This may be the empty string if the browser or device doesn't know the keyboard's locale. Returns a string representing a locale string indicating the locale the keyboard is configured for. Returns a string representing the key value of the key represented by the event. There are two ways to trigger events in unit tests. The event.which property has been deprecated. The keypress event type has been deprecated. We should use the keydown event type as much as possible as it satisfies most of the use-cases. We’ll also learn about a misconception that I see a lot when I look at developer codes. There are primarily three key events, keydown, keypress, and keyup. Returns a boolean value that is true if the event is fired between after compositionstart and before compositionend. In this article, I will walk you through the process of triggering events when writing unit tests for Angular components. Returns a boolean value that is true if the Ctrl key was active when the key event was generated. You need to understand when you can capture the keyEvents. If you want to display the correct keystrokes to the user, you can use Keyboard.getLayoutMap(). Warning: This ignores the user's keyboard layout, so that if the user presses the key at the "Y" position in a QWERTY keyboard layout (near the middle of the row above the home row), this will always return "KeyY", even if the user has a QWERTZ keyboard (which would mean the user expects a "Z" and all the other properties would indicate a "Z") or a Dvorak keyboard layout (where the user would expect an "F"). The Angular docs state: The test assumes (correctly in this case) that the runtime event handlerthe component's click() methoddoesn't care about the event object. It will delay new keystrokes but drop previous pending delayed keystrokes if a new one arrives from the search input. Looks like I have to include an object with a target when raising the event. do not produce a character, therefore they have no ‘keypress’ event attached to them. To mitigate this, a directive can be created to enable us to emit a value from the search input only after a particular time span has passed without another keystroke from the user. Modifier keys such as ‘Shift’, ‘CapsLock’, ‘Ctrl’ etc. These include keys such as the alphabetic, numeric, and punctuation keys. or if you are using yarn as package manager: yarn add jest jest-preset-angular types/jest -dev. npm install jest jest-preset-angular types/jest -save-dev.
0 Comments
Leave a Reply. |