我正在使用Tape.js在节点js中学习单元测试,到目前为止我只发现测试函数返回的结果很有用,但是如果测试回调是否恰好n次呢?
我有这个函数,它调用一次回调函数n次:
const repeatCallback = (n, cb) => {
for (let i = 0; i < n; i++) {
cb();
}
}
module.exports = repeatCallback;
和磁带测试:
const repeatCallback = require('./repeatCallback.js');
const test = require('tape');
test('repeat callback tests', (t) => {
t.plan(3);
repeatCallback(3, () => {console.log('callack called');})
});
我收到错误:不好1计划!=计数
如何在测试中更新计数以匹配已调用的次数?
感谢
答案 0 :(得分:0)
只计算调用函数的次数:
const repeatCallback = require('./repeatCallback.js');
const test = require('tape');
test('repeat callback tests', (t) => {
t.plan(1);
let count = 0;
repeatCallback(3, () => { count++; });
t.equal(count, 3);
});