tracker.verify()

遍历传给 tracker.calls() 的函数列表，对于未按预期调用次数的函数将抛出错误。

const assert = require('assert');

// 创建调用跟踪器。
const tracker = new assert.CallTracker();

function func() {}

// 返回封装 func() 的函数，其必须在 tracker.verify() 之前调用准确次数。
const callsfunc = tracker.calls(func, 2);

callsfunc();

// 会抛出错误，因为 callfunc() 只被调用了一次。
tracker.verify();

Iterates through the list of functions passed to tracker.calls() and will throw an error for functions that have not been called the expected number of times.

const assert = require('assert');

// Creates call tracker.
const tracker = new assert.CallTracker();

function func() {}

// Returns a function that wraps func() that must be called exact times
// before tracker.verify().
const callsfunc = tracker.calls(func, 2);

callsfunc();

// Will throw an error since callsfunc() was only called once.
tracker.verify();