feat(generator/dart): update the generated package names

generator/internal/dart/dart.go

@@ -180,7 +180,7 @@ func modelPackageName(api *api.API, packageNameOverride string) string {
 	if len(packageNameOverride) > 0 {
 		return packageNameOverride
 	}
-	return api.Name
+	return "google_cloud_" + strcase.ToSnake(api.Name)
 }
 
 func validatePackageName(newPackage, elementName, sourceSpecificationPackageName string) error {

generator/internal/dart/dart_test.go

@@ -0,0 +1,48 @@
+// Copyright 2025 Google LLC
+//
+// 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
+//
+//     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 dart
+
+import (
+	"io/fs"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestDart_GeneratedFiles(t *testing.T) {
+	files := generatedFiles()
+	if len(files) == 0 {
+		t.Errorf("expected a non-empty list of template files from generatedFiles()")
+	}
+}
+
+func TestDart_TemplatesAvailable(t *testing.T) {
+	var count = 0
+	fs.WalkDir(dartTemplates, "templates", func(path string, d fs.DirEntry, err error) error {
+		if filepath.Ext(path) != ".mustache" {
+			return nil
+		}
+		if strings.Count(d.Name(), ".") == 1 {
+			// skip partials
+			return nil
+		}
+		count++
+		return nil
+	})
+
+	if count == 0 {
+		t.Errorf("no go templates found")
+	}
+}

generator/internal/dart/darttemplate.go

@@ -31,7 +31,6 @@ type modelAnnotations struct {
 	CopyrightYear     string
 	BoilerPlate       []string
 	DefaultHost       string
-	DartPackage       string
 	DocLines          []string
 }
 
@@ -155,8 +154,7 @@ func annotateModel(model *api.API, options map[string]string) (*modelAnnotations
 			}
 			return ""
 		}(),
-		DartPackage: "google_" + modelPackageName(model, packageNameOverride),
-		DocLines:    strings.Split(model.Description, "\n"),
+		DocLines: strings.Split(model.Description, "\n"),
 	}
 
 	model.Codec = ann

generator/internal/dart/darttemplate_test.go

@@ -0,0 +1,36 @@
+// Copyright 2025 Google LLC
+//
+// 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
+//
+//     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 dart
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/googleapis/google-cloud-rust/generator/internal/api"
+)
+
+func TestDart_AnnotateModel(t *testing.T) {
+	model := api.NewTestAPI([]*api.Message{}, []*api.Enum{}, []*api.Service{})
+	_, err := annotateModel(model, map[string]string{})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	codec := model.Codec.(*modelAnnotations)
+
+	if diff := cmp.Diff("google_cloud_test", codec.PackageName); diff != "" {
+		t.Errorf("mismatch in Codec.PackageName (-want, +got)\n:%s", diff)
+	}
+}

generator/internal/dart/templates/pubspec.yaml.mustache

@@ -18,7 +18,7 @@ limitations under the License.
 #{{{.}}}
 {{/Codec.BoilerPlate}}
 
-name: {{Codec.DartPackage}}
+name: {{Codec.PackageName}}
 description: The Google Cloud client library for the {{Title}}.
 version: 0.1.0
 

generator/testdata/dart/protobuf/golden/secretmanager/pubspec.yaml

@@ -14,7 +14,7 @@
 #
 # Code generated by sidekick. DO NOT EDIT.
 
-name: google_secretmanager
+name: google_cloud_secretmanager
 description: The Google Cloud client library for the Secret Manager API.
 version: 0.1.0