From aa7dd0510b1f214db330af6e0a17af7f4961eacf Mon Sep 17 00:00:00 2001
From: Antoine Toulme <antoine@lunar-ocean.com>
Date: Fri, 12 Jan 2024 14:15:57 -0800
Subject: [PATCH] [chore] add generated lifecycle tests (#30489)

Relates to
https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/27849
---
 .../generated_component_test.go               | 86 +++++++++++++++++++
 connector/servicegraphconnector/go.mod        |  2 +-
 connector/servicegraphconnector/metadata.yaml |  3 +
 3 files changed, 90 insertions(+), 1 deletion(-)
 create mode 100644 connector/servicegraphconnector/generated_component_test.go

diff --git a/connector/servicegraphconnector/generated_component_test.go b/connector/servicegraphconnector/generated_component_test.go
new file mode 100644
index 000000000000..9f84efa6bee6
--- /dev/null
+++ b/connector/servicegraphconnector/generated_component_test.go
@@ -0,0 +1,86 @@
+// Code generated by mdatagen. DO NOT EDIT.
+
+package servicegraphconnector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/component/componenttest"
+
+	"go.opentelemetry.io/collector/connector"
+	"go.opentelemetry.io/collector/connector/connectortest"
+	"go.opentelemetry.io/collector/consumer/consumertest"
+
+	"go.opentelemetry.io/collector/confmap/confmaptest"
+)
+
+// assertNoErrorHost implements a component.Host that asserts that there were no errors.
+type assertNoErrorHost struct {
+	component.Host
+	*testing.T
+}
+
+var _ component.Host = (*assertNoErrorHost)(nil)
+
+// newAssertNoErrorHost returns a new instance of assertNoErrorHost.
+func newAssertNoErrorHost(t *testing.T) component.Host {
+	return &assertNoErrorHost{
+		componenttest.NewNopHost(),
+		t,
+	}
+}
+
+func (aneh *assertNoErrorHost) ReportFatalError(err error) {
+	assert.NoError(aneh, err)
+}
+
+func TestComponentLifecycle(t *testing.T) {
+	factory := NewFactory()
+
+	tests := []struct {
+		name     string
+		createFn func(ctx context.Context, set connector.CreateSettings, cfg component.Config) (component.Component, error)
+	}{
+
+		{
+			name: "traces_to_metrics",
+			createFn: func(ctx context.Context, set connector.CreateSettings, cfg component.Config) (component.Component, error) {
+				return factory.CreateTracesToMetrics(ctx, set, cfg, consumertest.NewNop())
+			},
+		},
+	}
+
+	cm, err := confmaptest.LoadConf("metadata.yaml")
+	require.NoError(t, err)
+	cfg := factory.CreateDefaultConfig()
+	sub, err := cm.Sub("tests::config")
+	require.NoError(t, err)
+	require.NoError(t, component.UnmarshalConfig(sub, cfg))
+
+	for _, test := range tests {
+		t.Run(test.name+"-shutdown", func(t *testing.T) {
+			c, err := test.createFn(context.Background(), connectortest.NewNopCreateSettings(), cfg)
+			require.NoError(t, err)
+			err = c.Shutdown(context.Background())
+			require.NoError(t, err)
+		})
+
+		t.Run(test.name+"-lifecycle", func(t *testing.T) {
+
+			firstConnector, err := test.createFn(context.Background(), connectortest.NewNopCreateSettings(), cfg)
+			require.NoError(t, err)
+			host := newAssertNoErrorHost(t)
+			require.NoError(t, err)
+			require.NoError(t, firstConnector.Start(context.Background(), host))
+			require.NoError(t, firstConnector.Shutdown(context.Background()))
+			secondConnector, err := test.createFn(context.Background(), connectortest.NewNopCreateSettings(), cfg)
+			require.NoError(t, err)
+			require.NoError(t, secondConnector.Start(context.Background(), host))
+			require.NoError(t, secondConnector.Shutdown(context.Background()))
+		})
+	}
+}
diff --git a/connector/servicegraphconnector/go.mod b/connector/servicegraphconnector/go.mod
index 5a8bfb39b091..fbe7002dad1f 100644
--- a/connector/servicegraphconnector/go.mod
+++ b/connector/servicegraphconnector/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/processor/servicegraphprocessor v0.92.0
 	github.com/stretchr/testify v1.8.4
 	go.opentelemetry.io/collector/component v0.92.1-0.20240112172857-83d463ceba06
+	go.opentelemetry.io/collector/confmap v0.92.1-0.20240112172857-83d463ceba06
 	go.opentelemetry.io/collector/connector v0.92.1-0.20240112172857-83d463ceba06
 	go.opentelemetry.io/collector/consumer v0.92.1-0.20240112172857-83d463ceba06
 	go.opentelemetry.io/otel/metric v1.21.0
@@ -44,7 +45,6 @@ require (
 	go.opencensus.io v0.24.0 // indirect
 	go.opentelemetry.io/collector v0.92.1-0.20240112172857-83d463ceba06 // indirect
 	go.opentelemetry.io/collector/config/configtelemetry v0.92.1-0.20240112172857-83d463ceba06 // indirect
-	go.opentelemetry.io/collector/confmap v0.92.1-0.20240112172857-83d463ceba06 // indirect
 	go.opentelemetry.io/collector/exporter v0.92.1-0.20240112172857-83d463ceba06 // indirect
 	go.opentelemetry.io/collector/featuregate v1.0.2-0.20240112172857-83d463ceba06 // indirect
 	go.opentelemetry.io/collector/pdata v1.0.2-0.20240112172857-83d463ceba06 // indirect
diff --git a/connector/servicegraphconnector/metadata.yaml b/connector/servicegraphconnector/metadata.yaml
index b6475ebc66cb..7a27fb79dbfd 100644
--- a/connector/servicegraphconnector/metadata.yaml
+++ b/connector/servicegraphconnector/metadata.yaml
@@ -7,3 +7,6 @@ status:
   distributions: [contrib, sumo, grafana]
   codeowners:
     active: [jpkrohling, mapno]
+
+tests:
+  config: