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62 lines
2.5 KiB
62 lines
2.5 KiB
package storage
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import (
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"crypto/rand"
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"github.com/chrislusf/seaweedfs/weed/storage/types"
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"io"
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"io/ioutil"
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"os"
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"testing"
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)
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func TestAppend(t *testing.T) {
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n := &Needle{
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Cookie: types.Cookie(123), // Cookie Cookie `comment:"random number to mitigate brute force lookups"`
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Id: types.NeedleId(123), // Id NeedleId `comment:"needle id"`
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Size: 8, // Size uint32 `comment:"sum of DataSize,Data,NameSize,Name,MimeSize,Mime"`
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DataSize: 4, // DataSize uint32 `comment:"Data size"` //version2
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Data: []byte("abcd"), // Data []byte `comment:"The actual file data"`
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Flags: 0, // Flags byte `comment:"boolean flags"` //version2
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NameSize: 0, // NameSize uint8 //version2
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Name: nil, // Name []byte `comment:"maximum 256 characters"` //version2
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MimeSize: 0, // MimeSize uint8 //version2
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Mime: nil, // Mime []byte `comment:"maximum 256 characters"` //version2
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PairsSize: 0, // PairsSize uint16 //version2
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Pairs: nil, // Pairs []byte `comment:"additional name value pairs, json format, maximum 6
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LastModified: 123, // LastModified uint64 //only store LastModifiedBytesLength bytes, which is 5 bytes
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Ttl: nil, // Ttl *TTL
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Checksum: 123, // Checksum CRC `comment:"CRC32 to check integrity"`
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AppendAtNs: 123, // AppendAtNs uint64 `comment:"append timestamp in nano seconds"` //version3
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Padding: nil, // Padding []byte `comment:"Aligned to 8 bytes"`
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}
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tempFile, err := ioutil.TempFile("", ".dat")
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if err != nil {
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t.Errorf("Fail TempFile. %v", err)
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return
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}
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/*
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uint8 : 0 to 255
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uint16 : 0 to 65535
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uint32 : 0 to 4294967295
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uint64 : 0 to 18446744073709551615
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int8 : -128 to 127
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int16 : -32768 to 32767
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int32 : -2147483648 to 2147483647
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int64 : -9223372036854775808 to 9223372036854775807
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*/
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fileSize := int64(4294967295) + 10000
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io.CopyN(tempFile, rand.Reader, fileSize)
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defer func() {
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tempFile.Close()
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os.Remove(tempFile.Name())
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}()
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offset, _, _, _ := n.Append(tempFile, CurrentVersion)
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if offset != uint64(fileSize) {
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t.Errorf("Fail to Append Needle.")
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}
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}
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