add test for encoding packet header chunk

internal/encoders/packet_header_chunk_test.go

@@ -0,0 +1,42 @@
+package encoders
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"github.com/jwetzell/psn-go/internal/decoders"
+)
+
+func TestPacketHeaderChunkEncoding(t *testing.T) {
+	testCases := []struct {
+		description string
+		expected    []byte
+		data        decoders.PacketHeaderChunkData
+	}{
+		{
+			description: "PacketHeaderChunk",
+			expected: []byte{
+				0, 0, 12, 0, 210, 2, 150, 73, 0, 0, 0, 0, 2, 3, 1, 123,
+			},
+			data: decoders.PacketHeaderChunkData{
+				PacketTimestamp:  1234567890,
+				VersionHigh:      2,
+				VersionLow:       3,
+				FrameId:          1,
+				FramePacketCount: 123,
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+
+		actual := EncodePacketHeaderChunk(testCase.data.PacketTimestamp, testCase.data.VersionHigh, testCase.data.VersionLow, testCase.data.FrameId, testCase.data.FramePacketCount)
+
+		if !reflect.DeepEqual(actual, testCase.expected) {
+			t.Errorf("Test '%s' failed to encode chunk properly", testCase.description)
+			fmt.Printf("expected: %v\n", testCase.expected)
+			fmt.Printf("actual: %v\n", actual)
+		}
+	}
+}