opentelemetry-collector/component/componenthelper/component_test.go

70 lines
2.2 KiB
Go

// 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 componenthelper
import (
"context"
"errors"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/component/componenttest"
)
func TestDefaultSettings(t *testing.T) {
st := DefaultComponentSettings()
require.NotNil(t, st)
cp := NewComponent(st)
require.NoError(t, cp.Start(context.Background(), componenttest.NewNopHost()))
require.NoError(t, cp.Shutdown(context.Background()))
}
func TestWithStart(t *testing.T) {
startCalled := false
st := DefaultComponentSettings()
st.Start = func(context.Context, component.Host) error { startCalled = true; return nil }
cp := NewComponent(st)
assert.NoError(t, cp.Start(context.Background(), componenttest.NewNopHost()))
assert.True(t, startCalled)
}
func TestWithStart_ReturnError(t *testing.T) {
want := errors.New("my_error")
st := DefaultComponentSettings()
st.Start = func(context.Context, component.Host) error { return want }
cp := NewComponent(st)
assert.Equal(t, want, cp.Start(context.Background(), componenttest.NewNopHost()))
}
func TestWithShutdown(t *testing.T) {
shutdownCalled := false
st := DefaultComponentSettings()
st.Shutdown = func(context.Context) error { shutdownCalled = true; return nil }
cp := NewComponent(st)
assert.NoError(t, cp.Shutdown(context.Background()))
assert.True(t, shutdownCalled)
}
func TestWithShutdown_ReturnError(t *testing.T) {
want := errors.New("my_error")
st := DefaultComponentSettings()
st.Shutdown = func(context.Context) error { return want }
cp := NewComponent(st)
assert.Equal(t, want, cp.Shutdown(context.Background()))
}