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Throwing an error on missing selector in test harness trigger #320

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merged 3 commits into from
Apr 23, 2019

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rorticus
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Type: bug / feature

The following has been addressed in the PR:

Description:

Instead of silently failing, throwing an error when a h.trigger encounters a selector that doesn't return any nodes.

Resolves #318

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@aciccarello aciccarello left a comment

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Looks great! Probably should be considered a breaking change.

}

if (!firstItem) {
throw new Error(`Cannot find node with selector ${selector}`);
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I like this error message. It might be good to make this and the assertion template errors consistent.

throw Error('Node not found');

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I don't disagree, but updating the message there is a bit more complicated. I've made the change though, we'll see how it goes 😄

if (!node) {
throw Error('Node not found');
throw Error(`Cannot find node with selector ${selector}`);
}
if (!isWNode(node) && !isVNode(node)) {
throw Error('Cannot set or get on unknown node');
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Hmm I don’t think we should change this. The findOne is meant to be equivalent to querySelector and not throw. It also doesn’t make sense to throw a setting unknown node here given the function name?

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Hehe, yeah, I wasn't sure about these changes. The other option is i can pass the selector in guard so it can use it in the error message, but thats going to end up looking silly and be a bit of a pain every time you call it. Maybe i should just remove that last commit?

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Ha yeah I agree, maybe for now we just stick with the trigger change and we can raise a separate issue for making error messages more consistent (it might be that we use the same function in the harness and assertion template)

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Test harness should throw on missing selectors
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