Implement bp2build converter for rust_protobuf_host

Test: go test
Bug: 295925256
Change-Id: I43b7359da8fc19f4338e2583448b7617194df5e6
diff --git a/bp2build/rust_protobuf_conversion_test.go b/bp2build/rust_protobuf_conversion_test.go
new file mode 100644
index 0000000..a779c36
--- /dev/null
+++ b/bp2build/rust_protobuf_conversion_test.go
@@ -0,0 +1,46 @@
+package bp2build
+
+import (
+	"android/soong/android"
+	"android/soong/rust"
+	"testing"
+)
+
+func runRustProtobufTestCase(t *testing.T, tc Bp2buildTestCase) {
+	t.Helper()
+	RunBp2BuildTestCase(t, registerRustProtobufModuleTypes, tc)
+}
+
+func registerRustProtobufModuleTypes(ctx android.RegistrationContext) {
+	ctx.RegisterModuleType("rust_protobuf_host", rust.RustProtobufHostFactory)
+
+}
+
+func TestRustProtobufHostTestCase(t *testing.T) {
+	runRustProtobufTestCase(t, Bp2buildTestCase{
+		Dir:       "external/rust/crates/foo",
+		Blueprint: "",
+		Filesystem: map[string]string{
+			"external/rust/crates/foo/src/lib.rs":    "",
+			"external/rust/crates/foo/src/helper.rs": "",
+			"external/rust/crates/foo/Android.bp": `
+rust_protobuf_host {
+	name: "libfoo",
+	crate_name: "foo",
+	protos: ["src/foo.proto"],
+    bazel_module: { bp2build_available: true },
+}
+`,
+		},
+		ExpectedBazelTargets: []string{
+			makeBazelTargetHostOrDevice("proto_library", "libfoo_proto", AttrNameToString{
+				"srcs": `["src/foo.proto"]`,
+			}, android.HostSupported),
+			makeBazelTargetHostOrDevice("rust_proto_library", "libfoo", AttrNameToString{
+				"crate_name": `"foo"`,
+				"deps":       `[":libfoo_proto"]`,
+			}, android.HostSupported),
+		},
+	},
+	)
+}