package main

import (
	"encoding/json"
	"testing"
)

func TestResizeMsgParsing(t *testing.T) {
	msg := `{"type":"resize","cols":120,"rows":40}`
	var r resizeMsg
	if err := json.Unmarshal([]byte(msg), &r); err != nil {
		t.Fatal(err)
	}
	if r.Type != "resize" {
		t.Errorf("got type %q", r.Type)
	}
	if r.Cols != 120 {
		t.Errorf("got cols %d", r.Cols)
	}
	if r.Rows != 40 {
		t.Errorf("got rows %d", r.Rows)
	}
}

func TestResizeMsgNotInput(t *testing.T) {
	// Regular keyboard input should NOT parse as resize
	msg := []byte("hello")
	var r resizeMsg
	err := json.Unmarshal(msg, &r)
	if err == nil && r.Type == "resize" {
		t.Error("regular input should not parse as resize")
	}
}