feat(service_test.go): add TestListContentsService to validate conten…

…t listing functionality

The addition of `TestListContentsService` in `service_test.go` ensures
that the service can handle listing contents correctly. This test checks
if the service can return a limited number of content items and
validates the content names against a specific pattern.

internal/app/service/service_test.go

@@ -3,8 +3,10 @@ package service
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"net"
 	"os"
+	"regexp"
 	"testing"
 	"time"
 
@@ -283,6 +285,27 @@ func TestDeleteContent(t *testing.T) {
 	assert.NoError(err, "expect no error from deleting content")
 }
 
+func TestListContentsService(t *testing.T) {
+	t.Parallel()
+	client, assert := setup(t)
+
+	name, namespace := "catalog", "dsc"
+	storeMultipleContents(client, assert, 10, name, namespace)
+	resp, err := client.ListContents(
+		context.Background(),
+		&content.ListParameters{Limit: 5},
+	)
+	assert.NoError(err, "expect no error from listing contents")
+	assert.Len(resp.Data, 5, "should return 5 contents")
+	nameRegex := regexp.MustCompile(fmt.Sprintf(`%s-\d+`, name))
+	validateListContents(validateListContentsParams{
+		Assert:    assert,
+		Data:      resp.Data,
+		NameRegex: nameRegex,
+		Namespace: namespace,
+	})
+}
+
 type validateListContentsParams struct {
 	Assert    *require.Assertions
 	Data      []*content.ContentCollection_Data