sigs.k8s.io/kueue@v0.6.2/pkg/util/slices/slices_test.go (about)

     1  /*
     2  Copyright 2023 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package slices
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/google/go-cmp/cmp"
    23  )
    24  
    25  func TestToRefMap(t *testing.T) {
    26  	data := [3]int{0xa, 0xb, 0xc}
    27  	cases := map[string]struct {
    28  		slice   []int
    29  		wantMap map[int]*int
    30  	}{
    31  		"preserve nil": {
    32  			slice:   nil,
    33  			wantMap: nil,
    34  		},
    35  		"preserve empty": {
    36  			slice:   []int{},
    37  			wantMap: map[int]*int{},
    38  		},
    39  		"slice": {
    40  			slice: data[:],
    41  			wantMap: map[int]*int{
    42  				0xd: &data[0],
    43  				0xe: &data[1],
    44  				0xf: &data[2],
    45  			},
    46  		},
    47  	}
    48  	for name, tc := range cases {
    49  		t.Run(name, func(t *testing.T) {
    50  			result := ToRefMap(tc.slice, func(p *int) int { return *p + 3 })
    51  			if diff := cmp.Diff(tc.wantMap, result); diff != "" {
    52  				t.Errorf("Unexpected result (-want,+got):\n%s", diff)
    53  			}
    54  		})
    55  	}
    56  }
    57  
    58  func TestToCmpNoOrder(t *testing.T) {
    59  	cases := map[string]struct {
    60  		sliceA []int
    61  		sliceB []int
    62  		want   bool
    63  	}{
    64  		"equal sets": {
    65  			sliceA: []int{1, 2, 3},
    66  			sliceB: []int{3, 2, 1},
    67  			want:   true,
    68  		},
    69  		"equal multisets": {
    70  			sliceA: []int{1, 1, 2},
    71  			sliceB: []int{1, 2, 1},
    72  			want:   true,
    73  		},
    74  		"unequal multisets": {
    75  			sliceA: []int{1, 2, 2},
    76  			sliceB: []int{1, 2, 1},
    77  			want:   false,
    78  		},
    79  		"unequal sets": {
    80  			sliceA: []int{1, 2},
    81  			sliceB: []int{1, 1},
    82  			want:   false,
    83  		},
    84  		"slice A is longer": {
    85  			sliceA: []int{1, 2, 3},
    86  			sliceB: []int{1, 2},
    87  			want:   false,
    88  		},
    89  		"slice B is longer": {
    90  			sliceA: []int{1, 2},
    91  			sliceB: []int{1, 2, 3},
    92  			want:   false,
    93  		},
    94  	}
    95  
    96  	for name, tc := range cases {
    97  		t.Run(name, func(t *testing.T) {
    98  			res := CmpNoOrder[int](tc.sliceA, tc.sliceB)
    99  			if res != tc.want {
   100  				t.Errorf("Unexpected result: want: %v, got: %v", tc.want, res)
   101  			}
   102  		})
   103  	}
   104  }
   105  
   106  func TestPick(t *testing.T) {
   107  	cases := map[string]struct {
   108  		testSlice []int
   109  		want      []int
   110  	}{
   111  		"nil input": {
   112  			testSlice: nil,
   113  			want:      nil,
   114  		},
   115  		"empty input": {
   116  			testSlice: []int{},
   117  			want:      nil,
   118  		},
   119  		"no match": {
   120  			testSlice: []int{1, 3, 5, 7, 9},
   121  			want:      nil,
   122  		},
   123  		"match": {
   124  			testSlice: []int{1, 2, 3, 4, 5, 6, 7, 8, 9},
   125  			want:      []int{2, 4, 6, 8},
   126  		},
   127  	}
   128  
   129  	for name, tc := range cases {
   130  		t.Run(name, func(t *testing.T) {
   131  			result := Pick(tc.testSlice, func(i *int) bool { return (*i)%2 == 0 })
   132  			if diff := cmp.Diff(tc.want, result); diff != "" {
   133  				t.Errorf("Unexpected result (-want,+got):\n%s", diff)
   134  			}
   135  		})
   136  	}
   137  }