opentelemetry-collector/client/client_test.go

98 lines
2.1 KiB
Go

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package client contains generic representations of clients connecting to
// different receivers
package client
import (
"context"
"net"
"testing"
"github.com/stretchr/testify/assert"
)
func TestNewContext(t *testing.T) {
testCases := []struct {
name string
cl Info
}{
{
name: "valid client",
cl: Info{
Addr: &net.IPAddr{
IP: net.IPv4(1, 2, 3, 4),
},
},
},
{
name: "nil client",
cl: Info{},
},
}
for _, tt := range testCases {
t.Run(tt.name, func(t *testing.T) {
ctx := NewContext(context.Background(), tt.cl)
assert.Equal(t, ctx.Value(ctxKey{}), tt.cl)
})
}
}
func TestFromContext(t *testing.T) {
testCases := []struct {
name string
input context.Context
expected Info
}{
{
name: "context with client",
input: context.WithValue(context.Background(), ctxKey{}, Info{
Addr: &net.IPAddr{
IP: net.IPv4(1, 2, 3, 4),
},
}),
expected: Info{
Addr: &net.IPAddr{
IP: net.IPv4(1, 2, 3, 4),
},
},
},
{
name: "context without client",
input: context.Background(),
expected: Info{},
},
{
name: "context with something else in the key",
input: context.WithValue(context.Background(), ctxKey{}, "unexpected!"),
expected: Info{},
},
}
for _, tt := range testCases {
t.Run(tt.name, func(t *testing.T) {
assert.Equal(t, tt.expected, FromContext(tt.input))
})
}
}
func TestMetadata(t *testing.T) {
source := map[string][]string{"test-key": {"test-val"}, "TEST-KEY-2": {"test-val"}}
md := NewMetadata(source)
assert.Equal(t, []string{"test-val"}, md.Get("test-key"))
assert.Equal(t, []string{"test-val"}, md.Get("test-KEY")) // case insensitive lookup
assert.Equal(t, []string{"test-val"}, md.Get("test-key-2")) // case insensitive lookup
// test if copy. In regular use, source cannot change
val := md.Get("test-key")
source["test-key"][0] = "abc"
assert.Equal(t, []string{"test-val"}, val)
assert.Empty(t, md.Get("non-existent-key"))
}
func TestUninstantiatedMetadata(t *testing.T) {
i := Info{}
assert.Empty(t, i.Metadata.Get("test"))
}