// Copyright 2019, 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 vmmetricsreceiver

import (
	"context"
	"runtime"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"go.uber.org/zap"

	"github.com/open-telemetry/opentelemetry-collector/config/configcheck"
	"github.com/open-telemetry/opentelemetry-collector/config/configerror"
)

func TestCreateDefaultConfig(t *testing.T) {
	factory := &Factory{}
	cfg := factory.CreateDefaultConfig()
	assert.NotNil(t, cfg, "failed to create default config")
	assert.NoError(t, configcheck.ValidateConfig(cfg))
}

func TestCreateReceiver(t *testing.T) {
	factory := &Factory{}
	cfg := factory.CreateDefaultConfig()

	tReceiver, err := factory.CreateTraceReceiver(context.Background(), zap.NewNop(), cfg, nil)

	assert.Equal(t, err, configerror.ErrDataTypeIsNotSupported)
	assert.Nil(t, tReceiver)

	mReceiver, err := factory.CreateMetricsReceiver(zap.NewNop(), cfg, nil)

	// Currently vmmetrics receiver is only supported on linux.
	if runtime.GOOS != "linux" {
		require.Nil(t, tReceiver)
		require.NotNil(t, err)
		return
	}

	assert.Nil(t, err)
	assert.NotNil(t, mReceiver)
}
