void () { doTest("tuple[bool, int, str]", """ from typing import TypeVar T = TypeVar('T') U = TypeVar('U') V = TypeVar('V') def myid(x: T) -> T: pass def f(x: T, y: U, z: V): return myid(x), myid(y), myid(z) expr = f(True, 1, 'foo') """); }