diff --git a/cc/gen_test.go b/cc/gen_test.go
new file mode 100644
index 0000000..a0f7308
--- /dev/null
+++ b/cc/gen_test.go
@@ -0,0 +1,63 @@
+// Copyright 2017 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 cc
+
+import (
+	"testing"
+)
+
+func TestGen(t *testing.T) {
+	t.Run("simple", func(t *testing.T) {
+		ctx := testCc(t, `
+		cc_library_shared {
+			name: "libfoo",
+			srcs: [
+				"foo.c",
+				"b.aidl",
+			],
+		}`)
+
+		aidl := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_core_shared").Rule("aidl")
+		libfoo := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_core_shared").Module().(*Module)
+
+		if !inList("-I"+aidl.Args["outDir"], libfoo.flags.GlobalFlags) {
+			t.Errorf("missing aidl includes in global flags")
+		}
+	})
+
+	t.Run("filegroup", func(t *testing.T) {
+		ctx := testCc(t, `
+		filegroup {
+			name: "fg",
+			srcs: ["b.aidl"],
+		}
+
+		cc_library_shared {
+			name: "libfoo",
+			srcs: [
+				"foo.c",
+				":fg",
+			],
+		}`)
+
+		aidl := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_core_shared").Rule("aidl")
+		libfoo := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_core_shared").Module().(*Module)
+
+		if !inList("-I"+aidl.Args["outDir"], libfoo.flags.GlobalFlags) {
+			t.Errorf("missing aidl includes in global flags")
+		}
+	})
+
+}