82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
package mrhash_test
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import (
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"encoding/hex"
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"fmt"
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"testing"
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"github.com/rclone/rclone/backend/mailru/mrhash"
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"github.com/stretchr/testify/assert"
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)
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func testChunk(t *testing.T, chunk int) {
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data := make([]byte, chunk)
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for i := 0; i < chunk; i++ {
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data[i] = 'A'
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}
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for _, test := range []struct {
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n int
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want string
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}{
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{0, "0000000000000000000000000000000000000000"},
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{1, "4100000000000000000000000000000000000000"},
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{2, "4141000000000000000000000000000000000000"},
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{19, "4141414141414141414141414141414141414100"},
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{20, "4141414141414141414141414141414141414141"},
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{21, "eb1d05e78a18691a5aa196a6c2b60cd40b5faafb"},
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{22, "037e6d960601118a0639afbeff30fe716c66ed2d"},
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{4096, "45a16aa192502b010280fb5b44274c601a91fd9f"},
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{4194303, "fa019d5bd26498cf6abe35e0d61801bf19bf704b"},
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{4194304, "5ed0e07aa6ea5c1beb9402b4d807258f27d40773"},
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{4194305, "67bd0b9247db92e0e7d7e29a0947a50fedcb5452"},
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{8388607, "41a8e2eb044c2e242971b5445d7be2a13fc0dd84"},
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{8388608, "267a970917c624c11fe624276ec60233a66dc2c0"},
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{8388609, "37b60b308d553d2732aefb62b3ea88f74acfa13f"},
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} {
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d := mrhash.New()
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var toWrite int
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for toWrite = test.n; toWrite >= chunk; toWrite -= chunk {
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n, err := d.Write(data)
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assert.Nil(t, err)
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assert.Equal(t, chunk, n)
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}
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n, err := d.Write(data[:toWrite])
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assert.Nil(t, err)
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assert.Equal(t, toWrite, n)
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got1 := hex.EncodeToString(d.Sum(nil))
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assert.Equal(t, test.want, got1, fmt.Sprintf("when testing length %d", n))
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got2 := hex.EncodeToString(d.Sum(nil))
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assert.Equal(t, test.want, got2, fmt.Sprintf("when testing length %d (2nd sum)", n))
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}
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}
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func TestHashChunk16M(t *testing.T) { testChunk(t, 16*1024*1024) }
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func TestHashChunk8M(t *testing.T) { testChunk(t, 8*1024*1024) }
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func TestHashChunk4M(t *testing.T) { testChunk(t, 4*1024*1024) }
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func TestHashChunk2M(t *testing.T) { testChunk(t, 2*1024*1024) }
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func TestHashChunk1M(t *testing.T) { testChunk(t, 1*1024*1024) }
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func TestHashChunk64k(t *testing.T) { testChunk(t, 64*1024) }
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func TestHashChunk32k(t *testing.T) { testChunk(t, 32*1024) }
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func TestHashChunk2048(t *testing.T) { testChunk(t, 2048) }
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func TestHashChunk2047(t *testing.T) { testChunk(t, 2047) }
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func TestSumCalledTwice(t *testing.T) {
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d := mrhash.New()
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assert.NotPanics(t, func() { d.Sum(nil) })
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d.Reset()
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assert.NotPanics(t, func() { d.Sum(nil) })
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assert.NotPanics(t, func() { d.Sum(nil) })
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_, _ = d.Write([]byte{1})
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assert.NotPanics(t, func() { d.Sum(nil) })
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}
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func TestSize(t *testing.T) {
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d := mrhash.New()
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assert.Equal(t, 20, d.Size())
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}
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func TestBlockSize(t *testing.T) {
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d := mrhash.New()
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assert.Equal(t, 64, d.BlockSize())
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}
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