Added test to Packets and more

internal/common/go.mod

@@ -4,4 +4,7 @@ go 1.21.1
 
 require golang.org/x/crypto v0.15.0
 
-require golang.org/x/sys v0.14.0 // indirect
+require (
+	github.com/google/go-cmp v0.6.0
+	golang.org/x/sys v0.14.0 // indirect
+)

internal/common/go.sum

@@ -1,3 +1,5 @@
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 golang.org/x/crypto v0.15.0 h1:frVn1TEaCEaZcn3Tmd7Y2b5KKPaZ+I32Q2OA3kYp5TA=
 golang.org/x/crypto v0.15.0/go.mod h1:4ChreQoLWfG3xLDer1WdlH5NdlQ3+mwnQq1YTKY+72g=
 golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=

internal/common/packets_test.go

@@ -0,0 +1,29 @@
+package common
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestPacketFromBytes(t *testing.T) {
+	sid := [8]byte{255, 255, 255, 255, 255, 255, 255, 255}
+	data := []byte{1, 0, 1}
+	dataLength := len(data)
+
+	want := Packet{
+		Flag:       Request,
+		Sync:       0,
+		Data:       data,
+		Sid:        sid,
+		DataLength: uint32(dataLength),
+	}
+
+	bytes := []byte{0, 0, 0, 0, 0, 1, 0, 1}
+
+	pck := PacketFromBytes(bytes, uint32(dataLength), sid)
+
+	if !cmp.Equal(pck, want) {
+		t.Fail()
+	}
+}