history_test.go

package main

import (
	"reflect"
	"testing"
)

func TestHistory(t *testing.T) {
	var r, expected []string
	var size int

	h := NewHistory(5)

	r = h.Get(10)
	expected = []string{}
	if !reflect.DeepEqual(r, expected) {
		t.Errorf("Got: %v, Expected: %v", r, expected)
	}

	h.Add("1")

	if size = h.Len(); size != 1 {
		t.Errorf("Wrong size: %v", size)
	}

	r = h.Get(1)
	expected = []string{"1"}
	if !reflect.DeepEqual(r, expected) {
		t.Errorf("Got: %v, Expected: %v", r, expected)
	}

	h.Add("2")
	h.Add("3")
	h.Add("4")
	h.Add("5")
	h.Add("6")

	if size = h.Len(); size != 5 {
		t.Errorf("Wrong size: %v", size)
	}

	r = h.Get(2)
	expected = []string{"5", "6"}
	if !reflect.DeepEqual(r, expected) {
		t.Errorf("Got: %v, Expected: %v", r, expected)
	}

	r = h.Get(10)
	expected = []string{"2", "3", "4", "5", "6"}
	if !reflect.DeepEqual(r, expected) {
		t.Errorf("Got: %v, Expected: %v", r, expected)
	}
}