Test Setup and Teardown
Learn how to initialize and clean up code before and after running tests in TypeScript.
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Before we run a particular test, we may wish to exercise some code beforehand. This may be to initialize a particular variable or to make sure that the dependencies of an object have been set up.
In the same vein, we may wish to execute some code once a particular test has run or even after a full test suite has run. To illustrate this, consider the following class:
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class GlobalCounter {count: number = 0;increment(): void {this.count++;}}
Here, we have a class named GlobalCounter that has a count property and an increment function.
The count property is set to 0 when the class is instantiated, and the ...