[英]How to test a function that returns functions?
Here I have a function generateBlocks
that takes in an array blocks
and a function onBlockClick
. 这里我有一个函数generateBlocks
,它接受一个数组blocks
和一个函数onBlockClick
。 It returns an array of object where each object has two properties label
and onClick
. 它返回一个对象数组,其中每个对象都有两个属性label
和onClick
。
function generateBlocks(blocks, onBlockClick){
return blocks.map(block => (
{
label: block.label,
onClick: ()=>onBlockClick(block.name)
}
))
}
I'm unable test it's return value. 我无法测试它的返回值。 Here's the test case: 这是测试用例:
const blocks = [{label: "A", name: "a"}, {label: "B", name: "b"}];
const onBlockClick = someFunction(){};
expect(generateBlocks(blocks, onBlockClick)).to.deep.equal(expected)
I cannot create expected
as [[{label: "A", onClick: ()=>onBlockClick("A")},...]
because function reference will be different. 我无法创建expected
[[{label: "A", onClick: ()=>onBlockClick("A")},...]
因为函数引用会有所不同。
So how do I refactor generateBlocks function to make it testable? 那么如何重构generateBlocks函数以使其可测试?
您可以在函数ref上使用.toString()方法,并与期望的字符串结果进行比较。
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