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156 lines
2.9 KiB
156 lines
2.9 KiB
package filer2
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import (
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"fmt"
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"io"
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"math"
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"strconv"
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"sync"
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"testing"
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)
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type mockChunkCache struct {
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}
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func (m *mockChunkCache) GetChunk(fileId string, minSize uint64) (data []byte) {
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x, _ := strconv.Atoi(fileId)
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data = make([]byte, minSize)
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for i := 0; i < int(minSize); i++ {
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data[i] = byte(x)
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}
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return data
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}
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func (m *mockChunkCache) SetChunk(fileId string, data []byte) {
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}
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func TestReaderAt(t *testing.T) {
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visibles := []VisibleInterval{
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{
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start: 1,
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stop: 2,
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fileId: "1",
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chunkSize: 9,
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},
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{
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start: 3,
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stop: 4,
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fileId: "3",
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chunkSize: 1,
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},
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{
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start: 5,
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stop: 6,
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fileId: "5",
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chunkSize: 2,
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},
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{
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start: 7,
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stop: 9,
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fileId: "7",
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chunkSize: 2,
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},
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{
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start: 9,
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stop: 10,
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fileId: "9",
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chunkSize: 2,
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},
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}
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readerAt := &ChunkReadAt{
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chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
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lookupFileId: nil,
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readerLock: sync.Mutex{},
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fileSize: 10,
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chunkCache: &mockChunkCache{},
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}
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testReadAt(t, readerAt, 0, 10, 10, nil)
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testReadAt(t, readerAt, 0, 12, 10, io.EOF)
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testReadAt(t, readerAt, 2, 8, 8, nil)
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testReadAt(t, readerAt, 3, 6, 6, nil)
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}
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func testReadAt(t *testing.T, readerAt *ChunkReadAt, offset int64, size int, expected int, expectedErr error) {
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data := make([]byte, size)
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n, err := readerAt.ReadAt(data, offset)
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for _, d := range data {
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fmt.Printf("%x", d)
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}
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fmt.Println()
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if expected != n {
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t.Errorf("unexpected read size: %d, expect: %d", n, expected)
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}
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if err != expectedErr {
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t.Errorf("unexpected read error: %v, expect: %v", err, expectedErr)
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}
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}
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func TestReaderAt0(t *testing.T) {
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visibles := []VisibleInterval{
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{
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start: 2,
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stop: 5,
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fileId: "1",
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chunkSize: 9,
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},
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{
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start: 7,
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stop: 9,
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fileId: "2",
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chunkSize: 9,
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},
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}
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readerAt := &ChunkReadAt{
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chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
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lookupFileId: nil,
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readerLock: sync.Mutex{},
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fileSize: 10,
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chunkCache: &mockChunkCache{},
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}
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testReadAt(t, readerAt, 0, 10, 10, nil)
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testReadAt(t, readerAt, 3, 16, 7, io.EOF)
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testReadAt(t, readerAt, 3, 5, 5, nil)
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testReadAt(t, readerAt, 11, 5, 0, io.EOF)
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testReadAt(t, readerAt, 10, 5, 0, io.EOF)
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}
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func TestReaderAt1(t *testing.T) {
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visibles := []VisibleInterval{
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{
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start: 2,
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stop: 5,
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fileId: "1",
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chunkSize: 9,
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},
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}
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readerAt := &ChunkReadAt{
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chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
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lookupFileId: nil,
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readerLock: sync.Mutex{},
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fileSize: 20,
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chunkCache: &mockChunkCache{},
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}
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testReadAt(t, readerAt, 0, 20, 20, nil)
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testReadAt(t, readerAt, 1, 7, 7, nil)
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testReadAt(t, readerAt, 0, 1, 1, nil)
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testReadAt(t, readerAt, 18, 4, 2, io.EOF)
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testReadAt(t, readerAt, 12, 4, 4, nil)
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testReadAt(t, readerAt, 4, 20, 16, io.EOF)
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testReadAt(t, readerAt, 4, 10, 10, nil)
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testReadAt(t, readerAt, 1, 10, 10, nil)
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}
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