1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// Copyright 2019 Google LLC. 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 ctpolicy
import (
"testing"
)
func TestWeightedRandomSampleDef(t *testing.T) {
tests := []struct {
name string
weights map[string]float32
wantItem string
wantErr bool
}{
{
name: "OneNegativeWeight",
weights: map[string]float32{"a": 0.5, "b": -0.5, "c": 3.0},
wantItem: "",
wantErr: true,
},
{
name: "AllZeroWeights",
weights: map[string]float32{"a": 0.0, "b": 0.0, "c": 0.0},
wantItem: "",
wantErr: true,
},
{
name: "OneNonZeroWeights",
weights: map[string]float32{"a": 0.0, "b": 4.0, "c": 0.0},
wantItem: "b",
wantErr: false,
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
gotItem, err := weightedRandomSample(tc.weights)
if gotErr := err != nil; gotErr != tc.wantErr {
t.Fatalf("weightedRandomSample(%v) = (_, error: %v), want err? %t", tc.weights, err, tc.wantErr)
}
if gotItem != tc.wantItem {
t.Errorf("weightedRandomSample(%v) = (%q, _) want %q", tc.weights, gotItem, tc.wantItem)
}
})
}
}
func TestWeightedRandomSampleInDef(t *testing.T) {
tests := []struct {
name string
weights map[string]float32
wantOneOf []string
wantErr bool
}{
{
name: "TwoWeights",
weights: map[string]float32{"a": 0.5, "b": 0.0, "c": 3.0},
wantOneOf: []string{"a", "c"},
wantErr: false,
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
gotItem, err := weightedRandomSample(tc.weights)
if gotErr := err != nil; gotErr != tc.wantErr {
t.Fatalf("weightedRandomSample(%v) = (_, error: %v), want err? %t", tc.weights, err, tc.wantErr)
}
for _, i := range tc.wantOneOf {
if i == gotItem {
return
}
}
t.Errorf("weightedRandomSample(%v) = (%q, _) want any item of %v", tc.weights, gotItem, tc.wantOneOf)
})
}
}
|
