javascript 茉莉花中的全局`beforeEach`？
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Global `beforeEach` in jasmine?
提问by Freewind
I'm using Jasmine to write tests.
我正在使用 Jasmine 编写测试。
I have several test files, each file has a beforeEach, but they are exactly the same.
我有几个测试文件，每个文件都有一个beforeEach，但它们完全一样。
How do I provide a globalbeforeEachfor them?
我如何为他们提供全局beforeEach？
采纳答案by x1a4
You can put it in your spec_helper.jsfile and it should work fine.
你可以把它放在你的spec_helper.js文件中，它应该可以正常工作。
回答by Blaise
x1a4's answer confused me. This may be more clear:
x1a4 的回答让我很困惑。这可能更清楚：
When you declare a beforeEachfunction outsideall describeblocks, it will trigger before each test (so before each it). It does not matter if you declare the beforeEachbefore or after your describeblocks.
当你在所有块之外声明一个beforeEach函数时，它会在每次测试之前触发（所以在 each 之前）。声明块之前还是之后都没有关系。describeitbeforeEachdescribe
It's not mentioned in the documentation.
// Example:
beforeEach(function() {
localStorage.clear();
});
describe('My tests', function() {
describe('Test localstorage', function() {
it('Adds an item to localStorage', function() {
localStorage.setItem('foo', 'bar');
expect(localStorage.getItem('foo')).toBe('bar');
});
it('Is now empty because our beforeEach cleared localStorage', function() {
expect(localStorage.getItem('foo')).toBe(null);
});
});
});
