mirror of
https://github.com/seaweedfs/seaweedfs.git
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61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package page_writer
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import (
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"github.com/stretchr/testify/assert"
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"os"
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"testing"
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)
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func TestChunkedFileWriter_toActualOffset(t *testing.T) {
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cw := NewChunkedFileWriter("", 16)
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writeToFile(cw, 50, 60)
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writeToFile(cw, 60, 64)
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writeToFile(cw, 32, 40)
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writeToFile(cw, 42, 48)
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writeToFile(cw, 48, 50)
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assert.Equal(t, 1, cw.chunkUsages[0].size(), "fully covered")
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assert.Equal(t, 2, cw.chunkUsages[1].size(), "2 intervals")
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}
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func writeToFile(cw *ChunkedFileWriter, startOffset int64, stopOffset int64) {
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_, chunkUsage := cw.toActualWriteOffset(startOffset)
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// skip doing actual writing
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innerOffset := startOffset % cw.ChunkSize
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chunkUsage.MarkWritten(innerOffset, innerOffset+stopOffset-startOffset)
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}
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func TestWriteChunkedFile(t *testing.T) {
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x := NewChunkedFileWriter(os.TempDir(), 20)
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defer x.Destroy()
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y := NewChunkedFileWriter(os.TempDir(), 12)
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defer y.Destroy()
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batchSize := 4
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buf := make([]byte, batchSize)
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for i := 0; i < 256; i++ {
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for x := 0; x < batchSize; x++ {
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buf[x] = byte(i)
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}
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x.WriteAt(buf, int64(i*batchSize))
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y.WriteAt(buf, int64((255-i)*batchSize))
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}
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a := make([]byte, 1)
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b := make([]byte, 1)
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for i := 0; i < 256*batchSize; i++ {
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x.ReadDataAt(a, int64(i))
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y.ReadDataAt(b, int64(256*batchSize-1-i))
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assert.Equal(t, a[0], b[0], "same read")
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}
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}
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