163 lines
4.8 KiB
Go
163 lines
4.8 KiB
Go
// Copyright 2019 The ebml-go authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ebml
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import (
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"bytes"
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"io"
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"reflect"
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"testing"
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"git.gammaspectra.live/WeebDataHoarder/ebml-go/internal/errs"
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)
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func TestUnmarshalBlock(t *testing.T) {
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testCases := map[string]struct {
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input []byte
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expected Block
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}{
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"Track1BKeyframeInvisible": {
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[]byte{0x82, 0x01, 0x23, 0x88, 0xAA, 0xCC},
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Block{0x02, 0x0123, true, true, LacingNo, false, [][]byte{{0xAA, 0xCC}}},
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},
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"Track2BDiscardable": {
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[]byte{0x42, 0x13, 0x01, 0x23, 0x01, 0x11, 0x22, 0x33},
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Block{0x0213, 0x0123, false, false, LacingNo, true, [][]byte{{0x11, 0x22, 0x33}}},
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},
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"Track3BNoData": {
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[]byte{0x21, 0x23, 0x45, 0x00, 0x02, 0x00},
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Block{0x012345, 0x0002, false, false, LacingNo, false, [][]byte{{}}},
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},
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"FixedLace": {
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[]byte{0x82, 0x01, 0x23, 0x04, 0x02, 0x0A, 0x0B, 0x0C},
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Block{
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0x02, 0x0123, false, false, LacingFixed, false,
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[][]byte{{0x0A}, {0x0B}, {0x0C}},
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},
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},
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"XiphLace": {
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[]byte{0x82, 0x01, 0x23, 0x02, 0x02, 0x01, 0x02, 0x0A, 0x0B, 0x1B, 0x0C},
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Block{
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0x02, 0x0123, false, false, LacingXiph, false,
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[][]byte{{0x0A}, {0x0B, 0x1B}, {0x0C}},
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},
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},
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"EBMLLace": {
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[]byte{0x82, 0x01, 0x23, 0x06, 0x02, 0x81, 0xC0, 0x0A, 0x0B, 0x1B, 0x0C},
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Block{
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0x02, 0x0123, false, false, LacingEBML, false,
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[][]byte{{0x0A}, {0x0B, 0x1B}, {0x0C}},
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},
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},
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}
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for n, c := range testCases {
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t.Run(n, func(t *testing.T) {
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block, err := UnmarshalBlock(bytes.NewBuffer(c.input), int64(len(c.input)))
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if err != nil {
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t.Fatalf("Failed to unmarshal block: '%v'", err)
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}
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if !reflect.DeepEqual(c.expected, *block) {
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t.Errorf("Expected unmarshal result: '%v', got: '%v'", c.expected, *block)
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}
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})
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}
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}
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func TestUnmarshalBlock_Error(t *testing.T) {
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t.Run("EOF", func(t *testing.T) {
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input := []byte{0x21, 0x23, 0x45, 0x00, 0x02, 0x00}
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for l := 0; l < len(input); l++ {
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if _, err := UnmarshalBlock(bytes.NewBuffer(input[:l]), int64(len(input))); !errs.Is(err, io.ErrUnexpectedEOF) {
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t.Errorf("Short data (%d bytes) expected error: '%v', got: '%v'",
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l, io.ErrUnexpectedEOF, err)
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}
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}
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})
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testCases := map[string]struct {
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input []byte
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err error
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}{
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"UndivisibleFixedLace": {
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[]byte{0x82, 0x00, 0x00, 0x04, 0x02, 0x00, 0x00},
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ErrFixedLaceUndivisible,
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},
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}
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for n, c := range testCases {
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t.Run(n, func(t *testing.T) {
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if _, err := UnmarshalBlock(bytes.NewBuffer(c.input), int64(len(c.input))); !errs.Is(err, c.err) {
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t.Errorf("Expected error: '%v', got: '%v'", c.err, err)
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}
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})
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}
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}
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func TestMarshalBlock(t *testing.T) {
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testCases := map[string]struct {
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input Block
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expected []byte
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}{
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"Track1BKeyframeInvisible": {
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Block{0x02, 0x0123, true, true, LacingNo, false, [][]byte{{0xAA, 0xCC}}},
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[]byte{0x82, 0x01, 0x23, 0x88, 0xAA, 0xCC},
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},
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"Track2BDiscardable": {
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Block{0x0213, 0x0123, false, false, LacingNo, true, [][]byte{{0x11, 0x22, 0x33}}},
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[]byte{0x42, 0x13, 0x01, 0x23, 0x01, 0x11, 0x22, 0x33},
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},
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"Track3BNoData": {
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Block{0x012345, 0x0002, false, false, LacingNo, false, [][]byte{{}}},
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[]byte{0x21, 0x23, 0x45, 0x00, 0x02, 0x00},
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},
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}
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for n, c := range testCases {
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t.Run(n, func(t *testing.T) {
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var b bytes.Buffer
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if err := MarshalBlock(&c.input, &b); err != nil {
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t.Fatalf("Failed to marshal block: '%v'", err)
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}
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if !reflect.DeepEqual(c.expected, b.Bytes()) {
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t.Errorf("Expected marshal result: '%v', got: '%v'", c.expected, b.Bytes())
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}
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})
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}
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}
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func TestMarshalBlock_Error(t *testing.T) {
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cases := map[string]struct {
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input *Block
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err error
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}{
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"InvalidTrackNum": {
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&Block{0xFFFFFFFFFFFFFFFF, 0x0000, false, false, LacingNo, false, [][]byte{{}}},
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ErrUnsupportedElementID,
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},
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}
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for name, c := range cases {
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t.Run(name, func(t *testing.T) {
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if err := MarshalBlock(c.input, &bytes.Buffer{}); !errs.Is(err, c.err) {
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t.Errorf("Expected error: '%v', got: '%v'", c.err, err)
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}
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})
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}
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t.Run("EOF", func(t *testing.T) {
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input := &Block{0x012345, 0x0002, false, false, LacingNo, false, [][]byte{{0x00}}} // 7 bytes
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for l := 0; l < 7; l++ {
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if err := MarshalBlock(input, &limitedDummyWriter{limit: l}); !errs.Is(err, bytes.ErrTooLarge) {
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t.Errorf("Expected error against too large data (Writer size limit: %d): '%v', got: '%v'", l, bytes.ErrTooLarge, err)
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}
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}
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})
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}
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