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Copy pathreader_test.go
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180 lines (174 loc) · 5.47 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"
"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)
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 {
src io.Reader
size int64
actualSize int64
md5hex, sha256hex string
err error
}{
// Success, no checksum verification provided.
{
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
},
// Failure md5 mismatch.
{
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
md5hex: "d41d8cd98f00b204e9800998ecf8427f",
err: BadDigest{
"d41d8cd98f00b204e9800998ecf8427f",
"e2fc714c4727ee9395f324cd2e7f331f",
},
},
// Failure sha256 mismatch.
{
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031580",
err: SHA256Mismatch{
"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031580",
"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
},
},
}
for i, testCase := range testCases {
r, err := NewReader(testCase.src, testCase.size, testCase.md5hex, testCase.sha256hex, testCase.actualSize)
if err != nil {
t.Fatalf("Test %d: Initializing reader failed %s", i+1, err)
}
_, err = io.Copy(ioutil.Discard, r)
if err != nil {
if err.Error() != testCase.err.Error() {
t.Errorf("Test %d: Expected error %s, got error %s", i+1, testCase.err, err)
}
}
}
}
// Tests NewReader() constructor with invalid arguments.
func TestHashReaderInvalidArguments(t *testing.T) {
testCases := []struct {
src io.Reader
size int64
actualSize int64
md5hex, sha256hex string
success bool
expectedErr error
}{
// Invalid md5sum NewReader() will fail.
{
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
md5hex: "invalid-md5",
success: false,
expectedErr: BadDigest{},
},
// Invalid sha256 NewReader() will fail.
{
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
sha256hex: "invalid-sha256",
success: false,
expectedErr: SHA256Mismatch{},
},
// Nested hash reader NewReader() will fail.
{
src: &Reader{src: bytes.NewReader([]byte("abcd"))},
size: 4,
actualSize: 4,
success: false,
expectedErr: errNestedReader,
},
// Expected inputs, NewReader() will succeed.
{
src: bytes.NewReader([]byte("abcd")),
size: 4,
actualSize: 4,
success: true,
},
}
for i, testCase := range testCases {
_, err := NewReader(testCase.src, testCase.size, testCase.md5hex, testCase.sha256hex, testCase.actualSize)
if err != nil && testCase.success {
t.Errorf("Test %d: Expected success, but got error %s instead", i+1, err)
}
if err == nil && !testCase.success {
t.Errorf("Test %d: Expected error, but got success", i+1)
}
if err != testCase.expectedErr {
t.Errorf("Test %d: Expected error %v, but got %v", i+1, testCase.expectedErr, err)
}
}
}