ebml-go/block_test.go
2024-09-18 18:10:46 +02:00

163 lines
4.8 KiB
Go

// Copyright 2019 The ebml-go authors.
//
// 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 ebml
import (
"bytes"
"io"
"reflect"
"testing"
"git.gammaspectra.live/WeebDataHoarder/ebml-go/internal/errs"
)
func TestUnmarshalBlock(t *testing.T) {
testCases := map[string]struct {
input []byte
expected Block
}{
"Track1BKeyframeInvisible": {
[]byte{0x82, 0x01, 0x23, 0x88, 0xAA, 0xCC},
Block{0x02, 0x0123, true, true, LacingNo, false, [][]byte{{0xAA, 0xCC}}},
},
"Track2BDiscardable": {
[]byte{0x42, 0x13, 0x01, 0x23, 0x01, 0x11, 0x22, 0x33},
Block{0x0213, 0x0123, false, false, LacingNo, true, [][]byte{{0x11, 0x22, 0x33}}},
},
"Track3BNoData": {
[]byte{0x21, 0x23, 0x45, 0x00, 0x02, 0x00},
Block{0x012345, 0x0002, false, false, LacingNo, false, [][]byte{{}}},
},
"FixedLace": {
[]byte{0x82, 0x01, 0x23, 0x04, 0x02, 0x0A, 0x0B, 0x0C},
Block{
0x02, 0x0123, false, false, LacingFixed, false,
[][]byte{{0x0A}, {0x0B}, {0x0C}},
},
},
"XiphLace": {
[]byte{0x82, 0x01, 0x23, 0x02, 0x02, 0x01, 0x02, 0x0A, 0x0B, 0x1B, 0x0C},
Block{
0x02, 0x0123, false, false, LacingXiph, false,
[][]byte{{0x0A}, {0x0B, 0x1B}, {0x0C}},
},
},
"EBMLLace": {
[]byte{0x82, 0x01, 0x23, 0x06, 0x02, 0x81, 0xC0, 0x0A, 0x0B, 0x1B, 0x0C},
Block{
0x02, 0x0123, false, false, LacingEBML, false,
[][]byte{{0x0A}, {0x0B, 0x1B}, {0x0C}},
},
},
}
for n, c := range testCases {
t.Run(n, func(t *testing.T) {
block, err := UnmarshalBlock(bytes.NewBuffer(c.input), int64(len(c.input)))
if err != nil {
t.Fatalf("Failed to unmarshal block: '%v'", err)
}
if !reflect.DeepEqual(c.expected, *block) {
t.Errorf("Expected unmarshal result: '%v', got: '%v'", c.expected, *block)
}
})
}
}
func TestUnmarshalBlock_Error(t *testing.T) {
t.Run("EOF", func(t *testing.T) {
input := []byte{0x21, 0x23, 0x45, 0x00, 0x02, 0x00}
for l := 0; l < len(input); l++ {
if _, err := UnmarshalBlock(bytes.NewBuffer(input[:l]), int64(len(input))); !errs.Is(err, io.ErrUnexpectedEOF) {
t.Errorf("Short data (%d bytes) expected error: '%v', got: '%v'",
l, io.ErrUnexpectedEOF, err)
}
}
})
testCases := map[string]struct {
input []byte
err error
}{
"UndivisibleFixedLace": {
[]byte{0x82, 0x00, 0x00, 0x04, 0x02, 0x00, 0x00},
ErrFixedLaceUndivisible,
},
}
for n, c := range testCases {
t.Run(n, func(t *testing.T) {
if _, err := UnmarshalBlock(bytes.NewBuffer(c.input), int64(len(c.input))); !errs.Is(err, c.err) {
t.Errorf("Expected error: '%v', got: '%v'", c.err, err)
}
})
}
}
func TestMarshalBlock(t *testing.T) {
testCases := map[string]struct {
input Block
expected []byte
}{
"Track1BKeyframeInvisible": {
Block{0x02, 0x0123, true, true, LacingNo, false, [][]byte{{0xAA, 0xCC}}},
[]byte{0x82, 0x01, 0x23, 0x88, 0xAA, 0xCC},
},
"Track2BDiscardable": {
Block{0x0213, 0x0123, false, false, LacingNo, true, [][]byte{{0x11, 0x22, 0x33}}},
[]byte{0x42, 0x13, 0x01, 0x23, 0x01, 0x11, 0x22, 0x33},
},
"Track3BNoData": {
Block{0x012345, 0x0002, false, false, LacingNo, false, [][]byte{{}}},
[]byte{0x21, 0x23, 0x45, 0x00, 0x02, 0x00},
},
}
for n, c := range testCases {
t.Run(n, func(t *testing.T) {
var b bytes.Buffer
if err := MarshalBlock(&c.input, &b); err != nil {
t.Fatalf("Failed to marshal block: '%v'", err)
}
if !reflect.DeepEqual(c.expected, b.Bytes()) {
t.Errorf("Expected marshal result: '%v', got: '%v'", c.expected, b.Bytes())
}
})
}
}
func TestMarshalBlock_Error(t *testing.T) {
cases := map[string]struct {
input *Block
err error
}{
"InvalidTrackNum": {
&Block{0xFFFFFFFFFFFFFFFF, 0x0000, false, false, LacingNo, false, [][]byte{{}}},
ErrUnsupportedElementID,
},
}
for name, c := range cases {
t.Run(name, func(t *testing.T) {
if err := MarshalBlock(c.input, &bytes.Buffer{}); !errs.Is(err, c.err) {
t.Errorf("Expected error: '%v', got: '%v'", c.err, err)
}
})
}
t.Run("EOF", func(t *testing.T) {
input := &Block{0x012345, 0x0002, false, false, LacingNo, false, [][]byte{{0x00}}} // 7 bytes
for l := 0; l < 7; l++ {
if err := MarshalBlock(input, &limitedDummyWriter{limit: l}); !errs.Is(err, bytes.ErrTooLarge) {
t.Errorf("Expected error against too large data (Writer size limit: %d): '%v', got: '%v'", l, bytes.ErrTooLarge, err)
}
}
})
}