rclone/fs/hash/hash_test.go

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package hash_test
import (
"bytes"
"io"
"testing"
"github.com/ncw/rclone/fs/hash"
"github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// Check it satisfies the interface
var _ pflag.Value = (*hash.Type)(nil)
func TestHashSet(t *testing.T) {
var h hash.Set
assert.Equal(t, 0, h.Count())
a := h.Array()
assert.Len(t, a, 0)
h = h.Add(hash.MD5)
assert.Equal(t, 1, h.Count())
assert.Equal(t, hash.MD5, h.GetOne())
a = h.Array()
assert.Len(t, a, 1)
assert.Equal(t, a[0], hash.MD5)
// Test overlap, with all hashes
h = h.Overlap(hash.Supported)
assert.Equal(t, 1, h.Count())
assert.Equal(t, hash.MD5, h.GetOne())
assert.True(t, h.SubsetOf(hash.Supported))
assert.True(t, h.SubsetOf(hash.NewHashSet(hash.MD5)))
h = h.Add(hash.SHA1)
assert.Equal(t, 2, h.Count())
one := h.GetOne()
if !(one == hash.MD5 || one == hash.SHA1) {
t.Fatalf("expected to be either MD5 or SHA1, got %v", one)
}
assert.True(t, h.SubsetOf(hash.Supported))
assert.False(t, h.SubsetOf(hash.NewHashSet(hash.MD5)))
assert.False(t, h.SubsetOf(hash.NewHashSet(hash.SHA1)))
assert.True(t, h.SubsetOf(hash.NewHashSet(hash.MD5, hash.SHA1)))
a = h.Array()
assert.Len(t, a, 2)
ol := h.Overlap(hash.NewHashSet(hash.MD5))
assert.Equal(t, 1, ol.Count())
assert.True(t, ol.Contains(hash.MD5))
assert.False(t, ol.Contains(hash.SHA1))
ol = h.Overlap(hash.NewHashSet(hash.MD5, hash.SHA1))
assert.Equal(t, 2, ol.Count())
assert.True(t, ol.Contains(hash.MD5))
assert.True(t, ol.Contains(hash.SHA1))
}
type hashTest struct {
input []byte
output map[hash.Type]string
}
var hashTestSet = []hashTest{
{
input: []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14},
output: map[hash.Type]string{
hash.MD5: "bf13fc19e5151ac57d4252e0e0f87abe",
hash.SHA1: "3ab6543c08a75f292a5ecedac87ec41642d12166",
hash.Dropbox: "214d2fcf3566e94c99ad2f59bd993daca46d8521a0c447adf4b324f53fddc0c7",
},
},
// Empty data set
{
input: []byte{},
output: map[hash.Type]string{
hash.MD5: "d41d8cd98f00b204e9800998ecf8427e",
hash.SHA1: "da39a3ee5e6b4b0d3255bfef95601890afd80709",
hash.Dropbox: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
},
},
}
func TestMultiHasher(t *testing.T) {
for _, test := range hashTestSet {
mh := hash.NewMultiHasher()
n, err := io.Copy(mh, bytes.NewBuffer(test.input))
require.NoError(t, err)
assert.Len(t, test.input, int(n))
sums := mh.Sums()
for k, v := range sums {
expect, ok := test.output[k]
require.True(t, ok, "test output for hash not found")
assert.Equal(t, v, expect)
}
// Test that all are present
for k, v := range test.output {
expect, ok := sums[k]
require.True(t, ok, "test output for hash not found")
assert.Equal(t, v, expect)
}
}
}
func TestMultiHasherTypes(t *testing.T) {
h := hash.SHA1
for _, test := range hashTestSet {
mh, err := hash.NewMultiHasherTypes(hash.NewHashSet(h))
if err != nil {
t.Fatal(err)
}
n, err := io.Copy(mh, bytes.NewBuffer(test.input))
require.NoError(t, err)
assert.Len(t, test.input, int(n))
sums := mh.Sums()
assert.Len(t, sums, 1)
assert.Equal(t, sums[h], test.output[h])
}
}
func TestHashStream(t *testing.T) {
for _, test := range hashTestSet {
sums, err := hash.Stream(bytes.NewBuffer(test.input))
require.NoError(t, err)
for k, v := range sums {
expect, ok := test.output[k]
require.True(t, ok)
assert.Equal(t, v, expect)
}
// Test that all are present
for k, v := range test.output {
expect, ok := sums[k]
require.True(t, ok)
assert.Equal(t, v, expect)
}
}
}
func TestHashStreamTypes(t *testing.T) {
h := hash.SHA1
for _, test := range hashTestSet {
sums, err := hash.StreamTypes(bytes.NewBuffer(test.input), hash.NewHashSet(h))
require.NoError(t, err)
assert.Len(t, sums, 1)
assert.Equal(t, sums[h], test.output[h])
}
}
func TestHashSetStringer(t *testing.T) {
h := hash.NewHashSet(hash.SHA1, hash.MD5, hash.Dropbox)
assert.Equal(t, h.String(), "[MD5, SHA-1, DropboxHash]")
h = hash.NewHashSet(hash.SHA1)
assert.Equal(t, h.String(), "[SHA-1]")
h = hash.NewHashSet()
assert.Equal(t, h.String(), "[]")
}
func TestHashStringer(t *testing.T) {
h := hash.MD5
assert.Equal(t, h.String(), "MD5")
h = hash.None
assert.Equal(t, h.String(), "None")
}