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decoder_test.go
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decoder_test.go
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package gltf
import (
"bytes"
"io"
"io/ioutil"
"reflect"
"testing"
"github.com/go-test/deep"
)
func readFile(path string) []byte {
r, _ := ioutil.ReadFile(path)
return r
}
func TestOpen(t *testing.T) {
deep.FloatPrecision = 5
type args struct {
name string
embedded string
}
tests := []struct {
args args
want *Document
wantErr bool
}{
{args{"openError", ""}, nil, true},
{args{"testdata/Cube/glTF/Cube.gltf", ""}, &Document{
Accessors: []*Accessor{
{BufferView: Index(0), ByteOffset: 0, ComponentType: ComponentUshort, Count: 36, Max: []float32{35}, Min: []float32{0}, Type: AccessorScalar},
{BufferView: Index(1), ByteOffset: 0, ComponentType: ComponentFloat, Count: 36, Max: []float32{1, 1, 1}, Min: []float32{-1, -1, -1}, Type: AccessorVec3},
{BufferView: Index(2), ByteOffset: 0, ComponentType: ComponentFloat, Count: 36, Max: []float32{1, 1, 1}, Min: []float32{-1, -1, -1}, Type: AccessorVec3},
{BufferView: Index(3), ByteOffset: 0, ComponentType: ComponentFloat, Count: 36, Max: []float32{1, 0, 0, 1}, Min: []float32{0, 0, -1, -1}, Type: AccessorVec4},
{BufferView: Index(4), ByteOffset: 0, ComponentType: ComponentFloat, Count: 36, Max: []float32{1, 1}, Min: []float32{-1, -1}, Type: AccessorVec2}},
Asset: Asset{Generator: "VKTS glTF 2.0 exporter", Version: "2.0"},
BufferViews: []*BufferView{
{Buffer: 0, ByteLength: 72, ByteOffset: 0, Target: TargetElementArrayBuffer},
{Buffer: 0, ByteLength: 432, ByteOffset: 72, Target: TargetArrayBuffer},
{Buffer: 0, ByteLength: 432, ByteOffset: 504, Target: TargetArrayBuffer},
{Buffer: 0, ByteLength: 576, ByteOffset: 936, Target: TargetArrayBuffer},
{Buffer: 0, ByteLength: 288, ByteOffset: 1512, Target: TargetArrayBuffer},
},
Buffers: []*Buffer{{ByteLength: 1800, URI: "Cube.bin", Data: readFile("testdata/Cube/glTF/Cube.bin")}},
Images: []*Image{{URI: "Cube_BaseColor.png"}, {URI: "Cube_MetallicRoughness.png"}},
Materials: []*Material{{Name: "Cube", AlphaMode: AlphaOpaque, AlphaCutoff: Float(0.5), PBRMetallicRoughness: &PBRMetallicRoughness{BaseColorFactor: &[4]float32{1, 1, 1, 1}, MetallicFactor: Float(1), RoughnessFactor: Float(1), BaseColorTexture: &TextureInfo{Index: 0}, MetallicRoughnessTexture: &TextureInfo{Index: 1}}}},
Meshes: []*Mesh{{Name: "Cube", Primitives: []*Primitive{{Indices: Index(0), Material: Index(0), Mode: PrimitiveTriangles, Attributes: map[string]uint32{"NORMAL": 2, "POSITION": 1, "TANGENT": 3, "TEXCOORD_0": 4}}}}},
Nodes: []*Node{{Mesh: Index(0), Name: "Cube", Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}}},
Samplers: []*Sampler{{WrapS: WrapRepeat, WrapT: WrapRepeat}},
Scene: Index(0),
Scenes: []*Scene{{Nodes: []uint32{0}}},
Textures: []*Texture{
{Sampler: Index(0), Source: Index(0)}, {Sampler: Index(0), Source: Index(1)},
},
}, false},
{args{"testdata/Cameras/glTF/Cameras.gltf", "testdata/Cameras/glTF-Embedded/Cameras.gltf"}, &Document{
Accessors: []*Accessor{
{BufferView: Index(0), ByteOffset: 0, ComponentType: ComponentUshort, Count: 6, Max: []float32{3}, Min: []float32{0}, Type: AccessorScalar},
{BufferView: Index(1), ByteOffset: 0, ComponentType: ComponentFloat, Count: 4, Max: []float32{1, 1, 0}, Min: []float32{0, 0, 0}, Type: AccessorVec3},
},
Asset: Asset{Version: "2.0"},
BufferViews: []*BufferView{
{Buffer: 0, ByteLength: 12, ByteOffset: 0, Target: TargetElementArrayBuffer},
{Buffer: 0, ByteLength: 48, ByteOffset: 12, Target: TargetArrayBuffer},
},
Buffers: []*Buffer{{ByteLength: 60, URI: "simpleSquare.bin", Data: readFile("testdata/Cameras/glTF/simpleSquare.bin")}},
Cameras: []*Camera{
{Perspective: &Perspective{AspectRatio: Float(1.0), Yfov: 0.7, Zfar: Float(100), Znear: 0.01}},
{Orthographic: &Orthographic{Xmag: 1.0, Ymag: 1.0, Zfar: 100, Znear: 0.01}},
},
Meshes: []*Mesh{{Primitives: []*Primitive{{Indices: Index(0), Mode: PrimitiveTriangles, Attributes: map[string]uint32{"POSITION": 1}}}}},
Nodes: []*Node{
{Mesh: Index(0), Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{-0.3, 0, 0, 0.9}, Scale: [3]float32{1, 1, 1}},
{Camera: Index(0), Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}, Translation: [3]float32{0.5, 0.5, 3.0}},
{Camera: Index(1), Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}, Translation: [3]float32{0.5, 0.5, 3.0}},
},
Scene: nil,
Scenes: []*Scene{{Nodes: []uint32{0, 1, 2}}},
}, false},
{args{"testdata/BoxVertexColors/glTF-Binary/BoxVertexColors.glb", ""}, &Document{
Accessors: []*Accessor{
{BufferView: Index(0), ByteOffset: 0, ComponentType: ComponentUshort, Count: 36, Type: AccessorScalar},
{BufferView: Index(1), ByteOffset: 0, ComponentType: ComponentFloat, Count: 24, Max: []float32{0.5, 0.5, 0.5}, Min: []float32{-0.5, -0.5, -0.5}, Type: AccessorVec3},
{BufferView: Index(2), ByteOffset: 0, ComponentType: ComponentFloat, Count: 24, Type: AccessorVec3},
{BufferView: Index(3), ByteOffset: 0, ComponentType: ComponentFloat, Count: 24, Type: AccessorVec4},
{BufferView: Index(4), ByteOffset: 0, ComponentType: ComponentFloat, Count: 24, Type: AccessorVec2},
},
Asset: Asset{Version: "2.0", Generator: "FBX2glTF"},
BufferViews: []*BufferView{
{Buffer: 0, ByteLength: 72, ByteOffset: 0, Target: TargetElementArrayBuffer},
{Buffer: 0, ByteLength: 288, ByteOffset: 72, Target: TargetArrayBuffer},
{Buffer: 0, ByteLength: 288, ByteOffset: 360, Target: TargetArrayBuffer},
{Buffer: 0, ByteLength: 384, ByteOffset: 648, Target: TargetArrayBuffer},
{Buffer: 0, ByteLength: 192, ByteOffset: 1032, Target: TargetArrayBuffer},
},
Buffers: []*Buffer{{ByteLength: 1224, Data: readFile("testdata/BoxVertexColors/glTF-Binary/BoxVertexColors.glb")[1628+20+8:]}},
Materials: []*Material{{Name: "Default", AlphaMode: AlphaOpaque, AlphaCutoff: Float(0.5), PBRMetallicRoughness: &PBRMetallicRoughness{BaseColorFactor: &[4]float32{0.8, 0.8, 0.8, 1}, MetallicFactor: Float(0.1), RoughnessFactor: Float(0.99)}}},
Meshes: []*Mesh{{Name: "Cube", Primitives: []*Primitive{{Indices: Index(0), Material: Index(0), Mode: PrimitiveTriangles, Attributes: map[string]uint32{"POSITION": 1, "COLOR_0": 3, "NORMAL": 2, "TEXCOORD_0": 4}}}}},
Nodes: []*Node{
{Name: "RootNode", Children: []uint32{1, 2, 3}, Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}},
{Name: "Mesh", Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}},
{Name: "Cube", Mesh: Index(0), Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}},
{Name: "Texture Group", Matrix: [16]float32{1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, Rotation: [4]float32{0, 0, 0, 1}, Scale: [3]float32{1, 1, 1}},
},
Samplers: []*Sampler{{WrapS: WrapRepeat, WrapT: WrapRepeat}},
Scene: Index(0),
Scenes: []*Scene{{Name: "Root Scene", Nodes: []uint32{0}}},
}, false},
}
for _, tt := range tests {
t.Run(tt.args.name, func(t *testing.T) {
got, err := Open(tt.args.name)
if (err != nil) != tt.wantErr {
t.Errorf("Open() error = %v, wantErr %v", err, tt.wantErr)
return
}
if diff := deep.Equal(got, tt.want); diff != nil {
t.Errorf("Open() = %v", diff)
return
}
if tt.args.embedded != "" {
got, err = Open(tt.args.embedded)
for i, b := range got.Buffers {
if b.IsEmbeddedResource() {
tt.want.Buffers[i].EmbeddedResource()
}
}
if (err != nil) != tt.wantErr {
t.Errorf("Open() error = %v, wantErr %v", err, tt.wantErr)
return
}
if diff := deep.Equal(got, tt.want); diff != nil {
t.Errorf("Open() = %v", diff)
return
}
}
})
}
}
type chunkedReader struct {
s []byte
n int
}
func (c *chunkedReader) Read(p []byte) (n int, err error) {
c.n++
if c.n == len(c.s)+1 {
return 0, io.EOF
}
p[0] = c.s[c.n-1 : c.n][0]
return 1, nil
}
type mockReadHandler struct {
Payload string
}
func (m mockReadHandler) ReadFullResource(uri string, data []byte) error {
copy(data, []byte(m.Payload))
return nil
}
func TestDecoder_decodeBuffer(t *testing.T) {
type args struct {
buffer *Buffer
}
tests := []struct {
name string
d *Decoder
args args
want []byte
wantErr bool
}{
{"byteLength_0", &Decoder{}, args{&Buffer{ByteLength: 0, URI: "a.bin"}}, nil, true},
{"noURI", &Decoder{}, args{&Buffer{ByteLength: 1, URI: ""}}, nil, true},
{"invalidURI", &Decoder{}, args{&Buffer{ByteLength: 1, URI: "../a.bin"}}, nil, true},
{"noSchemeErr", NewDecoder(nil), args{&Buffer{ByteLength: 3, URI: "ftp://a.bin"}}, nil, true},
{"base", NewDecoder(nil).WithReadHandler(&mockReadHandler{"abcdfg"}), args{&Buffer{ByteLength: 6, URI: "a.bin"}}, []byte("abcdfg"), false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if err := tt.d.decodeBuffer(tt.args.buffer); (err != nil) != tt.wantErr {
t.Errorf("Decoder.decodeBuffer() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(tt.args.buffer.Data, tt.want) {
t.Errorf("Decoder.decodeBuffer() buffer = %v, want %v", tt.args.buffer.Data, tt.want)
}
})
}
}
func TestDecoder_decodeBinaryBuffer(t *testing.T) {
type args struct {
buffer *Buffer
}
tests := []struct {
name string
d *Decoder
args args
want []byte
wantErr bool
}{
{"base", NewDecoder(bytes.NewBuffer([]byte{0x06, 0x00, 0x00, 0x00, 0x42, 0x49, 0x4e, 0x00, 1, 2, 3, 4, 5, 6})),
args{&Buffer{ByteLength: 6}}, []byte{1, 2, 3, 4, 5, 6}, false},
{"smallbuffer", NewDecoder(bytes.NewBuffer([]byte{0x6, 0x00, 0x00, 0x00, 0x42, 0x49, 0x4e, 0x00, 1, 2, 3, 4, 5, 6})),
args{&Buffer{ByteLength: 5}}, []byte{1, 2, 3, 4, 5}, false},
{"bigbuffer", NewDecoder(bytes.NewBuffer([]byte{0x6, 0x00, 0x00, 0x00, 0x42, 0x49, 0x4e, 0x00, 1, 2, 3, 4, 5, 6})),
args{&Buffer{ByteLength: 7}}, nil, true},
{"invalidBuffer", new(Decoder), args{&Buffer{ByteLength: 0}}, nil, true},
{"readErr", NewDecoder(bytes.NewBufferString("")), args{&Buffer{ByteLength: 1}}, nil, true},
{"invalidHeader", NewDecoder(bytes.NewBufferString("aaaaaaaa")), args{&Buffer{ByteLength: 1}}, nil, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if err := tt.d.decodeBinaryBuffer(tt.args.buffer); (err != nil) != tt.wantErr {
t.Errorf("Decoder.decodeBinaryBuffer() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(tt.args.buffer.Data, tt.want) {
t.Errorf("Decoder.decodeBinaryBuffer() buffer = %v, want %v", tt.args.buffer.Data, tt.want)
}
})
}
}
func TestDecoder_Decode(t *testing.T) {
type args struct {
doc *Document
}
tests := []struct {
name string
d *Decoder
args args
wantErr bool
}{
{"baseJSON", NewDecoder(bytes.NewBufferString("{\"buffers\": [{\"byteLength\": 1, \"URI\": \"a.bin\"}]}")).WithReadHandler(&mockReadHandler{"abcdfg"}), args{new(Document)}, false},
{"onlyGLBHeader", NewDecoder(bytes.NewBuffer([]byte{0x67, 0x6c, 0x54, 0x46, 0x02, 0x00, 0x00, 0x00, 0x40, 0x0b, 0x00, 0x00, 0x5c, 0x06, 0x00, 0x00, 0x4a, 0x53, 0x4f, 0x4e})).WithReadHandler(&mockReadHandler{"abcdfg"}), args{new(Document)}, true},
{"glbNoJSONChunk", NewDecoder(bytes.NewBuffer([]byte{0x67, 0x6c, 0x54, 0x46, 0x02, 0x00, 0x00, 0x00, 0x40, 0x0b, 0x00, 0x00, 0x5c, 0x06, 0x00, 0x00, 0x4a, 0x52, 0x4f, 0x4e})).WithReadHandler(&mockReadHandler{"abcdfg"}), args{new(Document)}, true},
{"empty", NewDecoder(bytes.NewBufferString("")), args{new(Document)}, true},
{"invalidJSON", NewDecoder(bytes.NewBufferString("{asset: {}}")), args{new(Document)}, true},
{"invalidBuffer", NewDecoder(bytes.NewBufferString("{\"buffers\": [{\"byteLength\": 0}]}")), args{new(Document)}, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if err := tt.d.Decode(tt.args.doc); (err != nil) != tt.wantErr {
t.Errorf("Decoder.Decode() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}
func TestDecoder_validateDocumentQuotas(t *testing.T) {
type args struct {
doc *Document
isBinary bool
}
tests := []struct {
name string
d *Decoder
args args
wantErr bool
}{
{
"exceedBuffers", &Decoder{MaxMemoryAllocation: 100000, MaxExternalBufferCount: 1},
args{&Document{Buffers: []*Buffer{{}, {}}}, false}, true,
}, {
"noExceedBuffers", &Decoder{MaxMemoryAllocation: 100000, MaxExternalBufferCount: 1},
args{&Document{Buffers: []*Buffer{{}, {}}}, true}, false,
}, {
"exceedAllocs", &Decoder{MaxMemoryAllocation: 10, MaxExternalBufferCount: 100},
args{&Document{Buffers: []*Buffer{{ByteLength: 11}}}, false}, true,
}, {
"noExceedAllocs", &Decoder{MaxMemoryAllocation: 11, MaxExternalBufferCount: 100},
args{&Document{Buffers: []*Buffer{{ByteLength: 11}}}, true}, false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if err := tt.d.validateDocumentQuotas(tt.args.doc, tt.args.isBinary); (err != nil) != tt.wantErr {
t.Errorf("Decoder.validateDocumentQuotas() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}