Function TestOpen_ErrChecksum

db_test.go:185–218

Ensure that opening a file with two invalid checksums returns ErrChecksum.

(t *testing.T)

// Ensure that opening a file with two invalid checksums returns ErrChecksum.
func TestOpen_ErrChecksum(t *testing.T) {
	if pageSize != os.Getpagesize() {
		t.Skip("page size mismatch")
	}

	// Create empty database.
	db := btesting.MustCreateDB(t)
	path := db.Path()

	// Close database.
	if err := db.Close(); err != nil {
		t.Fatal(err)
	}

	// Read data file.
	buf, err := os.ReadFile(path)
	if err != nil {
		t.Fatal(err)
	}

	// Rewrite meta pages.
	meta0 := (*meta)(unsafe.Pointer(&buf[pageHeaderSize]))
	meta0.pgid++
	meta1 := (*meta)(unsafe.Pointer(&buf[pageSize+pageHeaderSize]))
	meta1.pgid++
	if err := os.WriteFile(path, buf, 0666); err != nil {
		t.Fatal(err)
	}

	// Reopen data file.
	if _, err := bolt.Open(path, 0600, nil); err != berrors.ErrChecksum {
		t.Fatalf("unexpected error: %s", err)
	}
}

// Ensure that it can read the page size from the second meta page if the first one is invalid.
// The page size is expected to be the OS's page size in this case.