1 files changed, 136 insertions, 0 deletions
diff --git a/rust/protobuf_test.go b/rust/protobuf_test.go
new file mode 100644
index 000000000..f0f5ec0e9
--- /dev/null
+++ b/rust/protobuf_test.go
@@ -0,0 +1,136 @@
+// Copyright 2020 The Android Open Source Project
+//
+// 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 rust
+
+import (
+	"strings"
+	"testing"
+
+	"android/soong/android"
+)
+
+func TestRustProtobuf(t *testing.T) {
+	ctx := testRust(t, `
+		rust_protobuf {
+			name: "librust_proto",
+			protos: ["buf.proto", "proto.proto"],
+			crate_name: "rust_proto",
+			source_stem: "buf",
+			shared_libs: ["libfoo_shared"],
+			static_libs: ["libfoo_static"],
+		}
+		cc_library_shared {
+			name: "libfoo_shared",
+			export_include_dirs: ["shared_include"],
+		}
+		cc_library_static {
+			name: "libfoo_static",
+			export_include_dirs: ["static_include"],
+		}
+	`)
+	// Check that libprotobuf is added as a dependency.
+	librust_proto := ctx.ModuleForTests("librust_proto", "android_arm64_armv8-a_dylib").Module().(*Module)
+	if !android.InList("libprotobuf", librust_proto.Properties.AndroidMkDylibs) {
+		t.Errorf("libprotobuf dependency missing for rust_protobuf (dependency missing from AndroidMkDylibs)")
+	}
+
+	// Make sure the correct plugin is being used.
+	librust_proto_out := ctx.ModuleForTests("librust_proto", "android_arm64_armv8-a_source").Output("buf.rs")
+	cmd := librust_proto_out.RuleParams.Command
+	if w := "protoc-gen-rust"; !strings.Contains(cmd, w) {
+		t.Errorf("expected %q in %q", w, cmd)
+	}
+
+	// Check exported include directories
+	if w := "-Ishared_include"; !strings.Contains(cmd, w) {
+		t.Errorf("expected %q in %q", w, cmd)
+	}
+	if w := "-Istatic_include"; !strings.Contains(cmd, w) {
+		t.Errorf("expected %q in %q", w, cmd)
+	}
+
+	// Check proto.rs, the second protobuf, is listed as an output
+	librust_proto_outputs := ctx.ModuleForTests("librust_proto", "android_arm64_armv8-a_source").AllOutputs()
+	if android.InList("proto.rs", librust_proto_outputs) {
+		t.Errorf("rust_protobuf is not producing multiple outputs; expected 'proto.rs' in list, got: %#v ",
+			librust_proto_outputs)
+	}
+}
+
+func TestRustGrpc(t *testing.T) {
+	ctx := testRust(t, `
+		rust_protobuf {
+			name: "librust_grpcio",
+			protos: ["buf.proto"],
+			grpc_protos: ["foo.proto", "proto.proto"],
+			crate_name: "rust_grpcio",
+			source_stem: "buf",
+		}
+	`)
+
+	// Check that libprotobuf is added as a dependency.
+	librust_grpcio_module := ctx.ModuleForTests("librust_grpcio", "android_arm64_armv8-a_dylib").Module().(*Module)
+
+	// Check that libgrpcio is added as a dependency.
+	if !android.InList("libgrpcio", librust_grpcio_module.Properties.AndroidMkDylibs) {
+		t.Errorf("libgrpcio dependency missing for rust_grpcio (dependency missing from AndroidMkDylibs)")
+	}
+
+	// Check that libfutures is added as a dependency.
+	if !android.InList("libfutures", librust_grpcio_module.Properties.AndroidMkDylibs) {
+		t.Errorf("libfutures dependency missing for rust_grpcio (dependency missing from AndroidMkDylibs)")
+	}
+
+	// Make sure the correct plugin is being used.
+	librust_grpcio_out := ctx.ModuleForTests("librust_grpcio", "android_arm64_armv8-a_source").Output("foo_grpc.rs")
+	cmd := librust_grpcio_out.RuleParams.Command
+	if w := "protoc-gen-grpc"; !strings.Contains(cmd, w) {
+		t.Errorf("expected %q in %q", w, cmd)
+	}
+
+	// Check that we're including the exported directory from libprotobuf-cpp-full
+	if w := "-I" + rustDefaultsDir + "libprotobuf-cpp-full-includes"; !strings.Contains(cmd, w) {
+		t.Errorf("expected %q in %q", w, cmd)
+	}
+
+	// Check proto.rs, the second protobuf, is listed as an output
+	librust_grpcio_outputs := ctx.ModuleForTests("librust_grpcio", "android_arm64_armv8-a_source").AllOutputs()
+	if android.InList("proto_grpc.rs", librust_grpcio_outputs) {
+		t.Errorf("rust_protobuf is not producing multiple outputs; expected 'proto_grpc.rs' in list, got: %#v ",
+			librust_grpcio_outputs)
+	}
+}
+
+func TestRustProtoErrors(t *testing.T) {
+	testRustError(t, "A proto can only be added once to either grpc_protos or protos.*", `
+		rust_protobuf {
+			name: "librust_grpcio",
+			protos: ["buf.proto"],
+			grpc_protos: ["buf.proto"],
+			crate_name: "rust_grpcio",
+			source_stem: "buf",
+		}
+	`)
+
+	testRustError(t, "proto filenames must be unique across  'protos' and 'grpc_protos'.*", `
+		rust_protobuf {
+			name: "librust_grpcio",
+			protos: ["buf.proto"],
+			grpc_protos: ["proto/buf.proto"],
+			crate_name: "rust_grpcio",
+			source_stem: "buf",
+		}
+	`)
+}