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receiver_test.go
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receiver_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:https://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 kafkametricsreceiver
import (
"context"
"fmt"
"testing"
"github.com/Shopify/sarama"
"github.com/stretchr/testify/assert"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/component/componenttest"
"go.opentelemetry.io/collector/config/configtls"
"go.opentelemetry.io/collector/consumer/consumertest"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.opentelemetry.io/collector/receiver/scraperhelper"
"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/kafkaexporter"
)
func TestNewReceiver_invalid_version_err(t *testing.T) {
c := createDefaultConfig().(*Config)
c.ProtocolVersion = "invalid"
r, err := newMetricsReceiver(context.Background(), *c, componenttest.NewNopReceiverCreateSettings(), nil)
assert.Error(t, err)
assert.Nil(t, r)
}
func TestNewReceiver_invalid_scraper_error(t *testing.T) {
c := createDefaultConfig().(*Config)
c.Scrapers = []string{"brokers", "cpu"}
mockScraper := func(context.Context, Config, *sarama.Config, component.ReceiverCreateSettings) (scraperhelper.Scraper, error) {
return nil, nil
}
allScrapers["brokers"] = mockScraper
r, err := newMetricsReceiver(context.Background(), *c, componenttest.NewNopReceiverCreateSettings(), nil)
assert.Nil(t, r)
expectedError := fmt.Errorf("no scraper found for key: cpu")
if assert.Error(t, err) {
assert.Equal(t, expectedError, err)
}
}
func TestNewReceiver_invalid_auth_error(t *testing.T) {
c := createDefaultConfig().(*Config)
c.Authentication = kafkaexporter.Authentication{
TLS: &configtls.TLSClientSetting{
TLSSetting: configtls.TLSSetting{
CAFile: "/invalid",
},
},
}
r, err := newMetricsReceiver(context.Background(), *c, componenttest.NewNopReceiverCreateSettings(), nil)
assert.Error(t, err)
assert.Contains(t, err.Error(), "failed to load TLS config")
assert.Nil(t, r)
}
func TestNewReceiver(t *testing.T) {
c := createDefaultConfig().(*Config)
c.Scrapers = []string{"brokers"}
mockScraper := func(context.Context, Config, *sarama.Config, component.ReceiverCreateSettings) (scraperhelper.Scraper, error) {
return scraperhelper.NewScraper("brokers", func(ctx context.Context) (pmetric.Metrics, error) {
return pmetric.Metrics{}, nil
})
}
allScrapers["brokers"] = mockScraper
r, err := newMetricsReceiver(context.Background(), *c, componenttest.NewNopReceiverCreateSettings(), consumertest.NewNop())
assert.Nil(t, err)
assert.NotNil(t, r)
}
func TestNewReceiver_handles_scraper_error(t *testing.T) {
c := createDefaultConfig().(*Config)
c.Scrapers = []string{"brokers"}
mockScraper := func(context.Context, Config, *sarama.Config, component.ReceiverCreateSettings) (scraperhelper.Scraper, error) {
return nil, fmt.Errorf("fail")
}
allScrapers["brokers"] = mockScraper
r, err := newMetricsReceiver(context.Background(), *c, componenttest.NewNopReceiverCreateSettings(), consumertest.NewNop())
assert.NotNil(t, err)
assert.Nil(t, r)
}