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我正在为我的一些函数编写单元测试,而测试运行器似乎对绑定函数有问题。我绑定了一个函数,所以我在内部函数中引用了这个。下面是代码:Angular,karma/jasmine tests not handling .bind
loadStates: function(name, stateName, options) {
if (myModule.getModule(name) !== undefined) {
this.prepState(name, stateName, options);
} else {
var bindForCheck = this.prepState.bind(this);
//module cannot be found check for 5 seconds
$log.warn("Requesting " + name + "...");
var timeToCheck = true;
setTimeout(function() {
timeToCheck = false;
}, 5000);
var check = {
init: function() {
check.checkAgain();
},
checkAgain: function() {
if (timeToCheck) {
if (myModule.getModule(name) !== undefined) {
bindForCheck(name, stateName, options);
} else {
//still doesn't exists
setTimeout(check.checkAgain, 200);
}
} else {
//doesn't exist after 5 seconds
$log.error("Requested module (" + name + ") could not be found at this time.");
}
}
};
check.init();
}
}
所以这个问题是与
var bindForCheck = this.prepState.bind(this);
刚刚让我叫check.checkAgain()函数中的外部函数。当我尝试运行功能
TypeError: 'undefined' is not a function (evaluating 'this.prepState.bind(this)')
在这里可以使用一些帮助的其他部分
测试运行是吐回这个错误,这我难倒如何解决这一问题。谢谢!