package xbee

import (
	"bytes"
	"reflect"
	"testing"
)

func Test_xbeeFrameSplit(t *testing.T) {
	type args struct {
		data  []byte
		atEOF bool
	}
	tests := []struct {
		name        string
		args        args
		wantAdvance int
		wantToken   []byte
		wantErr     bool
	}{
		// TODO: Add test cases.
		{
			name: "empty data",
			args: args{
				data:  []byte{},
				atEOF: false,
			},
			wantAdvance: 0,
			wantToken:   nil,
			wantErr:     false,
		},
		{
			name: "no start delimiter",
			args: args{
				data:  []byte{0x11, 0x22, 0x23, 0x44, 0x44, 0x77, 0x33},
				atEOF: false,
			},
			wantAdvance: 7,
			wantToken:   nil,
			wantErr:     false,
		},
		{
			name: "incomplete packet",
			args: args{
				data:  []byte{0x7E, 0x00, 0x02, 0x23, 0x11},
				atEOF: false,
			},
			wantAdvance: 0,
			wantToken:   nil,
			wantErr:     false,
		},
		{
			name: "valid packet",
			args: args{
				data:  []byte{0x7E, 0x00, 0x02, 0x23, 0x11, 0xCB},
				atEOF: false,
			},
			wantAdvance: 6,
			wantToken:   []byte{0x7E, 0x00, 0x02, 0x23, 0x11, 0xCB},
			wantErr:     false,
		},
		{
			name: "valid packet w/ padding",
			args: args{
				data:  []byte{0x00, 0x7E, 0x00, 0x02, 0x23, 0x11, 0xCB, 0x00},
				atEOF: false,
			},
			wantAdvance: 7,
			wantToken:   []byte{0x7E, 0x00, 0x02, 0x23, 0x11, 0xCB},
			wantErr:     false,
		},
		{
			name: "trailing start delimiter",
			args: args{
				data:  []byte{0x53, 0x00, 0x02, 0x23, 0x11, 0x7E},
				atEOF: false,
			},
			wantAdvance: 5,
			wantToken:   nil,
			wantErr:     false,
		},
		{
			name: "incomplete length value",
			args: args{
				data:  []byte{0x53, 0x00, 0x02, 0x23, 0x11, 0x7E, 0x00},
				atEOF: false,
			},
			wantAdvance: 5,
			wantToken:   nil,
			wantErr:     false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			gotAdvance, gotToken, err := xbeeFrameSplit(tt.args.data, tt.args.atEOF)
			if (err != nil) != tt.wantErr {
				t.Errorf("xbeeFrameSplit() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if gotAdvance != tt.wantAdvance {
				t.Errorf("xbeeFrameSplit() gotAdvance = %v, want %v", gotAdvance, tt.wantAdvance)
			}
			if !reflect.DeepEqual(gotToken, tt.wantToken) {
				t.Errorf("xbeeFrameSplit() gotToken = %v, want %v", gotToken, tt.wantToken)
			}
		})
	}
}

func TestWriteFrame(t *testing.T) {
	type args struct {
		cmd Frameable
	}
	tests := []struct {
		name    string
		args    args
		wantN   int
		wantW   string
		wantErr bool
	}{
		// TODO: Add test cases.
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			w := &bytes.Buffer{}
			gotN, err := WriteFrame(w, tt.args.cmd)
			if (err != nil) != tt.wantErr {
				t.Errorf("WriteFrame() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if gotN != tt.wantN {
				t.Errorf("WriteFrame() = %v, want %v", gotN, tt.wantN)
			}
			if gotW := w.String(); gotW != tt.wantW {
				t.Errorf("WriteFrame() = %v, want %v", gotW, tt.wantW)
			}
		})
	}
}