Encountering timing problems with my protractor tests. Occasionally, test cases fail because of network or performance-related issues. I managed to resolve these issues using browser.sleep(), but recently discovered browser.wait().
What sets them apart and which one is more effective in addressing network or performance issues?
Dealing with timing issues can be a tricky situation, as it may be tempting to simply implement a "quick" browser.sleep() and move on.
However, this approach is not foolproof and may eventually fail. There is no one-size-fits-all rule for setting a sleep timeout, which means that at some point due to network, performance, or other factors, it could take longer for a page to load or an element to become visible. In fact, most of the time, you may end up waiting longer than necessary.
Instead, using browser.wait() offers a different solution. By providing an Expected Condition function for Protractor/WebDriverJS to execute, you can wait for the function to evaluate to true. Protractor will continuously run the function until the result evaluates to true or a set timeout is reached.
While there are several built-in Expected Conditions available, you also have the flexibility to create and use a custom one (example found here).
For more information, visit: http://www.protractortest.org/#/api?view=webdriver.WebDriver.prototype.sleep
browser.delay()
Sets up a command to let the driver sleep for the designated duration.
browser.hold()
Adds a command to wait until a certain condition is met or promise is fulfilled.
This action pauses WebDriver's control flow, not the JavaScript runtime. It simply postpones the execution of future webdriver commands (e.g. it instructs Protractor to hold off on sending subsequent commands to the selenium server), and only if the webdriver control flow is activated.
For more information, visit the documentation here: http://www.protractortest.org/#/api
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