deck_test.go

package cards

import (
	"testing"

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

func TestNewDeck(t *testing.T) {
	deck1 := NewDeck()
	deck2 := NewDeck()
	assert.Len(t, deck1.cards, 52)
	assert.Len(t, deck2.cards, 52)

	same := true
	for i := range deck1.cards {
		same = same && (deck1.cards[i] == deck2.cards[i])
	}
	assert.False(t, same)
}

func TestCopy(t *testing.T) {
	deck := NewDeck()
	deck2 := deck.Copy()
	assert.NotSame(t, deck, deck2)
	assert.EqualValues(t, deck, deck2)
}

func TestRemove(t *testing.T) {
	deck := NewDeck()
	c := NewCard("As")
	assert.Contains(t, deck.cards, c)
	deck.Remove(c)
	assert.NotContains(t, deck.cards, c)
}

func TestDraw(t *testing.T) {
	deck := NewDeck()

	cards := deck.Draw(5)
	assert.Len(t, cards, 5)
	assert.False(t, deck.Empty())

	deck.Draw(52 - 5)
	assert.True(t, deck.Empty())
}

func TestEmpty(t *testing.T) {
	deck := NewDeck()
	assert.False(t, deck.Empty())

	deck.Draw(51)
	assert.False(t, deck.Empty())

	deck.Draw(1)
	assert.True(t, deck.Empty())
}

func TestScanAndValue(t *testing.T) {
	deck := NewDeck()
	v, err := deck.Value()
	assert.Nil(t, err)
	deck2 := &Deck{}
	assert.Nil(t, deck2.Scan(v))
	assert.EqualValues(t, deck, deck2)
}