随笔分类 - Unit Testing
摘要：Often, we end up creating multiple unit tests for the same unit of code to make sure it behaves as expected with varied input. This is a good practice
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摘要：We want to make sure that when we ship new code, our users can use the application. The best way we've found to do that is to write automated tests th
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摘要：With the right process in place, snapshot tests can be a great way to detect unintended changes in any part of your application that can be serialized
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摘要：Mocha uses a default timeout of 2000 ms. However, if for some reason that does not work for your use case, you can increase the timeout for a particul
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摘要：In this lesson, you will learn how to implement pytest fixtures. Many unit tests have the same resource requirements. For example, an instantiated obj
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摘要：In this lesson, I use Enzyme and Jest's Snapshot functionality to write an integration test for a component called CounterConsumer that consumes the R
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摘要：In this lesson, I use Enzyme and Jest to unit test a Counter Render Prop component. Writing integration tests are perfect for components that consume
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摘要：Every Angular CLI generated project comes already with Karmapreinstalled as well a couple of executable Jasmine specs. The default test reporter is "p
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摘要：In a proper unit test we want to isolate external dependencies as much as possible to guarantee a reliable test outcome. Http calls represent such ext
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摘要：In this lesson you will create a new project with a virtual environment and write your first unit test with pytest. In doing so, you will learn: insta
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摘要：Install: Basic example: Advanced example: Component:
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摘要：Most of time, we get used to use class name as a selector in the test. But one problem for this is classname is used for styling, when we also use it
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摘要：In certain situations, you care more about the final state of the redux store than you do about the particular stream of events coming out of an epic.
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摘要：Often in unit tests we are focussing on the logic involved in crafting a network request, & how we respond to the result. The external service is unli
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摘要：Epics can be unit-tested just like any other function in your application - they have a very specific set of inputs (the action$ stream) and the outpu
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摘要：The way to test router componet needs a little bit setup, first we need to create a "router-stubs.ts". This file is a helper file. The component we wa
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摘要：Both what "TestBed.get" & "injector" trying to do is get service for the test component. But there is some diffenece which determined when use which.
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摘要：When you testing Component rendering, you often needs to call: For example: You can also set auto change detection: Add to providers: Tests wit auto c
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摘要：When using Ngrx, we need to know how to test the component which has Router injected. Component: One thing we can test just for component wihtout temp
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摘要：Here we want to test a toggle button component, when the button was click, state should change, style should change also. Toggle component: Test:
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