Jasmine 期望逻辑(期望 A OR B)

2022-01-11 00:00:00 unit-testing logic jasmine javascript

如果满足两个期望之一，我需要将测试设置为成功:

I need to set the test to succeed if one of the two expectations is met:

expect(mySpy.mostRecentCall.args[0]).toEqual(jasmine.any(Number));
expect(mySpy.mostRecentCall.args[0]).toEqual(false);

我希望它看起来像这样:

I expected it to look like this:

expect(mySpy.mostRecentCall.args[0]).toEqual(jasmine.any(Number)).or.toEqual(false);

我在文档中遗漏了什么还是我必须编写自己的匹配器?

Is there anything I missed in the docs or do I have to write my own matcher?

推荐答案

注意:此解决方案包含 Jasmine v2.0 之前版本的语法.有关自定义匹配器的更多信息，请参阅:https://jasmine.github.io/2.0/custom_matcher.html

Note: This solution contains syntax for versions prior to Jasmine v2.0. For more information on custom matchers now, see: https://jasmine.github.io/2.0/custom_matcher.html

Matchers.js 仅适用于单个结果修饰符" - not:

Matchers.js works with a single 'result modifier' only - not:

核心/Spec.js:

jasmine.Spec.prototype.expect = function(actual) {
  var positive = new (this.getMatchersClass_())(this.env, actual, this);
  positive.not = new (this.getMatchersClass_())(this.env, actual, this, true);
  return positive;

core/Matchers.js:

jasmine.Matchers = function(env, actual, spec, opt_isNot) {
  ...
  this.isNot = opt_isNot || false;
}
...
jasmine.Matchers.matcherFn_ = function(matcherName, matcherFunction) {
  return function() {
    ...
    if (this.isNot) {
      result = !result;
    }
  }
}

所以看起来您确实需要编写自己的匹配器(从 before 或 it 块中获取正确的 this).例如:

So it looks like you indeed need to write your own matcher (from within a before or it bloc for correct this). For example:

this.addMatchers({
   toBeAnyOf: function(expecteds) {
      var result = false;
      for (var i = 0, l = expecteds.length; i < l; i++) {
        if (this.actual === expecteds[i]) {
          result = true;
          break;
        }
      }
      return result;
   }
});

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