package main

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestAdd(t *testing.T) {
	ml := NewMessageList(3)
	ml.Add(Message{Content: "1"})
	assert.Len(t, ml.list, 1)
	assert.Equal(t, ml.list[0].Content, "1")
	ml.Add(Message{Content: "2"})
	assert.Len(t, ml.list, 2)
	assert.Equal(t, ml.list[0].Content, "1")
	assert.Equal(t, ml.list[1].Content, "2")
	ml.Add(Message{Content: "3"})
	assert.Len(t, ml.list, 3)
	assert.Equal(t, ml.list[0].Content, "1")
	assert.Equal(t, ml.list[1].Content, "2")
	assert.Equal(t, ml.list[2].Content, "3")
	ml.Add(Message{Content: "4"})
	assert.Len(t, ml.list, 3)
	assert.Equal(t, ml.list[0].Content, "2")
	assert.Equal(t, ml.list[1].Content, "3")
	assert.Equal(t, ml.list[2].Content, "4")
	ml.Add(Message{Content: "5"})
	assert.Len(t, ml.list, 3)
	assert.Equal(t, ml.list[0].Content, "3")
	assert.Equal(t, ml.list[1].Content, "4")
	assert.Equal(t, ml.list[2].Content, "5")
	ml.Add(Message{Content: "6"})
	assert.Len(t, ml.list, 3)
	assert.Equal(t, ml.list[0].Content, "4")
	assert.Equal(t, ml.list[1].Content, "5")
	assert.Equal(t, ml.list[2].Content, "6")
}