Function TestVFSFile_TransactionTracking

vfs_write_test.go:385–439

(t *testing.T)

}

func TestVFSFile_TransactionTracking(t *testing.T) {
	client := newWriteTestReplicaClient()

	// Create initial LTX file
	pageSize := uint32(4096)
	initialPage := make([]byte, pageSize)
	createTestLTXFile(t, client, 1, pageSize, 1, map[uint32][]byte{1: initialPage})

	// Create VFSFile with write support
	f := setupWriteableVFSFile(t, client)

	if err := f.Open(); err != nil {
		t.Fatal(err)
	}
	defer f.Close()

	// Acquire RESERVED lock (start transaction)
	if err := f.Lock(2); err != nil { // sqlite3vfs.LockReserved = 2
		t.Fatal(err)
	}

	if !f.inTransaction {
		t.Error("expected inTransaction to be true after RESERVED lock")
	}

	// Write data
	if _, err := f.WriteAt([]byte("tx data"), 0); err != nil {
		t.Fatal(err)
	}

	// Sync should be skipped during transaction
	if err := f.Sync(0); err != nil {
		t.Fatal(err)
	}
	if len(f.dirty) == 0 {
		t.Error("expected dirty pages to remain during transaction")
	}

	// Release lock (end transaction)
	if err := f.Unlock(1); err != nil { // sqlite3vfs.LockShared = 1
		t.Fatal(err)
	}

	if f.inTransaction {
		t.Error("expected inTransaction to be false after unlock")
	}

	// Now sync should work
	if err := f.Sync(0); err != nil {
		t.Fatal(err)
	}
	if len(f.dirty) != 0 {
		t.Error("expected dirty pages to be cleared after sync")
	}
}

func TestVFSFile_Truncate(t *testing.T) {
	client := newWriteTestReplicaClient()