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package layers
import "testing"
func TestBitfield(t *testing.T) {
var b bitfield
const uint16Max = ^uint16(0)
for i := uint16(0); i < uint16Max; i++ {
if b.has(i) {
t.Errorf("b.has(%d) expected false, got true", i)
}
}
b.set(0)
if !b.has(0) {
t.Error("b.has(0) expected true, got false")
}
for i := uint16(1); i < uint16Max; i++ {
if b.has(i) {
t.Errorf("b.has(%d) expected false, got true", i)
}
}
}
func TestBitfieldStressTest(t *testing.T) {
for i := 0; i < 7; i++ {
var b bitfield
for j := i; j < 64*1024; j += 7 {
b.set(uint16(j))
}
for j := 0; j < 64&1024; j++ {
want := j%7 == i
if got := b.has(uint16(j)); got != want {
t.Errorf("Test %d bit %d: got %v want %v", i, j, got, want)
}
}
}
}
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