add support for java stream protos in protoDeps

The java module currently supports full, lite, micro, and nano protobuf
types, but it doesn't support the stream type. This commit fixes that.

Bug: 217241348
Test: go test ./java -run TestProto
Change-Id: Ifae51734103d424892b66da43ca51e7b6fbe45ba

java/proto.go

@@ -73,13 +73,15 @@ func genProto(ctx android.ModuleContext, protoFiles android.Paths, flags android
 }
 
 func protoDeps(ctx android.BottomUpMutatorContext, p *android.ProtoProperties) {
+	const unspecifiedProtobufPluginType = ""
 	if String(p.Proto.Plugin) == "" {
 		switch String(p.Proto.Type) {
+		case "stream": // does not require additional dependencies
 		case "micro":
 			ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-micro")
 		case "nano":
 			ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-nano")
-		case "lite", "":
+		case "lite", unspecifiedProtobufPluginType:
 			ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-lite")
 		case "full":
 			if ctx.Host() || ctx.BazelConversionMode() {

java/proto_test.go

@@ -0,0 +1,53 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// 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
+//
+//     http://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 java
+
+import (
+	"strings"
+	"testing"
+
+	"android/soong/android"
+)
+
+const protoModules = `
+java_library_static {
+    name: "libprotobuf-java-lite",
+}
+`
+
+func TestProtoStream(t *testing.T) {
+	bp := `
+		java_library {
+			name: "java-stream-protos",
+			proto: {
+				type: "stream",
+			},
+			srcs: [
+				"a.proto",
+				"b.proto",
+			],
+		}
+	`
+
+	ctx := android.GroupFixturePreparers(
+		PrepareForIntegrationTestWithJava,
+	).RunTestWithBp(t, protoModules+bp)
+
+	proto0 := ctx.ModuleForTests("java-stream-protos", "android_common").Output("proto/proto0.srcjar")
+
+	if cmd := proto0.RuleParams.Command; !strings.Contains(cmd, "--javastream_out=") {
+		t.Errorf("expected '--javastream_out' in %q", cmd)
+	}
+}