "TestFileHoleCopy"
+ pPath := []string{pDir + "/" + n}
+ cPath := []string{cDir + "/" + n}
+
+ f, err := os.Create(pPath[0])
+ if err != nil {
+ t.Fatal(err)
+ }
+ // | hole | x | hole | x | hole |
+ buf := []byte("x")
+ f.WriteAt(buf, 10000)
+ f.WriteAt(buf, 30000)
+ f.Truncate(50000)
+ f.Sync()
+ f.Close()
+
+ // You have to update this value manually when you change the sequence
+ // above
+ md5 := test_helpers.Md5fn(pPath[0])
+ if md5 != "4e8d0742bccfbcdbf1d71be688e4e81c" {
+ t.Fatalf("wrong md5: %s", md5)
+ }
+
+ pSegments := []string{findHolesPretty(t, pPath[0])}
+ cSegments := []string{findHolesPretty(t, cPath[0])}
+
+ for i := 1; i < 5; i++ {
+ pPath = append(pPath, fmt.Sprintf("%s.%d", pPath[0], i))
+ cPath = append(cPath, fmt.Sprintf("%s.%d", cPath[0], i))
+
+ out, err := exec.Command("cp", "--sparse=auto", pPath[i-1], pPath[i]).CombinedOutput()
+ if err != nil {
+ t.Fatal(string(out))
+ }
+
+ tmp := test_helpers.Md5fn(pPath[0])
+ if tmp != md5 {
+ t.Errorf("pPath[%d]: wrong md5, have %s, want %s", i, tmp, md5)
+ }
+
+ pSegments = append(pSegments, findHolesPretty(t, pPath[i]))
+ cSegments = append(cSegments, findHolesPretty(t, cPath[i]))
+ }
+
+ for i := range pSegments {
+ t.Logf("pSegments[%d]: %s", i, pSegments[i])
+ if i < len(pSegments)-1 {
+ if pSegments[i+1] != pSegments[i] {
+ t.Errorf("error: this is different than pSegments[%d]!", i+1)
+ }
+ }
+ }
+ t.Log("------------------------------------")
+ for i := range cSegments {
+ t.Logf("cSegments[%d]: %s", i, cSegments[i])
+ if i < len(pSegments)-1 {
+ if cSegments[i+1] != cSegments[i] {
+ t.Errorf("error: this is different than cSegments[%d]!", i+1)
+ }
+ }
+ }
+}