src/third_party/mozjs-45/js/src/jit-test/tests/saved-stacks/function-display-name.js

// Test the functionDisplayName of SavedFrame instances.

function uno() { return dos(); }
const dos = () => tres.quattro();
const tres = {
  quattro: () => saveStack()
};

const frame = uno();

assertEq(frame.functionDisplayName, "tres.quattro");
assertEq(frame.parent.functionDisplayName, "dos");
assertEq(frame.parent.parent.functionDisplayName, "uno");
assertEq(frame.parent.parent.parent.functionDisplayName, null);

assertEq(frame.parent.parent.parent.parent, null);