1// Copyright The OpenTelemetry 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
15package label_test
16
17import (
18	"reflect"
19	"testing"
20	"unsafe"
21
22	"github.com/google/go-cmp/cmp"
23
24	"go.opentelemetry.io/otel/label"
25)
26
27func TestValue(t *testing.T) {
28	k := label.Key("test")
29	bli := getBitlessInfo(42)
30	for _, testcase := range []struct {
31		name      string
32		value     label.Value
33		wantType  label.Type
34		wantValue interface{}
35	}{
36		{
37			name:      "Key.Bool() correctly returns keys's internal bool value",
38			value:     k.Bool(true).Value,
39			wantType:  label.BOOL,
40			wantValue: true,
41		},
42		{
43			name:      "Key.Array([]bool) correctly return key's internal bool values",
44			value:     k.Array([]bool{true, false}).Value,
45			wantType:  label.ARRAY,
46			wantValue: [2]bool{true, false},
47		},
48		{
49			name:      "Key.Int64() correctly returns keys's internal int64 value",
50			value:     k.Int64(42).Value,
51			wantType:  label.INT64,
52			wantValue: int64(42),
53		},
54		{
55			name:      "Key.Uint64() correctly returns keys's internal uint64 value",
56			value:     k.Uint64(42).Value,
57			wantType:  label.UINT64,
58			wantValue: uint64(42),
59		},
60		{
61			name:      "Key.Float64() correctly returns keys's internal float64 value",
62			value:     k.Float64(42.1).Value,
63			wantType:  label.FLOAT64,
64			wantValue: 42.1,
65		},
66		{
67			name:      "Key.Int32() correctly returns keys's internal int32 value",
68			value:     k.Int32(42).Value,
69			wantType:  label.INT32,
70			wantValue: int32(42),
71		},
72		{
73			name:      "Key.Uint32() correctly returns keys's internal uint32 value",
74			value:     k.Uint32(42).Value,
75			wantType:  label.UINT32,
76			wantValue: uint32(42),
77		},
78		{
79			name:      "Key.Float32() correctly returns keys's internal float32 value",
80			value:     k.Float32(42.1).Value,
81			wantType:  label.FLOAT32,
82			wantValue: float32(42.1),
83		},
84		{
85			name:      "Key.String() correctly returns keys's internal string value",
86			value:     k.String("foo").Value,
87			wantType:  label.STRING,
88			wantValue: "foo",
89		},
90		{
91			name:      "Key.Int() correctly returns keys's internal signed integral value",
92			value:     k.Int(bli.intValue).Value,
93			wantType:  bli.signedType,
94			wantValue: bli.signedValue,
95		},
96		{
97			name:      "Key.Uint() correctly returns keys's internal unsigned integral value",
98			value:     k.Uint(bli.uintValue).Value,
99			wantType:  bli.unsignedType,
100			wantValue: bli.unsignedValue,
101		},
102		{
103			name:      "Key.Array([]int64) correctly returns keys's internal int64 values",
104			value:     k.Array([]int64{42, 43}).Value,
105			wantType:  label.ARRAY,
106			wantValue: [2]int64{42, 43},
107		},
108		{
109			name:      "KeyArray([]uint64) correctly returns keys's internal uint64 values",
110			value:     k.Array([]uint64{42, 43}).Value,
111			wantType:  label.ARRAY,
112			wantValue: [2]uint64{42, 43},
113		},
114		{
115			name:      "Key.Array([]float64) correctly returns keys's internal float64 values",
116			value:     k.Array([]float64{42, 43}).Value,
117			wantType:  label.ARRAY,
118			wantValue: [2]float64{42, 43},
119		},
120		{
121			name:      "Key.Array([]int32) correctly returns keys's internal int32 values",
122			value:     k.Array([]int32{42, 43}).Value,
123			wantType:  label.ARRAY,
124			wantValue: [2]int32{42, 43},
125		},
126		{
127			name:      "Key.Array([]uint32) correctly returns keys's internal uint32 values",
128			value:     k.Array([]uint32{42, 43}).Value,
129			wantType:  label.ARRAY,
130			wantValue: [2]uint32{42, 43},
131		},
132		{
133			name:      "Key.Array([]float32) correctly returns keys's internal float32 values",
134			value:     k.Array([]float32{42, 43}).Value,
135			wantType:  label.ARRAY,
136			wantValue: [2]float32{42, 43},
137		},
138		{
139			name:      "Key.Array([]string) correctly return key's internal string values",
140			value:     k.Array([]string{"foo", "bar"}).Value,
141			wantType:  label.ARRAY,
142			wantValue: [2]string{"foo", "bar"},
143		},
144		{
145			name:      "Key.Array([]int) correctly returns keys's internal signed integral values",
146			value:     k.Array([]int{42, 43}).Value,
147			wantType:  label.ARRAY,
148			wantValue: [2]int{42, 43},
149		},
150		{
151			name:      "Key.Array([]uint) correctly returns keys's internal unsigned integral values",
152			value:     k.Array([]uint{42, 43}).Value,
153			wantType:  label.ARRAY,
154			wantValue: [2]uint{42, 43},
155		},
156		{
157			name:      "Key.Array([][]int) refuses to create multi-dimensional array",
158			value:     k.Array([][]int{{1, 2}, {3, 4}}).Value,
159			wantType:  label.INVALID,
160			wantValue: nil,
161		},
162	} {
163		t.Logf("Running test case %s", testcase.name)
164		if testcase.value.Type() != testcase.wantType {
165			t.Errorf("wrong value type, got %#v, expected %#v", testcase.value.Type(), testcase.wantType)
166		}
167		if testcase.wantType == label.INVALID {
168			continue
169		}
170		got := testcase.value.AsInterface()
171		if diff := cmp.Diff(testcase.wantValue, got); diff != "" {
172			t.Errorf("+got, -want: %s", diff)
173		}
174	}
175}
176
177type bitlessInfo struct {
178	intValue      int
179	uintValue     uint
180	signedType    label.Type
181	unsignedType  label.Type
182	signedValue   interface{}
183	unsignedValue interface{}
184}
185
186func getBitlessInfo(i int) bitlessInfo {
187	if unsafe.Sizeof(i) == 4 {
188		return bitlessInfo{
189			intValue:      i,
190			uintValue:     uint(i),
191			signedType:    label.INT32,
192			unsignedType:  label.UINT32,
193			signedValue:   int32(i),
194			unsignedValue: uint32(i),
195		}
196	}
197	return bitlessInfo{
198		intValue:      i,
199		uintValue:     uint(i),
200		signedType:    label.INT64,
201		unsignedType:  label.UINT64,
202		signedValue:   int64(i),
203		unsignedValue: uint64(i),
204	}
205}
206
207func TestAsArrayValue(t *testing.T) {
208	v := label.ArrayValue([]uint{1, 2, 3}).AsArray()
209	// Ensure the returned dynamic type is stable.
210	if got, want := reflect.TypeOf(v).Kind(), reflect.Array; got != want {
211		t.Errorf("AsArray() returned %T, want %T", got, want)
212	}
213}
214