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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
// Copyright 2019 CUE Authors
//
// 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 cuego
import (
"reflect"
"testing"
)
type Sum struct {
A int `cue:"C-B" json:",omitempty"`
B int `cue:"C-A" json:",omitempty"`
C int `cue:"A+B & >=5" json:",omitempty"`
}
func checkErr(t *testing.T, got error, want string) {
t.Helper()
if (got == nil) != (want == "") {
t.Errorf("error: got %v; want %v", got, want)
}
}
func TestValidate(t *testing.T) {
fail := "some error"
testCases := []struct {
name string
value interface{}
constraints string
err string
}{{
name: "Sum",
value: Sum{A: 1, B: 4, C: 5},
}, {
name: "*Sum",
value: &Sum{A: 1, B: 4, C: 5},
}, {
name: "*Sum: incorrect sum",
value: &Sum{A: 1, B: 4, C: 6},
err: fail,
}, {
name: "*Sum: field C is too low",
value: &Sum{A: 1, B: 3, C: 4},
err: fail,
}, {
name: "*Sum: nil value",
value: (*Sum)(nil),
// }, {
// // TODO: figure out whether this constraint should constrain it
// // to a struct or not.
// name: "*Sum: nil disallowed by constraint",
// value: (*Sum)(nil),
// constraints: "!=null",
// err: fail,
}, {
// Not a typical constraint, but it is possible.
name: "string list",
value: []string{"a", "b", "c"},
constraints: `[_, "b", ...]`,
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
c := &Context{}
if tc.constraints != "" {
err := c.Constrain(tc.value, tc.constraints)
if err != nil {
t.Fatal(err)
}
}
err := c.Validate(tc.value)
checkErr(t, err, tc.err)
})
}
}
func TestUpdate(t *testing.T) {
type sump struct {
A *int `cue:"C-B"`
B *int `cue:"C-A"`
C *int `cue:"A+B"`
}
one := 1
two := 2
fail := "some error"
_ = fail
_ = one
testCases := []struct {
name string
value interface{}
result interface{}
constraints string
err string
}{{
name: "*Sum",
value: &Sum{A: 1, B: 4, C: 5},
result: &Sum{A: 1, B: 4, C: 5},
}, {
name: "*Sum",
value: &Sum{A: 1, B: 4},
result: &Sum{A: 1, B: 4, C: 5},
}, {
name: "*sump",
value: &sump{A: &one, B: &one},
result: &sump{A: &one, B: &one, C: &two},
}, {
name: "*Sum: backwards",
value: &Sum{B: 4, C: 8},
result: &Sum{A: 4, B: 4, C: 8},
}, {
name: "*Sum: sum too low",
value: &Sum{A: 1, B: 3},
result: &Sum{A: 1, B: 3}, // Value should not be updated
err: fail,
}, {
name: "*Sum: sum underspecified",
value: &Sum{A: 1},
result: &Sum{A: 1}, // Value should not be updated
err: fail,
}, {
name: "Sum: cannot modify",
value: Sum{A: 3, B: 4, C: 7},
result: Sum{A: 3, B: 4, C: 7},
err: fail,
}, {
name: "*Sum: cannot update nil value",
value: (*Sum)(nil),
result: (*Sum)(nil),
err: fail,
}, {
name: "cannot modify slice",
value: []string{"a", "b", "c"},
result: []string{"a", "b", "c"},
err: fail,
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
c := &Context{}
if tc.constraints != "" {
err := c.Constrain(tc.value, tc.constraints)
if err != nil {
t.Fatal(err)
}
}
err := c.Complete(tc.value)
checkErr(t, err, tc.err)
if !reflect.DeepEqual(tc.value, tc.result) {
t.Errorf("value:\n got: %#v;\nwant: %#v", tc.value, tc.result)
}
})
}
}
|
