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package prioritybitmap
import (
"math"
"testing"
"github.com/stretchr/testify/assert"
"github.com/anacrolix/missinggo/iter"
)
func TestEmpty(t *testing.T) {
var pb PriorityBitmap
it := iter.NewIterator(&pb)
assert.Panics(t, func() { it.Value() })
assert.False(t, it.Next())
}
func TestIntBounds(t *testing.T) {
var pb PriorityBitmap
assert.True(t, pb.Set(math.MaxInt32, math.MinInt32))
assert.True(t, pb.Set(math.MinInt32, math.MaxInt32))
assert.EqualValues(t, []interface{}{math.MaxInt32, math.MinInt32}, iter.IterableAsSlice(&pb))
}
func TestDistinct(t *testing.T) {
var pb PriorityBitmap
assert.True(t, pb.Set(0, 0))
pb.Set(1, 1)
assert.EqualValues(t, []interface{}{0, 1}, iter.IterableAsSlice(&pb))
pb.Set(0, -1)
assert.EqualValues(t, []interface{}{0, 1}, iter.IterableAsSlice(&pb))
pb.Set(1, -2)
assert.EqualValues(t, []interface{}{1, 0}, iter.IterableAsSlice(&pb))
}
func TestNextAfterIterFinished(t *testing.T) {
var pb PriorityBitmap
pb.Set(0, 0)
it := iter.NewIterator(&pb)
assert.True(t, it.Next())
assert.False(t, it.Next())
assert.False(t, it.Next())
}
func TestMutationResults(t *testing.T) {
var pb PriorityBitmap
assert.False(t, pb.Remove(1))
assert.True(t, pb.Set(1, -1))
assert.True(t, pb.Set(1, 2))
assert.True(t, pb.Set(2, 2))
assert.True(t, pb.Set(2, -1))
assert.False(t, pb.Set(1, 2))
assert.EqualValues(t, []interface{}{2, 1}, iter.IterableAsSlice(&pb))
assert.True(t, pb.Set(1, -1))
assert.False(t, pb.Remove(0))
assert.True(t, pb.Remove(1))
assert.False(t, pb.Remove(0))
assert.False(t, pb.Remove(1))
assert.True(t, pb.Remove(2))
assert.False(t, pb.Remove(2))
assert.False(t, pb.Remove(0))
assert.True(t, pb.IsEmpty())
assert.Len(t, iter.IterableAsSlice(&pb), 0)
}
func TestDoubleRemove(t *testing.T) {
var pb PriorityBitmap
assert.True(t, pb.Set(0, 0))
assert.True(t, pb.Remove(0))
assert.False(t, pb.Remove(0))
}
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