// Copyright (c) 2015, Emir Pasic. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package hashset

import (
	"testing"
)

func TestSetAdd(t *testing.T) {
	set := New()
	set.Add()
	set.Add(1)
	set.Add(2)
	set.Add(2, 3)
	set.Add()
	if actualValue := set.Empty(); actualValue != false {
		t.Errorf("Got %v expected %v", actualValue, false)
	}
	if actualValue := set.Size(); actualValue != 3 {
		t.Errorf("Got %v expected %v", actualValue, 3)
	}
}

func TestSetContains(t *testing.T) {
	set := New()
	set.Add(3, 1, 2)
	set.Add(2, 3)
	set.Add()
	if actualValue := set.Contains(); actualValue != true {
		t.Errorf("Got %v expected %v", actualValue, true)
	}
	if actualValue := set.Contains(1); actualValue != true {
		t.Errorf("Got %v expected %v", actualValue, true)
	}
	if actualValue := set.Contains(1, 2, 3); actualValue != true {
		t.Errorf("Got %v expected %v", actualValue, true)
	}
	if actualValue := set.Contains(1, 2, 3, 4); actualValue != false {
		t.Errorf("Got %v expected %v", actualValue, false)
	}
}

func TestSetRemove(t *testing.T) {
	set := New()
	set.Add(3, 1, 2)
	set.Remove()
	if actualValue := set.Size(); actualValue != 3 {
		t.Errorf("Got %v expected %v", actualValue, 3)
	}
	set.Remove(1)
	if actualValue := set.Size(); actualValue != 2 {
		t.Errorf("Got %v expected %v", actualValue, 2)
	}
	set.Remove(3)
	set.Remove(3)
	set.Remove()
	set.Remove(2)
	if actualValue := set.Size(); actualValue != 0 {
		t.Errorf("Got %v expected %v", actualValue, 0)
	}
}

func BenchmarkSet(b *testing.B) {
	for i := 0; i < b.N; i++ {
		set := New()
		for n := 0; n < 1000; n++ {
			set.Add(i)
		}
		for n := 0; n < 1000; n++ {
			set.Remove(n)
		}
	}
}