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Copy pathreader_test.go
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317 lines (310 loc) · 10.3 KB
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/*
* MinIO Cloud Storage, (C) 2017 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package hash
import (
"bytes"
"encoding/hex"
"fmt"
"io"
"io/ioutil"
"testing"
)
// Tests functions like Size(), MD5*(), SHA256*()
func TestHashReaderHelperMethods(t *testing.T) {
r, err := NewReader(bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4, false)
if err != nil {
t.Fatal(err)
}
_, err = io.Copy(ioutil.Discard, r)
if err != nil {
t.Fatal(err)
}
if r.MD5HexString() != "e2fc714c4727ee9395f324cd2e7f331f" {
t.Errorf("Expected md5hex \"e2fc714c4727ee9395f324cd2e7f331f\", got %s", r.MD5HexString())
}
if r.SHA256HexString() != "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589" {
t.Errorf("Expected sha256hex \"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589\", got %s", r.SHA256HexString())
}
if r.MD5Base64String() != "4vxxTEcn7pOV8yTNLn8zHw==" {
t.Errorf("Expected md5base64 \"4vxxTEcn7pOV8yTNLn8zHw==\", got \"%s\"", r.MD5Base64String())
}
if r.Size() != 4 {
t.Errorf("Expected size 4, got %d", r.Size())
}
if r.ActualSize() != 4 {
t.Errorf("Expected size 4, got %d", r.ActualSize())
}
expectedMD5, err := hex.DecodeString("e2fc714c4727ee9395f324cd2e7f331f")
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(r.MD5(), expectedMD5) {
t.Errorf("Expected md5hex \"e2fc714c4727ee9395f324cd2e7f331f\", got %s", r.MD5HexString())
}
if !bytes.Equal(r.MD5Current(), expectedMD5) {
t.Errorf("Expected md5hex \"e2fc714c4727ee9395f324cd2e7f331f\", got %s", hex.EncodeToString(r.MD5Current()))
}
expectedSHA256, err := hex.DecodeString("88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589")
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(r.SHA256(), expectedSHA256) {
t.Errorf("Expected md5hex \"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589\", got %s", r.SHA256HexString())
}
}
// Tests hash reader checksum verification.
func TestHashReaderVerification(t *testing.T) {
testCases := []struct {
desc string
src io.Reader
size int64
actualSize int64
md5hex, sha256hex string
err error
}{
{
desc: "Success, no checksum verification provided.",
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
},
{
desc: "Failure md5 mismatch.",
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
md5hex: "d41d8cd98f00b204e9800998ecf8427f",
err: BadDigest{
"d41d8cd98f00b204e9800998ecf8427f",
"e2fc714c4727ee9395f324cd2e7f331f",
},
},
{
desc: "Failure sha256 mismatch.",
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031580",
err: SHA256Mismatch{
"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031580",
"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
},
{
desc: "Nested hash reader NewReader() should merge.",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
size: 4,
actualSize: 4,
},
{
desc: "Incorrect sha256, nested",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
size: 4,
actualSize: 4,
sha256hex: "50d858e0985ecc7f60418aaf0cc5ab587f42c2570a884095a9e8ccacd0f6545c",
err: SHA256Mismatch{
ExpectedSHA256: "50d858e0985ecc7f60418aaf0cc5ab587f42c2570a884095a9e8ccacd0f6545c",
CalculatedSHA256: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
},
{
desc: "Correct sha256, nested",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
size: 4,
actualSize: 4,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
{
desc: "Correct sha256, nested, truncated",
src: mustReader(t, bytes.NewReader([]byte("abcd-more-stuff-to-be ignored")), 4, "", "", 4, false),
size: 4,
actualSize: -1,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
{
desc: "Correct sha256, nested, truncated, swapped",
src: mustReader(t, bytes.NewReader([]byte("abcd-more-stuff-to-be ignored")), 4, "", "", -1, false),
size: 4,
actualSize: -1,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
{
desc: "Incorrect MD5, nested",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
size: 4,
actualSize: 4,
md5hex: "0773da587b322af3a8718cb418a715ce",
err: BadDigest{
ExpectedMD5: "0773da587b322af3a8718cb418a715ce",
CalculatedMD5: "e2fc714c4727ee9395f324cd2e7f331f",
},
},
{
desc: "Correct sha256, truncated",
src: bytes.NewReader([]byte("abcd-morethan-4-bytes")),
size: 4,
actualSize: 4,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
{
desc: "Correct MD5, nested",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
size: 4,
actualSize: 4,
md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
},
{
desc: "Correct MD5, truncated",
src: bytes.NewReader([]byte("abcd-morethan-4-bytes")),
size: 4,
actualSize: 4,
sha256hex: "",
md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
},
{
desc: "Correct MD5, nested, truncated",
src: mustReader(t, bytes.NewReader([]byte("abcd-morestuff")), -1, "", "", -1, false),
size: 4,
actualSize: 4,
md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
},
}
for i, testCase := range testCases {
t.Run(fmt.Sprintf("case-%d", i+1), func(t *testing.T) {
r, err := NewReader(testCase.src, testCase.size, testCase.md5hex, testCase.sha256hex, testCase.actualSize, false)
if err != nil {
t.Fatalf("Test %q: Initializing reader failed %s", testCase.desc, err)
}
_, err = io.Copy(ioutil.Discard, r)
if err != nil {
if err.Error() != testCase.err.Error() {
t.Errorf("Test %q: Expected error %s, got error %s", testCase.desc, testCase.err, err)
}
}
})
}
}
func mustReader(t *testing.T, src io.Reader, size int64, md5Hex, sha256Hex string, actualSize int64, strictCompat bool) *Reader {
r, err := NewReader(src, size, md5Hex, sha256Hex, actualSize, strictCompat)
if err != nil {
t.Fatal(err)
}
return r
}
// Tests NewReader() constructor with invalid arguments.
func TestHashReaderInvalidArguments(t *testing.T) {
testCases := []struct {
desc string
src io.Reader
size int64
actualSize int64
md5hex, sha256hex string
success bool
expectedErr error
strict bool
}{
{
desc: "Invalid md5sum NewReader() will fail.",
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
md5hex: "invalid-md5",
success: false,
expectedErr: BadDigest{},
},
{
desc: "Invalid sha256 NewReader() will fail.",
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
sha256hex: "invalid-sha256",
success: false,
expectedErr: SHA256Mismatch{},
},
{
desc: "Nested hash reader NewReader() should merge.",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
size: 4,
actualSize: 4,
success: true,
},
{
desc: "Mismatching sha256",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4, false),
size: 4,
actualSize: 4,
sha256hex: "50d858e0985ecc7f60418aaf0cc5ab587f42c2570a884095a9e8ccacd0f6545c",
success: false,
expectedErr: SHA256Mismatch{},
},
{
desc: "Correct sha256",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4, false),
size: 4,
actualSize: 4,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
success: true,
},
{
desc: "Mismatching MD5",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "", 4, false),
size: 4,
actualSize: 4,
md5hex: "0773da587b322af3a8718cb418a715ce",
success: false,
expectedErr: BadDigest{},
},
{
desc: "Correct MD5",
src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "", 4, false),
size: 4,
actualSize: 4,
md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
success: true,
},
{
desc: "Nothing, all ok",
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
success: true,
},
{
desc: "Nested, size mismatch",
src: mustReader(t, bytes.NewReader([]byte("abcd-morestuff")), 4, "", "", -1, false),
size: 2,
actualSize: -1,
success: false,
expectedErr: ErrSizeMismatch{Want: 4, Got: 2},
},
}
for i, testCase := range testCases {
t.Run(fmt.Sprintf("case-%d", i+1), func(t *testing.T) {
_, err := NewReader(testCase.src, testCase.size, testCase.md5hex, testCase.sha256hex, testCase.actualSize, testCase.strict)
if err != nil && testCase.success {
t.Errorf("Test %q: Expected success, but got error %s instead", testCase.desc, err)
}
if err == nil && !testCase.success {
t.Errorf("Test %q: Expected error, but got success", testCase.desc)
}
if !testCase.success {
if err != testCase.expectedErr {
t.Errorf("Test %q: Expected error %v, but got %v", testCase.desc, testCase.expectedErr, err)
}
}
})
}
}