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noop_test.go
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noop_test.go
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// Copyright The OpenTelemetry 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 noop // import "go.opentelemetry.io/otel/log/noop"
import (
"context"
"reflect"
"testing"
"github.com/stretchr/testify/assert"
"go.opentelemetry.io/otel/log"
)
func TestImplementationNoPanics(t *testing.T) {
// Check that if type has an embedded interface and that interface has
// methods added to it than the No-Op implementation implements them.
t.Run("LoggerProvider", assertAllExportedMethodNoPanic(
reflect.ValueOf(LoggerProvider{}),
reflect.TypeOf((*log.LoggerProvider)(nil)).Elem(),
))
t.Run("Logger", assertAllExportedMethodNoPanic(
reflect.ValueOf(Logger{}),
reflect.TypeOf((*log.Logger)(nil)).Elem(),
))
}
func assertAllExportedMethodNoPanic(rVal reflect.Value, rType reflect.Type) func(*testing.T) {
return func(t *testing.T) {
for n := 0; n < rType.NumMethod(); n++ {
mType := rType.Method(n)
if !mType.IsExported() {
t.Logf("ignoring unexported %s", mType.Name)
continue
}
m := rVal.MethodByName(mType.Name)
if !m.IsValid() {
t.Errorf("unknown method for %s: %s", rVal.Type().Name(), mType.Name)
}
numIn := mType.Type.NumIn()
if mType.Type.IsVariadic() {
numIn--
}
args := make([]reflect.Value, numIn)
ctx := context.Background()
for i := range args {
aType := mType.Type.In(i)
if aType.Name() == "Context" {
// Do not panic on a nil context.
args[i] = reflect.ValueOf(ctx)
} else {
args[i] = reflect.New(aType).Elem()
}
}
assert.NotPanicsf(t, func() {
_ = m.Call(args)
}, "%s.%s", rVal.Type().Name(), mType.Name)
}
}
}
func TestNewTracerProvider(t *testing.T) {
provider := NewLoggerProvider()
assert.Equal(t, provider, LoggerProvider{})
logger := provider.Logger("")
assert.Equal(t, logger, Logger{})
}