Function getRandomSameThreeContainers

runcontainer_test.go:2733–2764

generate random contents, then return that same logical content in three different container types

(tr trial)

// generate random contents, then return that same
// logical content in three different container types
func getRandomSameThreeContainers(tr trial) (*arrayContainer, *runContainer16, *bitmapContainer) {
	ma := make(map[int]bool)

	n := tr.n
	a := []uint16{}

	var samp interval16
	if tr.srang != nil {
		samp = *tr.srang
	} else {
		if n-1 > MaxUint16 {
			panic(fmt.Errorf("n out of range: %v", n))
		}
		samp.start = 0
		samp.length = uint16(n - 2)
	}

	draw := int(float64(n) * tr.percentFill)
	for i := 0; i < draw; i++ {
		r0 := int(samp.start) + rand.Intn(samp.runlen())
		a = append(a, uint16(r0))
		ma[r0] = true
	}

	rc := newRunContainer16FromVals(false, a...)

	// vs bitmapContainer
	bc := newBitmapContainerFromRun(rc)
	ac := rc.toArrayContainer()

	return ac, rc, bc
}