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// Copyright
2020 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version
2.
0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//
http://www.apache.org/licenses/LICENSE-2.
0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package depset
import (
"bytes"
"fmt"
"reflect"
"slices"
"strings"
"testing"
"github.com/google/blueprint/gobtools"
)
func ExampleDepSet_ToList_postordered() {
a := NewBuilder[string](POSTORDER).Direct("a").Build()
b := NewBuilder[string](POSTORDER).Direct("b").Transitive(a).Build()
c := NewBuilder[string](POSTORDER).Direct("c").Transitive(a).Build()
d := NewBuilder[string](POSTORDER).Direct("d").Transitive(b, c).Build()
fmt.Println(d.ToList())
// Output: [a b c d]
}
func ExampleDepSet_ToList_preordered() {
a := NewBuilder[string](PREORDER).Direct("a").Build()
b := NewBuilder[string](PREORDER).Direct("b").Transitive(a).Build()
c := NewBuilder[string](PREORDER).Direct("c").Transitive(a).Build()
d := NewBuilder[string](PREORDER).Direct("d").Transitive(b, c).Build()
fmt.Println(d.ToList())
// Output: [d b a c]
}
func ExampleDepSet_ToList_topological() {
a := NewBuilder[string](TOPOLOGICAL).Direct("a").Build()
b := NewBuilder[string](TOPOLOGICAL).Direct("b").Transitive(a).Build()
c := NewBuilder[string](TOPOLOGICAL).Direct("c").Transitive(a).Build()
d := NewBuilder[string](TOPOLOGICAL).Direct("d").Transitive(b, c).Build()
fmt.Println(d.ToList())
// Output: [d b c a]
}
// Tests based on Bazel's ExpanderTestBase.java to ensure compatibility
//
https://github.com/bazelbuild/bazel/blob/master/src/test/java/com/google/devtools/build/lib/collect/nestedset/ExpanderTestBase.java
func TestDepSet(t *testing.T) {
tests := []struct {
name string
depSet func(t *testing.T, order Order) DepSet[string]
postorder, preorder, topological []string
}{
{
name: "simple",
depSet: func(t *testing.T, order Order) DepSet[string] {
return New[string](order, []string{"c", "a", "b"}, nil)
},
postorder: []string{"c", "a", "b"},
preorder: []string{"c", "a", "b"},
topological: []string{"c", "a", "b"},
},
{
name: "simpleNoDuplicates",
depSet: func(t *testing.T, order Order) DepSet[string] {
return New[string](order, []string{"c", "a", "a", "a", "b"}, nil)
},
postorder: []string{"c", "a", "b"},
preorder: []string{"c", "a", "b"},
topological: []string{"c", "a", "b"},
},
{
name: "nesting",
depSet: func(t *testing.T, order Order) DepSet[string] {
subset := New[string](order, []string{"c", "a", "e"}, nil)
return New[string](order, []string{"b", "d"}, []DepSet[string]{subset})
},
postorder: []string{"c", "a", "e", "b", "d"},
preorder: []string{"b", "d", "c", "a", "e"},
topological: []string{"b", "d", "c", "a", "e"},
},
{
name: "builderReuse",
depSet: func(t *testing.T, order Order) DepSet[string] {
assertEquals := func(t *testing.T, w, g []string) {
t.Helper()
if !reflect.DeepEqual(w, g) {
t.Errorf("want %q, got %q", w, g)
}
}
builder := NewBuilder[string](order)
assertEquals(t, nil, builder.Build().ToList())
builder.Direct("b")
assertEquals(t, []string{"b"}, builder.Build().ToList())
builder.Direct("d")
assertEquals(t, []string{"b", "d"}, builder.Build().ToList())
child := NewBuilder[string](order).Direct("c", "a", "e").Build()
builder.Transitive(child)
return builder.Build()
},
postorder: []string{"c", "a", "e", "b", "d"},
preorder: []string{"b", "d", "c", "a", "e"},
topological: []string{"b", "d", "c", "a", "e"},
},
{
name: "builderChaining",
depSet: func(t *testing.T, order Order) DepSet[string] {
return NewBuilder[string](order).Direct("b").Direct("d").
Transitive(NewBuilder[string](order).Direct("c", "a", "e").Build()).Build()
},
postorder: []string{"c", "a", "e", "b", "d"},
preorder: []string{"b", "d", "c", "a", "e"},
topological: []string{"b", "d", "c", "a", "e"},
},
{
name: "transitiveDepsHandledSeparately",
depSet: func(t *testing.T, order Order) DepSet[string] {
subset := NewBuilder[string](order).Direct("c", "a", "e").Build()
builder := NewBuilder[string](order)
// The fact that we add the transitive subset between the Direct(b) and Direct(d)
// calls should not change the result.
builder.Direct("b")
builder.Transitive(subset)
builder.Direct("d")
return builder.Build()
},
postorder: []string{"c", "a", "e", "b", "d"},
preorder: []string{"b", "d", "c", "a", "e"},
topological: []string{"b", "d", "c", "a", "e"},
},
{
name: "nestingNoDuplicates",
depSet: func(t *testing.T, order Order) DepSet[string] {
subset := NewBuilder[string](order).Direct("c", "a", "e").Build()
return NewBuilder[string](order).Direct("b", "d", "e").Transitive(subset).Build()
},
postorder: []string{"c", "a", "e", "b", "d"},
preorder: []string{"b", "d", "e", "c", "a"},
topological: []string{"b", "d", "c", "a", "e"},
},
{
name: "chain",
depSet: func(t *testing.T, order Order) DepSet[string] {
c := NewBuilder[string](order).Direct("c").Build()
b := NewBuilder[string](order).Direct("b").Transitive(c).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Build()
return a
},
postorder: []string{"c", "b", "a"},
preorder: []string{"a", "b", "c"},
topological: []string{"a", "b", "c"},
},
{
name: "diamond",
depSet: func(t *testing.T, order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
c := NewBuilder[string](order).Direct("c").Transitive(d).Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
postorder: []string{"d", "b", "c", "a"},
preorder: []string{"a", "b", "d", "c"},
topological: []string{"a", "b", "c", "d"},
},
{
name: "extendedDiamond",
depSet: func(t *testing.T, order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
e := NewBuilder[string](order).Direct("e").Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Transitive(e).Build()
c := NewBuilder[string](order).Direct("c").Transitive(e).Transitive(d).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
postorder: []string{"d", "e", "b", "c", "a"},
preorder: []string{"a", "b", "d", "e", "c"},
topological: []string{"a", "b", "c", "e", "d"},
},
{
name: "extendedDiamondRightArm",
depSet: func(t *testing.T, order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
e := NewBuilder[string](order).Direct("e").Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Transitive(e).Build()
c2 := NewBuilder[string](order).Direct("c2").Transitive(e).Transitive(d).Build()
c := NewBuilder[string](order).Direct("c").Transitive(c2).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
postorder: []string{"d", "e", "b", "c2", "c", "a"},
preorder: []string{"a", "b", "d", "e", "c", "c2"},
topological: []string{"a", "b", "c", "c2", "e", "d"},
},
{
name: "orderConflict",
depSet: func(t *testing.T, order Order) DepSet[string] {
child1 := NewBuilder[string](order).Direct("a", "b").Build()
child2 := NewBuilder[string](order).Direct("b", "a").Build()
parent := NewBuilder[string](order).Transitive(child1).Transitive(child2).Build()
return parent
},
postorder: []string{"a", "b"},
preorder: []string{"a", "b"},
topological: []string{"b", "a"},
},
{
name: "orderConflictNested",
depSet: func(t *testing.T, order Order) DepSet[string] {
a := NewBuilder[string](order).Direct("a").Build()
b := NewBuilder[string](order).Direct("b").Build()
child1 := NewBuilder[string](order).Transitive(a).Transitive(b).Build()
child2 := NewBuilder[string](order).Transitive(b).Transitive(a).Build()
parent := NewBuilder[string](order).Transitive(child1).Transitive(child2).Build()
return parent
},
postorder: []string{"a", "b"},
preorder: []string{"a", "b"},
topological: []string{"b", "a"},
},
{
name: "zeroDepSet",
depSet: func(t *testing.T, order Order) DepSet[string] {
a := NewBuilder[string](order).Build()
var b DepSet[string]
c := NewBuilder[string](order).Direct("c").Transitive(a, b).Build()
return c
},
postorder: []string{"c"},
preorder: []string{"c"},
topological: []string{"c"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Run("postorder", func(t *testing.T) {
depSet := tt.depSet(t, POSTORDER)
if g, w := depSet.ToList(), tt.postorder; !slices.Equal(g, w) {
t.Errorf("expected ToList() = %q, got %q", w, g)
}
})
t.Run("preorder", func(t *testing.T) {
depSet := tt.depSet(t, PREORDER)
if g, w := depSet.ToList(), tt.preorder; !slices.Equal(g, w) {
t.Errorf("expected ToList() = %q, got %q", w, g)
}
})
t.Run("topological", func(t *testing.T) {
depSet := tt.depSet(t, TOPOLOGICAL)
if g, w := depSet.ToList(), tt.topological; !slices.Equal(g, w) {
t.Errorf("expected ToList() = %q, got %q", w, g)
}
})
})
}
}
func TestDepSetGob(t *testing.T) {
tests := []struct {
name string
depSet func(t *testing.T, order Order) DepSet[string]
}{
{
name: "direct",
depSet: func(t *testing.T, order Order) DepSet[string] {
return New[string](order, []string{"c", "a", "b"}, nil)
},
},
{
name: "simple",
depSet: func(t *testing.T, order Order) DepSet[string] {
subset := New[string](order, []string{"c", "a", "e"}, nil)
return New[string](order, []string{"b", "d"}, []DepSet[string]{subset})
},
},
{
name: "simpleWithDuplicates",
depSet: func(t *testing.T, order Order) DepSet[string] {
subset := New[string](order, []string{"c", "a", "e"}, nil)
return New[string](order, []string{"c", "a", "a", "a", "b"}, []DepSet[string]{subset, su
bset})
},
},
{
name: "chain",
depSet: func(t *testing.T, order Order) DepSet[string] {
c := NewBuilder[string](order).Direct("c").Build()
b := NewBuilder[string](order).Direct("b").Transitive(c).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Build()
return a
},
},
{
name: "diamond",
depSet: func(t *testing.T, order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
c := NewBuilder[string](order).Direct("c").Transitive(d).Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
},
{
name: "extendedDiamond",
depSet: func(t *testing.T, order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
e := NewBuilder[string](order).Direct("e").Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Transitive(e).Build()
c := NewBuilder[string](order).Direct("c").Transitive(e).Transitive(d).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
},
{
name: "extendedDiamondRightArm",
depSet: func(t *testing.T, order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
e := NewBuilder[string](order).Direct("e").Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Transitive(e).Build()
c2 := NewBuilder[string](order).Direct("c2").Transitive(e).Transitive(d).Build()
c := NewBuilder[string](order).Direct("c").Transitive(c2).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
},
{
name: "zeroDepSet",
depSet: func(t *testing.T, order Order) DepSet[string] {
a := NewBuilder[string](order).Build()
var b DepSet[string]
c := NewBuilder[string](order).Direct("c").Transitive(a, b).Build()
return c
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
toGob := tt.depSet(t, POSTORDER)
buf := new(bytes.Buffer)
ctx := gobtools.NewReferencesEncoderForTest()
err := toGob.EncodeString(ctx, buf)
if err != nil {
t.Errorf("failed to serialize depset: %s", err)
}
if err = ctx.EncodeReferences(); err != nil {
t.Errorf("failed to encode references: %v", err)
}
var fromGob DepSet[string]
err = fromGob.DecodeString(ctx, bytes.NewReader(buf.Bytes()))
if err != nil {
t.Errorf("failed to deserialize depset: %s", err)
}
if toGob != fromGob {
t.Errorf("depsets are different: %v %v", toGob.ToList(), fromGob.ToList())
}
})
}
}
type testInterface interface {
getName() string
}
func init() {
testStructGobRegId = gobtools.RegisterType(func() gobtools.CustomDec { return new(testStruct) })
}
var testStructGobRegId int16
func (r testStruct) GetTypeId() int16 {
return testStructGobRegId
}
type testStruct struct {
name string
}
func (r testStruct) getName() string {
return r.name
}
func (r testStruct) Encode(ctx gobtools.EncContext, buf *bytes.Buffer) error {
var err error
if err = gobtools.EncodeString(buf, r.name); err != nil {
return err
}
return err
}
func (r *testStruct) Decode(ctx gobtools.EncContext, buf *bytes.Reader) error {
var err error
err = gobtools.DecodeString(buf, &r.name)
if err != nil {
return err
}
return err
}
func TestEncDecReferencesDepsetStruct(t *testing.T) {
defTestStruct := testStruct{name: "string value for test"}
transTestStruct := New(PREORDER, []testStruct{defTestStruct}, nil)
depsetTesStruct := New(PREORDER, []testStruct{defTestStruct}, []DepSet[testStruct]{transTestStruct})
testCases := []struct {
name string
encoded DepSet[testStruct]
decoded1 DepSet[testStruct]
decoded2 DepSet[testStruct]
}{
{
name: "depset reference",
encoded: depsetTesStruct,
decoded1: DepSet[testStruct]{},
decoded2: DepSet[testStruct]{},
},
}
for _, tc := range testCases {
var err error
buf := new(bytes.Buffer)
ctx := gobtools.NewReferencesEncoderForTest()
if err = tc.encoded.Encode(ctx, buf); err != nil {
t.Errorf("failed to encode reference: %v", err)
}
if err = tc.encoded.Encode(ctx, buf); err != nil {
t.Errorf("failed to encode reference: %v", err)
}
if err = ctx.EncodeReferences(); err != nil {
t.Errorf("failed to encode references: %v", err)
}
reader := bytes.NewReader(buf.Bytes())
if tc.decoded1.Decode(ctx, reader); err != nil {
t.Errorf("failed to decode references: %v", err)
}
if tc.decoded2.Decode(ctx, reader); err != nil {
t.Errorf("failed to decode references: %v", err)
}
if !reflect.DeepEqual(tc.encoded, tc.decoded1) {
t.Errorf("the decoded data is different from the origin: expected:\n %#v\n got:\n %#v", tc.encoded, tc.decoded1)
}
if !reflect.DeepEqual(tc.encoded, tc.decoded2) {
t.Errorf("the decoded data is different from the origin: expected:\n %#v\n got:\n %#v", tc.encoded, tc.decoded2)
}
if tc.decoded1 != tc.decoded2 {
t.Errorf("should decode to the same reference: \n %#v\n %#v", tc.decoded1, tc.decoded2)
}
}
}
func TestEncDecReferencesDepsetString(t *testing.T) {
defTestString := "string value for test"
transTestString := New(PREORDER, []string{defTestString}, nil)
depsetTesString := New(PREORDER, []string{defTestString}, []DepSet[string]{transTestString})
testCases := []struct {
name string
encoded DepSet[string]
decoded1 DepSet[string]
decoded2 DepSet[string]
}{
{
name: "depset reference",
encoded: depsetTesString,
decoded1: DepSet[string]{},
decoded2: DepSet[string]{},
},
}
for _, tc := range testCases {
var err error
buf := new(bytes.Buffer)
ctx := gobtools.NewReferencesEncoderForTest()
if err = tc.encoded.EncodeString(ctx, buf); err != nil {
t.Errorf("failed to encode reference: %v", err)
}
if err = tc.encoded.EncodeString(ctx, buf); err != nil {
t.Errorf("failed to encode reference: %v", err)
}
if err = ctx.EncodeReferences(); err != nil {
t.Errorf("failed to encode references: %v", err)
}
reader := bytes.NewReader(buf.Bytes())
if tc.decoded1.DecodeString(ctx, reader); err != nil {
t.Errorf("failed to decode references: %v", err)
}
if tc.decoded2.DecodeString(ctx, reader); err != nil {
t.Errorf("failed to decode references: %v", err)
}
if !reflect.DeepEqual(tc.encoded, tc.decoded1) {
t.Errorf("the decoded data is different from the origin: expected:\n %#v\n got:\n %#v", tc.encoded, tc.decoded1)
}
if !reflect.DeepEqual(tc.encoded, tc.decoded2) {
t.Errorf("the decoded data is different from the origin: expected:\n %#v\n got:\n %#v", tc.encoded, tc.decoded2)
}
if tc.decoded1 != tc.decoded2 {
t.Errorf("should decode to the same reference: \n %#v\n %#v", tc.decoded1, tc.decoded2)
}
}
}
func TestEncDecReferencesDepsetInterface(t *testing.T) {
defTestStruct := testStruct{name: "string value for test"}
transTestStructInterface := New(POSTORDER, []testInterface{defTestStruct}, nil)
depsetTesStructInterface := New(POSTORDER, []testInterface{defTestStruct}, []DepSet[testInterface]{transTestStructInterface})
testCases := []struct {
name string
encoded DepSet[testInterface]
decoded1 DepSet[testInterface]
decoded2 DepSet[testInterface]
}{
{
name: "depset reference",
encoded: depsetTesStructInterface,
decoded1: DepSet[testInterface]{},
decoded2: DepSet[testInterface]{},
},
}
for _, tc := range testCases {
var err error
buf := new(bytes.Buffer)
ctx := gobtools.NewReferencesEncoderForTest()
if err = tc.encoded.EncodeInterface(ctx, buf); err != nil {
t.Errorf("failed to encode reference: %v", err)
}
if err = tc.encoded.EncodeInterface(ctx, buf); err != nil {
t.Errorf("failed to encode reference: %v", err)
}
if err = ctx.EncodeReferences(); err != nil {
t.Errorf("failed to encode references: %v", err)
}
reader := bytes.NewReader(buf.Bytes())
if tc.decoded1.DecodeInterface(ctx, reader); err != nil {
t.Errorf("failed to decode references: %v", err)
}
if tc.decoded2.DecodeInterface(ctx, reader); err != nil {
t.Errorf("failed to decode references: %v", err)
}
if !reflect.DeepEqual(tc.encoded, tc.decoded1) {
t.Errorf("the decoded data is different from the origin: expected:\n %#v\n got:\n %#v", tc.encoded, tc.decoded1)
}
if !reflect.DeepEqual(tc.encoded, tc.decoded2) {
t.Errorf("the decoded data is different from the origin: expected:\n %#v\n got:\n %#v", tc.encoded, tc.decoded2)
}
if tc.decoded1 != tc.decoded2 {
t.Errorf("should decode to the same reference: \n %#v\n %#v", tc.decoded1, tc.decoded2)
}
}
}
func TestDepSetInvalidOrder(t *testing.T) {
orders := []Order{POSTORDER, PREORDER, TOPOLOGICAL}
run := func(t *testing.T, order1, order2 Order) {
defer func() {
if r := recover(); r != nil {
if err, ok := r.(error); !ok {
t.Fatalf("expected panic error, got %v", err)
} else if !strings.Contains(err.Error(), "incompatible order") {
t.Fatalf("expected incompatible order error, got %v", err)
}
}
}()
New(order1, nil, []DepSet[string]{New[string](order2, []string{"a"}, nil)})
t.Fatal("expected panic")
}
for _, order1 := range orders {
t.Run(order1.String(), func(t *testing.T) {
for _, order2 := range orders {
t.Run(order2.String(), func(t *testing.T) {
if order1 != order2 {
run(t, order1, order2)
}
})
}
})
}
}
func TestDepSetSetMinus(t *testing.T) {
testCases := []struct {
name string
d func(order Order) DepSet[string]
other func(order Order) DepSet[string]
postorder, preorder, topological []string
}{
{
name: "simple",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b", "c").Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("b").Build()
},
postorder: []string{"a", "c"},
preorder: []string{"a", "c"},
topological: []string{"a", "c"},
},
{
name: "no overlap",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b").Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("c", "d").Build()
},
postorder: []string{"a", "b"},
preorder: []string{"a", "b"},
topological: []string{"a", "b"},
},
{
name: "subtract superset",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b").Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b", "c").Build()
},
postorder: nil,
preorder: nil,
topological: nil,
},
{
name: "subtract subset",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b", "c").Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b").Build()
},
postorder: []string{"c"},
preorder: []string{"c"},
topological: []string{"c"},
},
{
name: "subtract from empty",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b").Build()
},
postorder: nil,
preorder: nil,
topological: nil,
},
{
name: "subtract empty",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b").Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Build()
},
postorder: []string{"a", "b"},
preorder: []string{"a", "b"},
topological: []string{"a", "b"},
},
{
name: "subtract self",
d: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b", "c").Build()
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("a", "b", "c").Build()
},
postorder: nil,
preorder: nil,
topological: nil,
},
{
name: "diamond",
d: func(order Order) DepSet[string] {
d := NewBuilder[string](order).Direct("d").Build()
c := NewBuilder[string](order).Direct("c").Transitive(d).Build()
b := NewBuilder[string](order).Direct("b").Transitive(d).Build()
a := NewBuilder[string](order).Direct("a").Transitive(b).Transitive(c).Build()
return a
},
other: func(order Order) DepSet[string] {
return NewBuilder[string](order).Direct("c", "d").Build()
},
postorder: []string{"b", "a"},
preorder: []string{"a", "b"},
topological: []string{"a", "b"},
},
}
for _, tt := range testCases {
t.Run(tt.name, func(t *testing.T) {
t.Run("postorder", func(t *testing.T) {
d := tt.d(POSTORDER)
other := tt.other(POSTORDER)
g := d.SetMinus(other).ToList()
if !slices.Equal(g, tt.postorder) {
t.Errorf("got %q, want %q", g, tt.postorder)
}
})
t.Run("preorder", func(t *testing.T) {
d := tt.d(PREORDER)
other := tt.other(PREORDER)
g := d.SetMinus(other).ToList()
if !slices.Equal(g, tt.preorder) {
t.Errorf("got %q, want %q", g, tt.preorder)
}
})
t.Run("topological", func(t *testing.T) {
d := tt.d(TOPOLOGICAL)
other := tt.other(TOPOLOGICAL)
g := d.SetMinus(other).ToList()
if !slices.Equal(g, tt.topological) {
t.Errorf("got %q, want %q", g, tt.topological)
}
})
})
}
}