diff --git a/test/423-invoke-interface/src/Main.java b/test/423-invoke-interface/src/Main.java
new file mode 100644
index 0000000..fae857a
--- /dev/null
+++ b/test/423-invoke-interface/src/Main.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+public class Main {
+  static interface Itf {
+    public int return1();
+    public int return2();
+    public int return3();
+    public int return4();
+    public int return5();
+    public int return6();
+    public int return7();
+    public int return8();
+    public int return9();
+    public int return10();
+    public int return11();
+    public int return12();
+    public int return13();
+    public int return14();
+    public int return15();
+    public int return16();
+    public int return17();
+    public int return18();
+    public int return19();
+    public int return20();
+  }
+
+  static class ItfImpl1 implements Itf {
+    public int return1() { return 1; }
+    public int return2() { return 2; }
+    public int return3() { return 3; }
+    public int return4() { return 4; }
+    public int return5() { return 5; }
+    public int return6() { return 6; }
+    public int return7() { return 7; }
+    public int return8() { return 8; }
+    public int return9() { return 9; }
+    public int return10() { return 10; }
+    public int return11() { return 11; }
+    public int return12() { return 12; }
+    public int return13() { return 13; }
+    public int return14() { return 14; }
+    public int return15() { return 15; }
+    public int return16() { return 16; }
+    public int return17() { return 17; }
+    public int return18() { return 18; }
+    public int return19() { return 19; }
+    public int return20() { return 20; }
+  }
+
+  static class ItfImpl2 implements Itf {
+    public int return1() { return -1; }
+    public int return2() { return -2; }
+    public int return3() { return -3; }
+    public int return4() { return -4; }
+    public int return5() { return -5; }
+    public int return6() { return -6; }
+    public int return7() { return -7; }
+    public int return8() { return -8; }
+    public int return9() { return -9; }
+    public int return10() { return -10; }
+    public int return11() { return -11; }
+    public int return12() { return -12; }
+    public int return13() { return -13; }
+    public int return14() { return -14; }
+    public int return15() { return -15; }
+    public int return16() { return -16; }
+    public int return17() { return -17; }
+    public int return18() { return -18; }
+    public int return19() { return -19; }
+    public int return20() { return -20; }
+  }
+
+  public static void main(String[] args) {
+    $opt$InvokeInterface(new ItfImpl1(), 1);
+    $opt$InvokeInterface(new ItfImpl2(), -1);
+  }
+
+  public static void assertEquals(int expected, int value) {
+    if (expected != value) {
+      throw new Error("Expected " + expected +  ", got " + value);
+    }
+  }
+
+  public static void $opt$InvokeInterface(Itf object, int factor) {
+    assertEquals(factor * 1, object.return1());
+    assertEquals(factor * 2, object.return2());
+    assertEquals(factor * 3, object.return3());
+    assertEquals(factor * 4, object.return4());
+    assertEquals(factor * 5, object.return5());
+    assertEquals(factor * 6, object.return6());
+    assertEquals(factor * 7, object.return7());
+    assertEquals(factor * 8, object.return8());
+    assertEquals(factor * 9, object.return9());
+    assertEquals(factor * 10, object.return10());
+    assertEquals(factor * 11, object.return11());
+    assertEquals(factor * 12, object.return12());
+    assertEquals(factor * 13, object.return13());
+    assertEquals(factor * 14, object.return14());
+    assertEquals(factor * 15, object.return15());
+    assertEquals(factor * 16, object.return16());
+    assertEquals(factor * 17, object.return17());
+    assertEquals(factor * 18, object.return18());
+    assertEquals(factor * 19, object.return19());
+    assertEquals(factor * 20, object.return20());
+  }
+}