Autogenerate config marshal and unmarshal test with datagen

.chloggen/12906.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. receiver/otlp)
+component: cmd/mdatagen
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: "Add generated config marshal/unmarshal tests to mdatagen"
+
+# One or more tracking issues or pull requests related to the change
+issues: [12906]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

.chloggen/config.yaml

@@ -24,7 +24,6 @@ components:
     - extension/xextension
     - extension/zpages
     - pdata/pprofile
-    - pdata/xpdata
     - pkg/config/configauth
     - pkg/config/configcompression
     - pkg/config/configgrpc
@@ -50,6 +49,7 @@ components:
     - pkg/xconnector
     - pkg/xexporter
     - pkg/xexporterhelper
+    - pkg/xpdata
     - pkg/xprocessor
     - pkg/xreceiver
     - pkg/xscraper

cmd/mdatagen/internal/templates/component_test.go.tmpl

@@ -7,6 +7,7 @@
 package {{ .Package }}
 
 import (
+	"encoding/json"
 	{{- if not (and .Tests.SkipLifecycle .Tests.SkipShutdown) }}
 	"context"
 	{{- end }}
@@ -18,6 +19,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/component/componenttest"
+	"go.opentelemetry.io/collector/confmap"
 	{{- if not (and .Tests.SkipLifecycle .Tests.SkipShutdown) }}
 	"go.opentelemetry.io/collector/confmap/confmaptest"
 	{{- if isExporter }}
@@ -58,6 +60,7 @@ import (
 	"go.opentelemetry.io/collector/pdata/ptrace"
 	{{- end }}
 	{{- end }}
+	"go.yaml.in/yaml/v3"
 )
 
 var typ = component.MustNewType("{{ .Type }}")
@@ -70,6 +73,21 @@ func TestComponentConfigStruct(t *testing.T) {
 	require.NoError(t, componenttest.CheckConfigStruct(NewFactory().CreateDefaultConfig()))
 }
 
+func TestComponentConfigMarshal(t *testing.T) {
+	cfg := NewFactory().CreateDefaultConfig()
+	cm := confmap.New()
+	require.NoError(t, cm.Marshal(cfg))
+
+	data := cm.ToStringMap()
+	_, err := yaml.Marshal(data)
+	require.NoError(t, err)
+	_, err = json.Marshal(data)
+	require.NoError(t, err)
+
+	roundTrip := NewFactory().CreateDefaultConfig()
+	require.NoError(t, cm.Unmarshal(&roundTrip))
+}
+
 {{ if not (and .Tests.SkipLifecycle .Tests.SkipShutdown) -}}
 {{ if isExporter -}}
 func TestComponentLifecycle(t *testing.T) {

connector/forwardconnector/go.mod

@@ -18,6 +18,7 @@ require (
 	go.opentelemetry.io/collector/pipeline v1.52.0
 	go.opentelemetry.io/collector/pipeline/xpipeline v0.146.1
 	go.uber.org/goleak v1.3.0
+	go.yaml.in/yaml/v3 v3.0.4
 )
 
 require (
@@ -49,7 +50,6 @@ require (
 	go.opentelemetry.io/otel/trace v1.40.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.1 // indirect
-	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/sys v0.40.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )