go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/cv/internal/common/i64_test.go (about)

     1  // Copyright 2021 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package common
    16  
    17  import (
    18  	"testing"
    19  
    20  	. "github.com/smartystreets/goconvey/convey"
    21  )
    22  
    23  func TestI64s(t *testing.T) {
    24  	t.Parallel()
    25  
    26  	Convey("UniqueSorted", t, func() {
    27  		v := []int64{7, 6, 3, 1, 3, 4, 9, 2, 1, 5, 8, 8, 8, 4, 9}
    28  		v1 := UniqueSorted(v)
    29  		So(v1, ShouldResemble, []int64{1, 2, 3, 4, 5, 6, 7, 8, 9})
    30  		So(v[:len(v1)], ShouldResemble, v1) // re-uses space
    31  
    32  		v = []int64{1, 2, 2, 3, 4, 5, 5}
    33  		v1 = UniqueSorted(v)
    34  		So(v1, ShouldResemble, []int64{1, 2, 3, 4, 5})
    35  		So(v[:len(v1)], ShouldResemble, v1) // re-uses space
    36  	})
    37  
    38  	Convey("DifferenceSorted", t, func() {
    39  		all := []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}
    40  		odd := []int64{1, 3, 5, 7, 9, 11}
    41  		div3 := []int64{3, 6, 9}
    42  
    43  		So(DifferenceSorted(odd, all), ShouldBeEmpty)
    44  		So(DifferenceSorted(div3, all), ShouldBeEmpty)
    45  
    46  		So(DifferenceSorted(all, odd), ShouldResemble, []int64{2, 4, 6, 8, 10})
    47  		So(DifferenceSorted(all, div3), ShouldResemble, []int64{1, 2, 4, 5, 7, 8, 10, 11})
    48  
    49  		So(DifferenceSorted(odd, div3), ShouldResemble, []int64{1, 5, 7, 11})
    50  		So(DifferenceSorted(div3, odd), ShouldResemble, []int64{6})
    51  	})
    52  
    53  	Convey("UnionSorted", t, func() {
    54  		all := []int64{1, 2, 3, 4, 5, 6, 7, 8, 9}
    55  		odd := []int64{1, 3, 5, 7, 9}
    56  		div3 := []int64{3, 6, 9}
    57  
    58  		So(UnionSorted(odd, all), ShouldResemble, all)
    59  		So(UnionSorted(all, div3), ShouldResemble, all)
    60  		So(UnionSorted(all, all), ShouldResemble, all)
    61  		So(UnionSorted(all, nil), ShouldResemble, all)
    62  		So(UnionSorted(nil, all), ShouldResemble, all)
    63  
    64  		So(UnionSorted(odd, div3), ShouldResemble, []int64{1, 3, 5, 6, 7, 9})
    65  		So(UnionSorted(div3, odd), ShouldResemble, []int64{1, 3, 5, 6, 7, 9})
    66  	})
    67  }