| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package internal |
| |
| import ( |
| "github.com/apache/flink-statefun/statefun-sdk-go/v3/pkg/statefun/internal/protocol" |
| "github.com/stretchr/testify/assert" |
| "io" |
| "testing" |
| ) |
| |
| func TestCellReadWrite(t *testing.T) { |
| cell := NewCell(&protocol.ToFunction_PersistedValue{ |
| StateName: "state", |
| }, "typename") |
| |
| data := []byte{0, 1, 0, 1} |
| n, err := cell.Write(data) |
| |
| assert.NoError(t, err, "unexpected error writing data") |
| assert.Equal(t, len(data), n, "unexpected number of bytes written") |
| |
| read := make([]byte, 4) |
| |
| cell.SeekToBeginning() |
| n, err = cell.Read(read) |
| |
| assert.NoError(t, err, "unexpected error reading data") |
| assert.Equal(t, len(read), n, "unexpected number of bytes read") |
| |
| assert.Equal(t, data, read, "unexpected bytes read from cell") |
| |
| cell.SeekToBeginning() |
| allBytes, _ := io.ReadAll(cell) |
| |
| assert.Equal(t, len(allBytes), n, "unexpected number of bytes read") |
| assert.Equal(t, data, allBytes, "unexpected bytes read from cell") |
| |
| secondRead := make([]byte, 4) |
| |
| cell.SeekToBeginning() |
| n, err = cell.Read(secondRead) |
| |
| assert.NoError(t, err, "unexpected error reading data") |
| assert.Equal(t, len(secondRead), n, "unexpected number of bytes read") |
| |
| assert.Equal(t, data, secondRead, "unexpected bytes read from cell") |
| |
| cell.SeekToBeginning() |
| allBytes, _ = io.ReadAll(cell) |
| |
| assert.Equal(t, len(allBytes), n, "unexpected number of bytes read") |
| assert.Equal(t, data, allBytes, "unexpected bytes read from cell") |
| } |
| |
| func TestCellReadWriteFromInitial(t *testing.T) { |
| initial := []byte{0, 1, 0, 1} |
| cell := NewCell(&protocol.ToFunction_PersistedValue{ |
| StateName: "state", |
| StateValue: &protocol.TypedValue{ |
| Typename: "typename", |
| HasValue: true, |
| Value: initial, |
| }, |
| }, "typename") |
| |
| read := make([]byte, 4) |
| n, err := cell.Read(read) |
| |
| assert.NoError(t, err, "unexpected error reading data") |
| assert.Equal(t, len(read), n, "unexpected number of bytes read") |
| |
| assert.Equal(t, initial, read, "unexpected bytes read from cell") |
| |
| data := []byte{0, 0, 0, 1, 1, 1} |
| n, err = cell.Write(data) |
| |
| assert.NoError(t, err, "unexpected error writing data") |
| assert.Equal(t, len(data), n, "unexpected number of bytes written") |
| |
| secondRead := make([]byte, 6) |
| n, err = cell.Read(secondRead) |
| |
| assert.NoError(t, err, "unexpected error reading data") |
| assert.Equal(t, len(secondRead), n, "unexpected number of bytes read") |
| |
| assert.Equal(t, data, secondRead, "unexpected bytes read from cell") |
| } |
| |
| func TestCell_EmptyWithNoValue(t *testing.T) { |
| initial := []byte{0, 1, 0, 1} |
| cell := NewCell(&protocol.ToFunction_PersistedValue{ |
| StateName: "state", |
| StateValue: &protocol.TypedValue{ |
| Typename: "typename", |
| HasValue: true, |
| Value: initial, |
| }, |
| }, "typename") |
| |
| assert.True(t, cell.HasValue()) |
| assert.False(t, cell.empty(), "cells with a value should not be empty before any read") |
| |
| cell.Delete() |
| assert.False(t, cell.HasValue(), "cells that have been deleted should not have values") |
| assert.True(t, cell.empty(), "cells that have been deleted should be empty") |
| } |