Post by account_disabled on Jan 3, 2024 23:02:59 GMT -5
Read the previous article in this series which explains what this module does. Describing a test suite You can now describe this specific set of tests using the provided function When copying output test results this will group the tests in the file into a section making it easier to see which suites passed and which failed. Mock any modules used by the target file The last thing to do before writing the actual test suite is to mock the external modules used in the file. This will allow you to control the output of these modules and ensure that your tests are not polluted by external code. In this service there are two modules to simulate and . Mock these modules by adding the following Copy the automatic mock detection algorithm used above to mock this module. The algorithm looks for folders and files named in the same directory as the real module. module instead of the export of the real module.
Mock is a little different because the module only exports the default value which is a function. The second argument is a function which returns the object that the photo editing servies module should return when imported. The above code snippet adds a key to the object and sets its value to a static watchable function that returns a value of . In the context of a test suite and used to ensure that the mock is restored to its original state between each individual test. This is important because in some tests you will modify the simulated behavior for that particular test. Note If you are not sure how these simulations work be sure to refer to the previous article in this series that introduced simulations. The mocked versions are now imported whenever these modules are imported in . Test Function This function accepts an array of tag names and creates a new tag for each name. But it will not create the tag if there is an existing tag in the database.
With the same name. The return value of the function is an array of new and existing tags associated with all tag names supplied to the function. Add another one just below the call in the test suite to describe the test suite related to that feature. This is also done to group the output of the tests to easily see which tests related to that particular feature passed. Copy Now it's time to decide what the tests you write should cover. Look at the function and consider what specific behaviors it has. Every desired behavior should be tested. Comments have been added below showing each behavior that should be tested in this function. The comments are numbered to indicate the order in which the tests are written. Once you have prepared the list of scenarios to.
Mock is a little different because the module only exports the default value which is a function. The second argument is a function which returns the object that the photo editing servies module should return when imported. The above code snippet adds a key to the object and sets its value to a static watchable function that returns a value of . In the context of a test suite and used to ensure that the mock is restored to its original state between each individual test. This is important because in some tests you will modify the simulated behavior for that particular test. Note If you are not sure how these simulations work be sure to refer to the previous article in this series that introduced simulations. The mocked versions are now imported whenever these modules are imported in . Test Function This function accepts an array of tag names and creates a new tag for each name. But it will not create the tag if there is an existing tag in the database.
With the same name. The return value of the function is an array of new and existing tags associated with all tag names supplied to the function. Add another one just below the call in the test suite to describe the test suite related to that feature. This is also done to group the output of the tests to easily see which tests related to that particular feature passed. Copy Now it's time to decide what the tests you write should cover. Look at the function and consider what specific behaviors it has. Every desired behavior should be tested. Comments have been added below showing each behavior that should be tested in this function. The comments are numbered to indicate the order in which the tests are written. Once you have prepared the list of scenarios to.