func TestRandomBagString(t *testing.T) {
var sizeTests = []struct {
bag bag.Bag
expected string
}{
{bag.RandomLinked(), "[]"},
{bag.RandomLinked().Add("Hello"), "[Hello]"},
}
for _, test := range sizeTests {
if fmt.Sprint(test.bag) != test.expected {
t.Errorf("String() for Bag: %v, expected: %v", test.bag, test.expected)
}
}
}
func TestRandomBagIsEmpty(t *testing.T) {
var isEmptyTests = []struct {
bag bag.Bag
expected bool // expected result
}{
{bag.RandomLinked(), true},
{bag.RandomLinked().Add("Hello"), false},
{bag.RandomLinked().Add("New York", "Stockholm", "London", "Paris"), false},
{bag.RandomLinked().Add("New York", 1.23, 1234567890, []int{1, 2, 3}), false},
}
for _, test := range isEmptyTests {
if test.bag.IsEmpty() != test.expected {
t.Errorf("IsEmpty() for Bag: %v, expected: %v, was: %v", test.bag, test.expected, test.bag.IsEmpty())
}
}
}
func TestRandomBagSize(t *testing.T) {
var sizeTests = []struct {
bag bag.Bag
expected int
}{
{bag.RandomLinked(), 0},
{bag.RandomLinked().Add("Hello"), 1},
{bag.RandomLinked().Add("New York", "Stockholm", "London", "Paris"), 4},
{bag.RandomLinked().Add("New York", 1.23, 1234567890, []int{1, 2, 3}), 4},
}
for _, test := range sizeTests {
if test.bag.Size() != test.expected {
t.Errorf("Size() for Bag: %v, expected: %v, was: %v", test.bag, test.expected, test.bag.Size())
}
}
}
func TestRandomBagForEachOne(t *testing.T) {
b := bag.RandomLinked().Add(5)
i := 0
b.ForEach(func(e interface{}) {
i++
if e != 5 {
t.Error("ForEach got wrong element: %v", e)
}
})
if i != 1 {
}
}
func TestRandomBagForEachMultiple(t *testing.T) {
b := bag.RandomLinked()
cities := map[string]int{
"NewBag York": 1,
"Stockholm": 1,
"London": 1,
"Paris": 1}
for city := range cities {
b.Add(city)
}
b.ForEach(func(e interface{}) {
cities[e.(string)]--
})
// Test that all cities in map were found
for city, count := range cities {
if count != 0 {
t.Errorf("Wrong count %d for city: %s", count, city)
}
}
}
func TestRandomBagForEachEmpty(t *testing.T) {
b := bag.RandomLinked()
b.ForEach(func(interface{}) {
t.Error("Empty bag ForEach called function")
})
}