// Insert, Len, IsEmpty, Hash, Clear, AppendTo.
func TestMoreBasics(t *testing.T) {
set := new(intsets.Sparse)
set.Insert(456)
set.Insert(123)
set.Insert(789)
if set.Len() != 3 {
t.Errorf("%s.Len: got %d, want 3", set, set.Len())
}
if set.IsEmpty() {
t.Errorf("%s.IsEmpty: got true", set)
}
if !set.Has(123) {
t.Errorf("%s.Has(123): got false", set)
}
if set.Has(1234) {
t.Errorf("%s.Has(1234): got true", set)
}
got := set.AppendTo([]int{-1})
if want := []int{-1, 123, 456, 789}; fmt.Sprint(got) != fmt.Sprint(want) {
t.Errorf("%s.AppendTo: got %v, want %v", set, got, want)
}
set.Clear()
if set.Len() != 0 {
t.Errorf("Clear: got %d, want 0", set.Len())
}
if !set.IsEmpty() {
t.Errorf("IsEmpty: got false")
}
if set.Has(123) {
t.Errorf("%s.Has: got false", set)
}
}
func BenchmarkAppendTo(b *testing.B) {
prng := rand.New(rand.NewSource(0))
var x intsets.Sparse
for i := 0; i < 1000; i++ {
x.Insert(int(prng.Int()) % 10000)
}
var space [1000]int
for tries := 0; tries < b.N; tries++ {
x.AppendTo(space[:0])
}
}