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recompute_heap_list_test.go
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recompute_heap_list_test.go
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package incr
import (
"testing"
"github.com/wcharczuk/go-incr/testutil"
)
func nodePtrID(n INode) Identifier {
if n == nil {
return zero
}
return n.Node().id
}
func rhnext(n INode) INode {
if n == nil {
return nil
}
return n.Node().nextInRecomputeHeap
}
func rhprev(n INode) INode {
if n == nil {
return nil
}
return n.Node().previousInRecomputeHeap
}
func Test_recomputeHeapList_push_pop(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 0)
n2 := newHeightIncr(g, 0)
n3 := newHeightIncr(g, 0)
var zeroID Identifier
id, n, ok := q.pop()
// Region: empty list
{
testutil.Equal(t, false, ok)
testutil.Nil(t, q.head)
testutil.Nil(t, q.tail)
testutil.Equal(t, zeroID, id)
testutil.Nil(t, n)
testutil.Equal(t, 0, q.len())
testutil.Equal(t, false, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
}
// Region: push 0
{
q.push(n0)
testutil.NotNil(t, q.head)
testutil.Nil(t, rhnext(q.head))
testutil.NotNil(t, q.tail)
testutil.Nil(t, rhprev(q.tail))
testutil.Equal(t, q.head, q.tail)
testutil.Equal(t, 1, q.len())
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
testutil.Equal(t, n0.n.id, nodePtrID(q.head))
testutil.Equal(t, n0.n.id, nodePtrID(q.tail))
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
}
// Region: push 1
{
q.push(n1)
testutil.NotNil(t, q.head)
testutil.Nil(t, rhprev(q.head))
testutil.NotNil(t, rhnext(q.head))
testutil.Nil(t, rhnext(rhnext(q.head)))
testutil.NotNil(t, q.tail)
testutil.NotNil(t, rhprev(q.tail))
testutil.Nil(t, rhprev(rhprev(q.tail)))
testutil.Nil(t, rhnext(q.tail))
testutil.NotEqual(t, q.head, q.tail)
testutil.Equal(t, rhnext(q.head), q.tail)
testutil.Equal(t, rhprev(q.tail), q.head)
testutil.Equal(t, 2, q.len())
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, true, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
testutil.Equal(t, n1.Node().id, nodePtrID(q.tail))
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, true, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
}
// Region: push 2
{
q.push(n2)
testutil.NotNil(t, q.head)
testutil.Nil(t, rhprev(q.head))
testutil.NotNil(t, rhnext(q.head))
testutil.NotNil(t, rhnext(rhnext(q.head)))
testutil.Nil(t, rhnext(rhnext(rhnext(q.head))))
testutil.Equal(t, rhnext(rhnext(q.head)), q.tail)
testutil.NotNil(t, q.tail)
testutil.NotNil(t, rhprev(q.tail))
testutil.NotNil(t, rhprev(rhprev(q.tail)))
testutil.Nil(t, rhprev(rhprev(rhprev(q.tail))))
testutil.Nil(t, rhnext(q.tail))
testutil.Equal(t, rhprev(rhprev(q.tail)), q.head)
testutil.NotEqual(t, q.head, q.tail)
testutil.Equal(t, 3, q.len())
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, true, q.has(n1.Node().id))
testutil.Equal(t, true, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n2.Node().id, nodePtrID(q.tail))
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, true, q.has(n1.Node().id))
testutil.Equal(t, true, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
}
// Region: push 3
{
q.push(n3)
testutil.NotNil(t, q.head)
testutil.Nil(t, rhprev(q.head))
testutil.NotNil(t, rhnext(q.head))
testutil.NotNil(t, rhnext(rhnext(q.head)))
testutil.NotNil(t, rhnext(rhnext(rhnext(q.head))))
testutil.Nil(t, rhnext(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, rhnext(rhnext(rhnext(q.head))), q.tail)
testutil.NotNil(t, q.tail)
testutil.NotNil(t, rhprev(q.tail))
testutil.NotNil(t, rhprev(rhprev(q.tail)))
testutil.NotNil(t, rhprev(rhprev(rhprev(q.tail))))
testutil.Nil(t, rhprev(rhprev(rhprev(rhprev(q.tail)))))
testutil.Nil(t, rhnext(q.tail))
testutil.Equal(t, rhprev(rhprev(rhprev(q.tail))), q.head)
testutil.NotEqual(t, q.head, q.tail)
testutil.Equal(t, 4, q.len())
testutil.Equal(t, true, q.has(n0.Node().id))
testutil.Equal(t, true, q.has(n1.Node().id))
testutil.Equal(t, true, q.has(n2.Node().id))
testutil.Equal(t, true, q.has(n3.Node().id))
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n3.Node().id, nodePtrID(q.tail))
}
// Region: pop 0
{
id, n, ok = q.pop()
testutil.Equal(t, true, ok)
testutil.Equal(t, n0.n.id, id)
testutil.Equal(t, n0.n.id, n.Node().id)
testutil.NotNil(t, q.head)
testutil.NotNil(t, rhnext(q.head))
testutil.NotNil(t, rhnext(rhnext(q.head)))
testutil.Nil(t, rhnext(rhnext(rhnext(q.head))))
testutil.Equal(t, rhnext(rhnext(q.head)), q.tail)
testutil.NotNil(t, q.tail)
testutil.NotEqual(t, q.head, q.tail)
testutil.Equal(t, 3, q.len())
testutil.Equal(t, false, q.has(n0.Node().id))
testutil.Equal(t, true, q.has(n1.Node().id))
testutil.Equal(t, true, q.has(n2.Node().id))
testutil.Equal(t, true, q.has(n3.Node().id))
testutil.Equal(t, n1.Node().id, nodePtrID(q.head))
testutil.Equal(t, n3.Node().id, nodePtrID(q.tail))
testutil.Nil(t, n.Node().nextInRecomputeHeap)
testutil.Nil(t, n.Node().previousInRecomputeHeap)
}
// Region: pop 1
{
id, n, ok = q.pop()
testutil.Equal(t, true, ok)
testutil.Equal(t, n1.n.id, id)
testutil.Equal(t, n1.n.id, n.Node().id)
testutil.NotNil(t, q.head)
testutil.NotNil(t, rhnext(q.head))
testutil.Nil(t, rhnext(rhnext(q.head)))
testutil.Equal(t, rhnext(q.head), q.tail)
testutil.NotNil(t, q.tail)
testutil.NotNil(t, rhprev(q.tail))
testutil.Nil(t, rhprev(rhprev(q.tail)))
testutil.Equal(t, rhprev(q.tail), q.head)
testutil.NotEqual(t, q.head, q.tail)
testutil.Equal(t, 2, q.len())
testutil.Equal(t, false, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, true, q.has(n2.Node().id))
testutil.Equal(t, true, q.has(n3.Node().id))
testutil.Equal(t, n2.n.id, nodePtrID(q.head))
testutil.Equal(t, n3.n.id, nodePtrID(q.tail))
testutil.Nil(t, n.Node().nextInRecomputeHeap)
testutil.Nil(t, n.Node().previousInRecomputeHeap)
}
// Region: pop 2
{
id, n, ok = q.pop()
testutil.Equal(t, true, ok)
testutil.Equal(t, n2.n.id, id)
testutil.Equal(t, n2.n.id, n.Node().id)
testutil.NotNil(t, q.head)
testutil.Nil(t, rhnext(q.head))
testutil.NotNil(t, q.tail)
testutil.Equal(t, q.head, q.tail)
testutil.Equal(t, 1, q.len())
testutil.Equal(t, n3.n.id, nodePtrID(q.head))
testutil.Equal(t, n3.n.id, nodePtrID(q.tail))
testutil.Equal(t, false, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, true, q.has(n3.Node().id))
testutil.Nil(t, n.Node().nextInRecomputeHeap)
testutil.Nil(t, n.Node().previousInRecomputeHeap)
}
// Region: pop 3
{
id, n, ok = q.pop()
testutil.Equal(t, true, ok)
testutil.Equal(t, n3.n.id, id)
testutil.Equal(t, n3.n.id, n.Node().id)
testutil.Nil(t, q.head)
testutil.Nil(t, q.tail)
testutil.Equal(t, 0, q.len())
testutil.Equal(t, false, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
testutil.Nil(t, n.Node().nextInRecomputeHeap)
testutil.Nil(t, n.Node().previousInRecomputeHeap)
}
// Region: pop empty
{
id, n, ok = q.pop()
testutil.Equal(t, false, ok)
testutil.Nil(t, n)
testutil.Equal(t, zeroID, id)
testutil.Equal(t, false, q.has(n0.Node().id))
testutil.Equal(t, false, q.has(n1.Node().id))
testutil.Equal(t, false, q.has(n2.Node().id))
testutil.Equal(t, false, q.has(n3.Node().id))
}
q.push(n0)
q.push(n1)
q.push(n2)
testutil.Equal(t, 3, q.len())
}
func Test_recomputeHeapList_remove_0(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
ok := q.remove(n0.Node().id)
testutil.Equal(t, true, ok)
testutil.Equal(t, 4, q.len())
testutil.NotNil(t, q.head)
testutil.Equal(t, nodePtrID(q.head), n1.n.id)
testutil.NotNil(t, q.tail)
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
testutil.Nil(t, n0.Node().nextInRecomputeHeap)
testutil.Nil(t, n0.Node().previousInRecomputeHeap)
testutil.Equal(t, n1.Node().id, nodePtrID(q.head))
testutil.Equal(t, n2.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n3.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n4.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, n4.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n3.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n1.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
}
func Test_recomputeHeapList_remove_1(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
ok := q.remove(n1.Node().id)
testutil.Equal(t, true, ok)
testutil.Equal(t, 4, q.len())
testutil.NotNil(t, q.head)
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, q.tail)
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
testutil.Nil(t, n1.Node().nextInRecomputeHeap)
testutil.Nil(t, n1.Node().previousInRecomputeHeap)
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n2.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n3.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n4.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, n4.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n3.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n0.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
}
func Test_recomputeHeapList_remove_2(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
ok := q.remove(n2.Node().id)
testutil.Equal(t, true, ok)
testutil.Equal(t, 4, q.len())
testutil.NotNil(t, q.head)
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, q.tail)
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
testutil.Nil(t, n2.Node().nextInRecomputeHeap)
testutil.Nil(t, n2.Node().previousInRecomputeHeap)
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n1.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n3.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n4.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, n4.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n3.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n1.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n0.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
}
func Test_recomputeHeapList_remove_3(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
ok := q.remove(n3.Node().id)
testutil.Equal(t, true, ok)
testutil.Equal(t, 4, q.len())
testutil.NotNil(t, q.head)
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, q.tail)
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
testutil.Nil(t, n3.Node().nextInRecomputeHeap)
testutil.Nil(t, n3.Node().previousInRecomputeHeap)
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n1.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n4.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, n4.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n2.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n1.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n0.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
}
func Test_recomputeHeapList_remove_4(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n4.n.id)
ok := q.remove(n4.Node().id)
testutil.Equal(t, true, ok)
testutil.Equal(t, 4, q.len())
testutil.NotNil(t, q.head)
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, q.tail)
testutil.Equal(t, nodePtrID(q.tail), n3.n.id)
testutil.Nil(t, n4.Node().nextInRecomputeHeap)
testutil.Nil(t, n4.Node().previousInRecomputeHeap)
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n1.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n3.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, n3.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n2.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n1.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n0.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
}
func Test_recomputeHeapList_remove_empty(t *testing.T) {
q := new(recomputeHeapList)
ok := q.remove(NewIdentifier())
testutil.Equal(t, false, ok)
}
func Test_recomputeHeapList_remove_notFound(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n3.n.id)
ok := q.remove(NewIdentifier())
testutil.Equal(t, false, ok)
}
func Test_recomputeHeapList_remove_head(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n3.n.id)
ok := q.remove(n0.Node().id)
testutil.Equal(t, ok, true)
testutil.NotNil(t, q.head)
testutil.Equal(t, nodePtrID(q.head), n1.n.id)
testutil.Nil(t, n0.Node().nextInRecomputeHeap)
testutil.Nil(t, n0.Node().previousInRecomputeHeap)
}
func Test_recomputeHeapList_remove_tail(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, nodePtrID(q.head), n0.n.id)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, nodePtrID(q.tail), n3.n.id)
ok := q.remove(n3.Node().id)
testutil.Equal(t, ok, true)
testutil.NotNil(t, q.tail)
testutil.Equal(t, nodePtrID(q.tail), n2.n.id)
testutil.Nil(t, n3.Node().nextInRecomputeHeap)
testutil.Nil(t, n3.Node().previousInRecomputeHeap)
}
func Test_recomputeHeapList_consume(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
var seenIDs []Identifier
var seen []INode
q.consume(func(v INode) {
seenIDs = append(seenIDs, v.Node().id)
seen = append(seen, v)
})
testutil.Equal(t, 0, q.len())
testutil.Nil(t, q.head)
testutil.Nil(t, q.tail)
testutil.Equal(t, 5, len(seenIDs))
testutil.Equal(t, 5, len(seen))
for _, n := range seen {
testutil.Nil(t, n.Node().nextInRecomputeHeap)
testutil.Nil(t, n.Node().previousInRecomputeHeap)
}
}
func Test_recomputeHeapList_removeHeadItem_full(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
n1 := newHeightIncr(g, 1)
n2 := newHeightIncr(g, 2)
n3 := newHeightIncr(g, 3)
n4 := newHeightIncr(g, 4)
q.push(n0)
q.push(n1)
q.push(n2)
q.push(n3)
q.push(n4)
testutil.NotNil(t, q.head)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.Equal(t, n1.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n3.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.Equal(t, n4.Node().id, nodePtrID(rhnext(rhnext(rhnext(rhnext(q.head))))))
testutil.NotNil(t, q.tail)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, n4.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n3.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n1.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
testutil.Equal(t, n0.Node().id, nodePtrID(rhprev(rhprev(rhprev(rhprev(q.tail))))))
q.removeHeadItem()
testutil.NotNil(t, q.head)
testutil.NotNil(t, rhnext(q.head))
testutil.Equal(t, n1.Node().id, nodePtrID(q.head))
testutil.Equal(t, n2.Node().id, nodePtrID(rhnext(q.head)))
testutil.Equal(t, n3.Node().id, nodePtrID(rhnext(rhnext(q.head))))
testutil.Equal(t, n4.Node().id, nodePtrID(rhnext(rhnext(rhnext(q.head)))))
testutil.NotNil(t, q.tail)
testutil.NotNil(t, rhprev(q.tail))
testutil.Equal(t, n4.Node().id, nodePtrID(q.tail))
testutil.Equal(t, n3.Node().id, nodePtrID(rhprev(q.tail)))
testutil.Equal(t, n2.Node().id, nodePtrID(rhprev(rhprev(q.tail))))
testutil.Equal(t, n1.Node().id, nodePtrID(rhprev(rhprev(rhprev(q.tail)))))
testutil.Nil(t, n0.Node().nextInRecomputeHeap)
testutil.Nil(t, n0.Node().previousInRecomputeHeap)
}
func Test_recomputeHeapList_removeHeadItem_one(t *testing.T) {
g := New()
q := new(recomputeHeapList)
n0 := newHeightIncr(g, 0)
q.push(n0)
testutil.NotNil(t, q.head)
testutil.Nil(t, rhnext(q.head))
testutil.Equal(t, n0.Node().id, nodePtrID(q.head))
testutil.NotNil(t, q.tail)
testutil.Nil(t, rhprev(q.tail))
testutil.Equal(t, n0.Node().id, nodePtrID(q.tail))
q.removeHeadItem()
testutil.Nil(t, q.head)
testutil.Nil(t, q.tail)
testutil.Nil(t, n0.Node().nextInRecomputeHeap)
testutil.Nil(t, n0.Node().previousInRecomputeHeap)
}