861 lines
17 KiB
Go
861 lines
17 KiB
Go
package ranges
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import (
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"fmt"
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"math/rand"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestRangeEnd(t *testing.T) {
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assert.Equal(t, int64(3), Range{Pos: 1, Size: 2}.End())
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}
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func TestRangeIsEmpty(t *testing.T) {
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assert.Equal(t, false, Range{Pos: 1, Size: 2}.IsEmpty())
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assert.Equal(t, true, Range{Pos: 1, Size: 0}.IsEmpty())
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assert.Equal(t, true, Range{Pos: 1, Size: -1}.IsEmpty())
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}
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func TestRangeClip(t *testing.T) {
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r := Range{Pos: 1, Size: 2}
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r.Clip(5)
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assert.Equal(t, Range{Pos: 1, Size: 2}, r)
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r = Range{Pos: 1, Size: 6}
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r.Clip(5)
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assert.Equal(t, Range{Pos: 1, Size: 4}, r)
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r = Range{Pos: 5, Size: 6}
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r.Clip(5)
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assert.Equal(t, Range{Pos: 5, Size: 0}, r)
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r = Range{Pos: 7, Size: 6}
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r.Clip(5)
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assert.Equal(t, Range{Pos: 0, Size: 0}, r)
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}
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func TestRangeIntersection(t *testing.T) {
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for _, test := range []struct {
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r Range
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b Range
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want Range
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}{
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{
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r: Range{1, 1},
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b: Range{3, 1},
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want: Range{},
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},
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{
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r: Range{1, 1},
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b: Range{1, 1},
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want: Range{1, 1},
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},
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{
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r: Range{1, 9},
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b: Range{3, 2},
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want: Range{3, 2},
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},
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{
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r: Range{1, 5},
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b: Range{3, 5},
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want: Range{3, 3},
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},
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} {
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what := fmt.Sprintf("test r=%v, b=%v", test.r, test.b)
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got := test.r.Intersection(test.b)
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assert.Equal(t, test.want, got, what)
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got = test.b.Intersection(test.r)
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assert.Equal(t, test.want, got, what)
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}
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}
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func TestRangeMerge(t *testing.T) {
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for _, test := range []struct {
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new Range
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dst Range
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want Range
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wantMerged bool
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}{
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{
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new: Range{Pos: 1, Size: 1}, // .N.......
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 3, Size: 3}, // ...DDD...
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wantMerged: false,
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},
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{
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new: Range{Pos: 1, Size: 2}, // .NN......
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 1, Size: 5}, // .XXXXX...
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wantMerged: true,
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},
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{
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new: Range{Pos: 1, Size: 3}, // .NNN.....
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 1, Size: 5}, // .XXXXX...
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wantMerged: true,
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},
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{
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new: Range{Pos: 1, Size: 5}, // .NNNNN...
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 1, Size: 5}, // .XXXXX...
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wantMerged: true,
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},
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{
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new: Range{Pos: 1, Size: 6}, // .NNNNNN..
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 1, Size: 6}, // .XXXXXX..
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wantMerged: true,
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},
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{
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new: Range{Pos: 3, Size: 3}, // ...NNN...
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 3, Size: 3}, // ...XXX...
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wantMerged: true,
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},
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{
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new: Range{Pos: 3, Size: 2}, // ...NN....
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 3, Size: 3}, // ...XXX...
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wantMerged: true,
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},
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{
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new: Range{Pos: 3, Size: 4}, // ...NNNN..
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dst: Range{Pos: 3, Size: 3}, // ...DDD...
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want: Range{Pos: 3, Size: 4}, // ...XXXX..
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wantMerged: true,
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},
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} {
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what := fmt.Sprintf("test new=%v, dst=%v", test.new, test.dst)
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gotMerged := merge(&test.new, &test.dst)
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assert.Equal(t, test.wantMerged, gotMerged)
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assert.Equal(t, test.want, test.dst, what)
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}
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}
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func checkRanges(t *testing.T, rs Ranges, what string) bool {
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if len(rs) < 2 {
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return true
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}
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ok := true
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for i := 0; i < len(rs)-1; i++ {
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a := rs[i]
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b := rs[i+1]
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if a.Pos >= b.Pos {
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assert.Failf(t, "%s: Ranges in wrong order at %d in: %v", what, i, rs)
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ok = false
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}
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if a.End() > b.Pos {
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assert.Failf(t, "%s: Ranges overlap at %d in: %v", what, i, rs)
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ok = false
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}
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if a.End() == b.Pos {
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assert.Failf(t, "%s: Ranges not coalesced at %d in: %v", what, i, rs)
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ok = false
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}
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}
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return ok
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}
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func TestRangeCoalesce(t *testing.T) {
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for _, test := range []struct {
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rs Ranges
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i int
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want Ranges
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}{
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{
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rs: Ranges{},
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want: Ranges{},
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},
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{
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rs: Ranges{
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{Pos: 1, Size: 1},
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},
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want: Ranges{
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{Pos: 1, Size: 1},
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},
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i: 0,
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},
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{
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rs: Ranges{
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{Pos: 1, Size: 1},
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{Pos: 2, Size: 1},
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{Pos: 3, Size: 1},
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},
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want: Ranges{
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{Pos: 1, Size: 3},
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},
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i: 0,
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},
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{
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rs: Ranges{
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{Pos: 1, Size: 1},
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{Pos: 3, Size: 1},
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{Pos: 4, Size: 1},
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{Pos: 5, Size: 1},
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},
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want: Ranges{
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{Pos: 1, Size: 1},
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{Pos: 3, Size: 3},
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},
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i: 2,
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},
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{
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rs: Ranges{{38, 8}, {51, 10}, {60, 3}},
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want: Ranges{{38, 8}, {51, 12}},
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i: 1,
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},
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} {
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got := append(Ranges{}, test.rs...)
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got.coalesce(test.i)
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what := fmt.Sprintf("test rs=%v, i=%d", test.rs, test.i)
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assert.Equal(t, test.want, got, what)
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checkRanges(t, got, what)
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}
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}
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func TestRangeInsert(t *testing.T) {
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for _, test := range []struct {
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new Range
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rs Ranges
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want Ranges
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}{
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{
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new: Range{Pos: 1, Size: 0},
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rs: Ranges{},
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want: Ranges(nil),
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},
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{
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new: Range{Pos: 1, Size: 1}, // .N.......
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rs: Ranges{}, // .........
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want: Ranges{ // .N.......
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{Pos: 1, Size: 1},
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},
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},
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{
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new: Range{Pos: 1, Size: 1}, // .N.......
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rs: Ranges{{Pos: 5, Size: 1}}, // .....R...
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want: Ranges{ // .N...R...
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{Pos: 1, Size: 1},
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{Pos: 5, Size: 1},
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},
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},
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{
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new: Range{Pos: 5, Size: 1}, // .....R...
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rs: Ranges{{Pos: 1, Size: 1}}, // .N.......
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want: Ranges{ // .N...R...
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{Pos: 1, Size: 1},
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{Pos: 5, Size: 1},
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},
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},
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{
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new: Range{Pos: 1, Size: 1}, // .N.......
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rs: Ranges{{Pos: 2, Size: 1}}, // ..R......
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want: Ranges{ // .XX......
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{Pos: 1, Size: 2},
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},
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},
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{
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new: Range{Pos: 2, Size: 1}, // ..N.......
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rs: Ranges{{Pos: 1, Size: 1}}, // .R......
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want: Ranges{ // .XX......
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{Pos: 1, Size: 2},
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},
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},
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{
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new: Range{Pos: 51, Size: 10},
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rs: Ranges{{38, 8}, {57, 2}, {60, 3}},
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want: Ranges{{38, 8}, {51, 12}},
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},
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} {
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got := append(Ranges(nil), test.rs...)
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got.Insert(test.new)
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what := fmt.Sprintf("test new=%v, rs=%v", test.new, test.rs)
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assert.Equal(t, test.want, got, what)
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checkRanges(t, test.rs, what)
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checkRanges(t, got, what)
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}
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}
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func TestRangeInsertRandom(t *testing.T) {
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for i := 0; i < 100; i++ {
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var rs Ranges
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for j := 0; j < 100; j++ {
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var r = Range{
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Pos: rand.Int63n(100),
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Size: rand.Int63n(10) + 1,
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}
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what := fmt.Sprintf("inserting %v into %v\n", r, rs)
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rs.Insert(r)
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if !checkRanges(t, rs, what) {
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break
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}
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//fmt.Printf("%d: %d: %v\n", i, j, rs)
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}
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}
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}
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func TestRangeFind(t *testing.T) {
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for _, test := range []struct {
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rs Ranges
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r Range
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wantCurr Range
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wantNext Range
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wantPresent bool
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}{
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{
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r: Range{Pos: 1, Size: 0},
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rs: Ranges{},
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wantCurr: Range{Pos: 1, Size: 0},
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wantNext: Range{},
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wantPresent: false,
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},
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{
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r: Range{Pos: 1, Size: 1},
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rs: Ranges{},
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wantCurr: Range{Pos: 1, Size: 1},
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wantNext: Range{},
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wantPresent: false,
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},
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{
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r: Range{Pos: 1, Size: 2},
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rs: Ranges{
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Range{Pos: 1, Size: 10},
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},
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wantCurr: Range{Pos: 1, Size: 2},
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wantNext: Range{Pos: 3, Size: 0},
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wantPresent: true,
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},
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{
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r: Range{Pos: 1, Size: 10},
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rs: Ranges{
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Range{Pos: 1, Size: 2},
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},
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wantCurr: Range{Pos: 1, Size: 2},
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wantNext: Range{Pos: 3, Size: 8},
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wantPresent: true,
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},
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{
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r: Range{Pos: 1, Size: 2},
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rs: Ranges{
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Range{Pos: 5, Size: 2},
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},
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wantCurr: Range{Pos: 1, Size: 2},
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wantNext: Range{Pos: 0, Size: 0},
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wantPresent: false,
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},
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{
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r: Range{Pos: 2, Size: 10},
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rs: Ranges{
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Range{Pos: 1, Size: 2},
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},
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wantCurr: Range{Pos: 2, Size: 1},
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wantNext: Range{Pos: 3, Size: 9},
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wantPresent: true,
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},
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{
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r: Range{Pos: 1, Size: 9},
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rs: Ranges{
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Range{Pos: 2, Size: 1},
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Range{Pos: 4, Size: 1},
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},
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wantCurr: Range{Pos: 1, Size: 1},
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wantNext: Range{Pos: 2, Size: 8},
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wantPresent: false,
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},
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{
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r: Range{Pos: 2, Size: 8},
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rs: Ranges{
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Range{Pos: 2, Size: 1},
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Range{Pos: 4, Size: 1},
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},
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wantCurr: Range{Pos: 2, Size: 1},
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wantNext: Range{Pos: 3, Size: 7},
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wantPresent: true,
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},
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{
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r: Range{Pos: 3, Size: 7},
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rs: Ranges{
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Range{Pos: 2, Size: 1},
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Range{Pos: 4, Size: 1},
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},
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wantCurr: Range{Pos: 3, Size: 1},
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wantNext: Range{Pos: 4, Size: 6},
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wantPresent: false,
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},
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{
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r: Range{Pos: 4, Size: 6},
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rs: Ranges{
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Range{Pos: 2, Size: 1},
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Range{Pos: 4, Size: 1},
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},
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wantCurr: Range{Pos: 4, Size: 1},
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wantNext: Range{Pos: 5, Size: 5},
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wantPresent: true,
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},
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{
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r: Range{Pos: 5, Size: 5},
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rs: Ranges{
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Range{Pos: 2, Size: 1},
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Range{Pos: 4, Size: 1},
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},
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wantCurr: Range{Pos: 5, Size: 5},
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wantNext: Range{Pos: 0, Size: 0},
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wantPresent: false,
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},
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} {
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what := fmt.Sprintf("test r=%v, rs=%v", test.r, test.rs)
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checkRanges(t, test.rs, what)
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gotCurr, gotNext, gotPresent := test.rs.Find(test.r)
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assert.Equal(t, test.r.Pos, gotCurr.Pos, what)
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assert.Equal(t, test.wantCurr, gotCurr, what)
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assert.Equal(t, test.wantNext, gotNext, what)
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assert.Equal(t, test.wantPresent, gotPresent, what)
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}
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}
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func TestRangeFindAll(t *testing.T) {
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for _, test := range []struct {
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rs Ranges
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r Range
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want []FoundRange
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wantNext Range
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wantPresent bool
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}{
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{
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r: Range{Pos: 1, Size: 0},
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rs: Ranges{},
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want: []FoundRange(nil),
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},
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{
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r: Range{Pos: 1, Size: 1},
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rs: Ranges{},
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want: []FoundRange{
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{
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R: Range{Pos: 1, Size: 1},
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Present: false,
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},
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},
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},
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{
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r: Range{Pos: 1, Size: 2},
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rs: Ranges{
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Range{Pos: 1, Size: 10},
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},
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want: []FoundRange{
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{
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R: Range{Pos: 1, Size: 2},
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Present: true,
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},
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},
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},
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{
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r: Range{Pos: 1, Size: 10},
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rs: Ranges{
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Range{Pos: 1, Size: 2},
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},
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want: []FoundRange{
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{
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R: Range{Pos: 1, Size: 2},
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Present: true,
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},
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{
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R: Range{Pos: 3, Size: 8},
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Present: false,
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},
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},
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},
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{
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r: Range{Pos: 5, Size: 5},
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rs: Ranges{
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Range{Pos: 4, Size: 2},
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Range{Pos: 7, Size: 1},
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Range{Pos: 9, Size: 2},
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},
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want: []FoundRange{
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{
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R: Range{Pos: 5, Size: 1},
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Present: true,
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},
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{
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R: Range{Pos: 6, Size: 1},
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Present: false,
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},
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{
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R: Range{Pos: 7, Size: 1},
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Present: true,
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},
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{
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R: Range{Pos: 8, Size: 1},
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Present: false,
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},
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{
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R: Range{Pos: 9, Size: 1},
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Present: true,
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},
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},
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},
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} {
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what := fmt.Sprintf("test r=%v, rs=%v", test.r, test.rs)
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checkRanges(t, test.rs, what)
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got := test.rs.FindAll(test.r)
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assert.Equal(t, test.want, got, what)
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}
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}
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func TestRangePresent(t *testing.T) {
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for _, test := range []struct {
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rs Ranges
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r Range
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wantPresent bool
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}{
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{
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r: Range{Pos: 1, Size: 0},
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rs: Ranges{},
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wantPresent: true,
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},
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{
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r: Range{Pos: 1, Size: 0},
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rs: Ranges(nil),
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wantPresent: true,
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},
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{
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r: Range{Pos: 0, Size: 1},
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rs: Ranges{},
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wantPresent: false,
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},
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{
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r: Range{Pos: 0, Size: 1},
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rs: Ranges(nil),
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wantPresent: false,
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},
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{
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r: Range{Pos: 1, Size: 2},
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rs: Ranges{
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Range{Pos: 1, Size: 1},
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},
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wantPresent: false,
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},
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{
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r: Range{Pos: 1, Size: 2},
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rs: Ranges{
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Range{Pos: 1, Size: 2},
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},
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wantPresent: true,
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},
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{
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r: Range{Pos: 1, Size: 2},
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rs: Ranges{
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Range{Pos: 1, Size: 10},
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},
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wantPresent: true,
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},
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{
|
|
r: Range{Pos: 1, Size: 2},
|
|
rs: Ranges{
|
|
Range{Pos: 5, Size: 2},
|
|
},
|
|
wantPresent: false,
|
|
},
|
|
{
|
|
r: Range{Pos: 1, Size: 9},
|
|
rs: Ranges{
|
|
Range{Pos: 2, Size: 1},
|
|
Range{Pos: 4, Size: 1},
|
|
},
|
|
wantPresent: false,
|
|
},
|
|
{
|
|
r: Range{Pos: 2, Size: 8},
|
|
rs: Ranges{
|
|
Range{Pos: 2, Size: 1},
|
|
Range{Pos: 4, Size: 1},
|
|
},
|
|
wantPresent: false,
|
|
},
|
|
{
|
|
r: Range{Pos: 3, Size: 7},
|
|
rs: Ranges{
|
|
Range{Pos: 2, Size: 1},
|
|
Range{Pos: 4, Size: 1},
|
|
},
|
|
wantPresent: false,
|
|
},
|
|
{
|
|
r: Range{Pos: 4, Size: 6},
|
|
rs: Ranges{
|
|
Range{Pos: 2, Size: 1},
|
|
Range{Pos: 4, Size: 1},
|
|
},
|
|
wantPresent: false,
|
|
},
|
|
{
|
|
r: Range{Pos: 5, Size: 5},
|
|
rs: Ranges{
|
|
Range{Pos: 2, Size: 1},
|
|
Range{Pos: 4, Size: 1},
|
|
},
|
|
wantPresent: false,
|
|
},
|
|
} {
|
|
what := fmt.Sprintf("test r=%v, rs=%v", test.r, test.rs)
|
|
checkRanges(t, test.rs, what)
|
|
gotPresent := test.rs.Present(test.r)
|
|
assert.Equal(t, test.wantPresent, gotPresent, what)
|
|
checkRanges(t, test.rs, what)
|
|
}
|
|
}
|
|
|
|
func TestRangesIntersection(t *testing.T) {
|
|
for _, test := range []struct {
|
|
rs Ranges
|
|
r Range
|
|
want Ranges
|
|
}{
|
|
{
|
|
rs: Ranges(nil),
|
|
r: Range{},
|
|
want: Ranges(nil),
|
|
},
|
|
{
|
|
rs: Ranges{},
|
|
r: Range{},
|
|
want: Ranges{},
|
|
},
|
|
{
|
|
rs: Ranges{},
|
|
r: Range{Pos: 1, Size: 0},
|
|
want: Ranges{},
|
|
},
|
|
{
|
|
rs: Ranges{},
|
|
r: Range{Pos: 1, Size: 1},
|
|
want: Ranges{},
|
|
},
|
|
{
|
|
rs: Ranges{{Pos: 1, Size: 5}},
|
|
r: Range{Pos: 1, Size: 3},
|
|
want: Ranges{
|
|
{Pos: 1, Size: 3},
|
|
},
|
|
},
|
|
{
|
|
rs: Ranges{{Pos: 1, Size: 5}},
|
|
r: Range{Pos: 1, Size: 10},
|
|
want: Ranges{
|
|
{Pos: 1, Size: 5},
|
|
},
|
|
},
|
|
{
|
|
rs: Ranges{{Pos: 1, Size: 5}},
|
|
r: Range{Pos: 3, Size: 10},
|
|
want: Ranges{
|
|
{Pos: 3, Size: 3},
|
|
},
|
|
},
|
|
{
|
|
rs: Ranges{{Pos: 1, Size: 5}},
|
|
r: Range{Pos: 6, Size: 10},
|
|
want: Ranges(nil),
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 1, Size: 2},
|
|
{Pos: 11, Size: 2},
|
|
{Pos: 21, Size: 2},
|
|
{Pos: 31, Size: 2},
|
|
{Pos: 41, Size: 2},
|
|
},
|
|
r: Range{Pos: 12, Size: 20},
|
|
want: Ranges{
|
|
{Pos: 12, Size: 1},
|
|
{Pos: 21, Size: 2},
|
|
{Pos: 31, Size: 1},
|
|
},
|
|
},
|
|
} {
|
|
got := test.rs.Intersection(test.r)
|
|
what := fmt.Sprintf("test ra=%v, r=%v", test.rs, test.r)
|
|
assert.Equal(t, test.want, got, what)
|
|
checkRanges(t, test.rs, what)
|
|
checkRanges(t, got, what)
|
|
}
|
|
}
|
|
|
|
func TestRangesEqual(t *testing.T) {
|
|
for _, test := range []struct {
|
|
rs Ranges
|
|
bs Ranges
|
|
want bool
|
|
}{
|
|
{
|
|
rs: Ranges(nil),
|
|
bs: Ranges(nil),
|
|
want: true,
|
|
},
|
|
{
|
|
rs: Ranges{},
|
|
bs: Ranges(nil),
|
|
want: true,
|
|
},
|
|
{
|
|
rs: Ranges(nil),
|
|
bs: Ranges{},
|
|
want: true,
|
|
},
|
|
{
|
|
rs: Ranges{},
|
|
bs: Ranges{},
|
|
want: true,
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
},
|
|
bs: Ranges{},
|
|
want: false,
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
},
|
|
bs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
},
|
|
want: true,
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
{Pos: 10, Size: 9},
|
|
{Pos: 20, Size: 21},
|
|
},
|
|
bs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
{Pos: 10, Size: 9},
|
|
{Pos: 20, Size: 22},
|
|
},
|
|
want: false,
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
{Pos: 10, Size: 9},
|
|
{Pos: 20, Size: 21},
|
|
},
|
|
bs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
{Pos: 10, Size: 9},
|
|
{Pos: 20, Size: 21},
|
|
},
|
|
want: true,
|
|
},
|
|
} {
|
|
got := test.rs.Equal(test.bs)
|
|
what := fmt.Sprintf("test rs=%v, bs=%v", test.rs, test.bs)
|
|
assert.Equal(t, test.want, got, what)
|
|
checkRanges(t, test.bs, what)
|
|
checkRanges(t, test.rs, what)
|
|
}
|
|
}
|
|
|
|
func TestRangesSize(t *testing.T) {
|
|
for _, test := range []struct {
|
|
rs Ranges
|
|
want int64
|
|
}{
|
|
{
|
|
rs: Ranges(nil),
|
|
want: 0,
|
|
},
|
|
{
|
|
rs: Ranges{},
|
|
want: 0,
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 7, Size: 11},
|
|
},
|
|
want: 11,
|
|
},
|
|
{
|
|
rs: Ranges{
|
|
{Pos: 0, Size: 1},
|
|
{Pos: 10, Size: 9},
|
|
{Pos: 20, Size: 21},
|
|
},
|
|
want: 31,
|
|
},
|
|
} {
|
|
got := test.rs.Size()
|
|
what := fmt.Sprintf("test rs=%v", test.rs)
|
|
assert.Equal(t, test.want, got, what)
|
|
checkRanges(t, test.rs, what)
|
|
}
|
|
}
|
|
|
|
func TestFindMissing(t *testing.T) {
|
|
for _, test := range []struct {
|
|
r Range
|
|
rs Ranges
|
|
want Range
|
|
}{
|
|
{
|
|
r: Range{},
|
|
rs: Ranges(nil),
|
|
want: Range{},
|
|
},
|
|
{
|
|
r: Range{},
|
|
rs: Ranges{},
|
|
want: Range{},
|
|
},
|
|
{
|
|
r: Range{Pos: 3, Size: 5},
|
|
rs: Ranges{
|
|
{Pos: 10, Size: 5},
|
|
{Pos: 20, Size: 5},
|
|
},
|
|
want: Range{Pos: 3, Size: 5},
|
|
},
|
|
{
|
|
r: Range{Pos: 3, Size: 15},
|
|
rs: Ranges{
|
|
{Pos: 10, Size: 5},
|
|
{Pos: 20, Size: 5},
|
|
},
|
|
want: Range{Pos: 3, Size: 15},
|
|
},
|
|
{
|
|
r: Range{Pos: 10, Size: 5},
|
|
rs: Ranges{
|
|
{Pos: 10, Size: 5},
|
|
{Pos: 20, Size: 5},
|
|
},
|
|
want: Range{Pos: 15, Size: 0},
|
|
},
|
|
{
|
|
r: Range{Pos: 10, Size: 7},
|
|
rs: Ranges{
|
|
{Pos: 10, Size: 5},
|
|
{Pos: 20, Size: 5},
|
|
},
|
|
want: Range{Pos: 15, Size: 2},
|
|
},
|
|
{
|
|
r: Range{Pos: 11, Size: 7},
|
|
rs: Ranges{
|
|
{Pos: 10, Size: 5},
|
|
{Pos: 20, Size: 5},
|
|
},
|
|
want: Range{Pos: 15, Size: 3},
|
|
},
|
|
} {
|
|
got := test.rs.FindMissing(test.r)
|
|
what := fmt.Sprintf("test r=%v, rs=%v", test.r, test.rs)
|
|
assert.Equal(t, test.want, got, what)
|
|
assert.Equal(t, test.r.End(), got.End())
|
|
checkRanges(t, test.rs, what)
|
|
}
|
|
}
|