Enhance googlecloudmonitoringreceiver: Add Unit Tests for Metric Conversion and Improve Edge Case Coverage

.chloggen/googlecloudmonitoringreceiver-unit-tests.yaml

@@ -0,0 +1,30 @@
+# 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. filelogreceiver)
+component: googlecloudmonitoringreceiver
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Added comprehensive unit tests for the `googlecloudmonitoringreceiver` component to improve code coverage and reliability.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [36815]
+
+# (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: |
+  - Focused on validating edge cases and error scenarios.
+  - Improved coverage for metric conversion and validation logic.
+  - Enhanced mock setups to simulate Google Cloud API behavior accurately.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# 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: []

receiver/googlecloudmonitoringreceiver/factory_test.go

@@ -0,0 +1,42 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package googlecloudmonitoringreceiver
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"go.opentelemetry.io/collector/consumer/consumertest"
+	"go.opentelemetry.io/collector/receiver/receivertest"
+
+	"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/googlecloudmonitoringreceiver/internal/metadata"
+)
+
+func TestCreateDefaultConfig(t *testing.T) {
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	assert.NotNil(t, cfg, "failed to create default config")
+}
+
+func TestType(t *testing.T) {
+	factory := NewFactory()
+	assert.Equal(t, metadata.Type, factory.Type())
+}
+
+func TestCreateMetrics(t *testing.T) {
+	factory := NewFactory()
+	cfg := factory.CreateDefaultConfig()
+	receiverConfig := cfg.(*Config)
+
+	receiver, err := factory.CreateMetrics(
+		context.Background(),
+		receivertest.NewNopSettings(),
+		receiverConfig,
+		consumertest.NewNop(),
+	)
+
+	assert.NoError(t, err)
+	assert.NotNil(t, receiver, "failed to create metrics receiver")
+}

receiver/googlecloudmonitoringreceiver/go.mod

@@ -69,7 +69,7 @@ require (
 	golang.org/x/text v0.19.0 // indirect
 	google.golang.org/api v0.205.0
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20241021214115-324edc3d5d38 // indirect
-	google.golang.org/grpc v1.67.1 // indirect
+	google.golang.org/grpc v1.67.1
 	google.golang.org/protobuf v1.35.2
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )