React - sinon 测试 - 获取 TypeError：无法读取未定义的属性“子字符串”

Question

I want to test if the function destructures the given arguments properly. The function is:

function testFunc(...args) {
  const [nameOfClass, itemName] = args;

  return <div className={nameOfClass}>{itemName}</div>
}

I am using mocha, chai and sinon to test if arguments provided to that function are properly destructured. However the test give me "AssertionError: expected false to be true":

const funcArguments = ['testClass', 'testItemName'];
const spy = sinon.spy();
testFunc(...funcArguments, spy);
expect(spy.calledWithExactly('testClass', 'testItemName')).to.be.true

Is it the fault of destructuring?

Answer 1

Thanks to the input in the comments, I adjusted the test code to actually call the spy. It looks like it now and it gives the proper result:

const funcArguments = ['testClass', 'testItemName'];
const spiedTestFunc = sinon.spy(testFunc);
spiedTestFunc(...funcArguments);
expect(spiedTestFunc.calledWithExactly('testClass', 'testItemName')).to.be.true