@Test
public void testDeclParams2() throws IOException, CopperParserException {
String input =
"def foo(x:Int,y:Int):Int = 5+x*y\n" +
"foo(7,2)";
TypedAST res = (TypedAST)new Wyvern().parse(new StringReader(input), "test input");
Assert.assertEquals(res.typecheck(Globals.getStandardEnv(), Optional.empty()), Int.getInstance());
Assert.assertEquals(res.evaluate(Globals.getStandardEnv()).toString(), "IntegerConstant(19)");
}