initial commit

2026-09-01 20:09:00 +00:00 · 2024-12-26 17:40:52 -06:00
commit 888ab65595
5 changed files with 409 additions and 0 deletions
@@ -0,0 +1,169 @@
+package ddp
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestPacketDecoding(t *testing.T) {
+	testCases := []struct {
+		description string
+		bytes       []byte
+		expected    DDPPacket
+	}{
+		{
+			description: "simple DDP message",
+			bytes:       []byte{0x40, 0x0f, 0x92, 0x01, 0x45, 0x67, 0x89, 0x10, 0x10, 0x11},
+			expected: DDPPacket{
+				Header: DDPHeader{
+					Flags: DDPHeaderFlags{
+						Version:  1,
+						Timecode: false,
+						Storage:  false,
+						Reply:    false,
+						Query:    false,
+						Push:     false,
+					},
+					SequenceNumber: 15,
+					DataType: DDPDataType{
+						Standard:     false,
+						Type:         2,
+						BitsPerPixel: 4,
+					},
+					SourceOrDestinationID: 1,
+					DataOffset:            1164413200,
+					DataLength:            4113,
+				},
+				Data: []byte{},
+			},
+		},
+		{
+			description: "DDP message with timecode",
+			bytes:       []byte{0x50, 0x0f, 0x92, 0x01, 0x45, 0x67, 0x89, 0x10, 0x10, 0x11, 0x10, 0x11, 0x11, 0x10},
+			expected: DDPPacket{
+				Header: DDPHeader{
+					Flags: DDPHeaderFlags{
+						Version:  1,
+						Timecode: true,
+						Storage:  false,
+						Reply:    false,
+						Query:    false,
+						Push:     false,
+					},
+					SequenceNumber: 15,
+					DataType: DDPDataType{
+						Standard:     false,
+						Type:         2,
+						BitsPerPixel: 4,
+					},
+					SourceOrDestinationID: 1,
+					DataOffset:            1164413200,
+					DataLength:            4113,
+					Timecode: &DDPTimecode{
+						Seconds:           4113,
+						FractionalSeconds: 4368,
+					},
+				},
+				Data: []byte{},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+
+		actual, err := Decode(testCase.bytes)
+
+		if err != nil {
+			t.Errorf("Test '%s' failed to decode chunk properly", testCase.description)
+			fmt.Println(err)
+		}
+
+		if !reflect.DeepEqual(actual, testCase.expected) {
+			t.Errorf("Test '%s' failed to decode chunk properly", testCase.description)
+			fmt.Printf("expected: %+v\n", testCase.expected)
+			fmt.Printf("actual: %+v\n", actual)
+		}
+	}
+}
+
+func TestPacketEncoding(t *testing.T) {
+	testCases := []struct {
+		description string
+		expected    []byte
+		packet      DDPPacket
+	}{
+		{
+			description: "simple DDP message",
+			expected:    []byte{0x40, 0x0f, 0x92, 0x01, 0x45, 0x67, 0x89, 0x10, 0x10, 0x11},
+			packet: DDPPacket{
+				Header: DDPHeader{
+					Flags: DDPHeaderFlags{
+						Version:  1,
+						Timecode: false,
+						Storage:  false,
+						Reply:    false,
+						Query:    false,
+						Push:     false,
+					},
+					SequenceNumber: 15,
+					DataType: DDPDataType{
+						Standard:     false,
+						Type:         2,
+						BitsPerPixel: 4,
+					},
+					SourceOrDestinationID: 1,
+					DataOffset:            1164413200,
+					DataLength:            4113,
+				},
+				Data: []byte{},
+			},
+		},
+		{
+			description: "DDP message with timecode",
+			expected:    []byte{0x50, 0x0f, 0x92, 0x01, 0x45, 0x67, 0x89, 0x10, 0x10, 0x11, 0x10, 0x11, 0x11, 0x10},
+			packet: DDPPacket{
+				Header: DDPHeader{
+					Flags: DDPHeaderFlags{
+						Version:  1,
+						Timecode: true,
+						Storage:  false,
+						Reply:    false,
+						Query:    false,
+						Push:     false,
+					},
+					SequenceNumber: 15,
+					DataType: DDPDataType{
+						Standard:     false,
+						Type:         2,
+						BitsPerPixel: 4,
+					},
+					SourceOrDestinationID: 1,
+					DataOffset:            1164413200,
+					DataLength:            4113,
+					Timecode: &DDPTimecode{
+						Seconds:           4113,
+						FractionalSeconds: 4368,
+					},
+				},
+				Data: []byte{},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+
+		actual, err := Encode(testCase.packet)
+
+		if err != nil {
+			t.Errorf("Test '%s' failed to decode chunk properly", testCase.description)
+			fmt.Println(err)
+		}
+
+		if !reflect.DeepEqual(actual, testCase.expected) {
+			t.Errorf("Test '%s' failed to decode chunk properly", testCase.description)
+			fmt.Printf("expected: %+v\n", testCase.expected)
+			fmt.Printf("actual: %+v\n", actual)
+		}
+	}
+}