[0:00] welcome to another develop and design
[0:02] tutorial in this video we will explore
[0:05] how to create a unit test in laravel
[0:07] using PHP unit first we need to check
[0:10] that we have the PHP unit package
[0:12] installed by opening up the Project's
[0:14] composer. Json file the package name we
[0:17] should see is phpunit phpunit now we
[0:20] know this is installed I am going to
[0:22] open up the customer model class to
[0:24] write a function for our unit test this
[0:27] is just a simple function called full
[0:29] name which returns a string
[0:30] concatenating the customer's first name
[0:32] and last name to create our unit test we
[0:36] need to open our terminal or command
[0:38] prompt then navigate to our laravel
[0:41] project directory Now to create the
[0:44] customer unit test file itself we need
[0:47] to type the command PHP artisan make
[0:50] colon test customer test-- unit then hit
[0:55] enter now the command has run
[0:57] successfully we should now see the file
[1:00] path to our unit test displayed in the
[1:02] terminal just a quick breakdown of the
[1:04] command itself PHP artisan make colon
[1:07] test creates the test file customer test
[1:10] in Pascal case names the test file for
[1:13] the customer class's unit tests only the
[1:15] customer class's unit tests will go in
[1:17] this file-- unit specifies that the
[1:21] tests are unit tests and will place the
[1:23] file under the unit test directory now
[1:26] if we navigate to the test directory in
[1:28] our code editor then into the unit
[1:30] directory we should see our customer
[1:32] test file let's click on it to open it
[1:35] we can tell the test is a PHP unit test
[1:38] as the customer test class extends the
[1:40] test case class from the PHP unit
[1:42] library now to write the test we'll
[1:44] first add a description in the doc block
[1:46] above the test function explaining what
[1:48] it
[1:49] covers let's put Test the full name
[1:52] method of the customer model Returns the
[1:54] correct
[1:56] format it's good to put clear
[1:58] descriptions as it helps other
[2:00] developers understand the tests now
[2:02] let's give the test function a name
[2:04] let's call it Test full name Returns the
[2:06] correct
[2:08] format now let's delete everything that
[2:11] was pre-generated inside the example
[2:13] function then begin writing the test by
[2:16] creating a variable called customer
[2:19] which will be an instance of the
[2:21] customer model
[2:23] class we need to give the customer a
[2:25] first name and last name to test the
[2:28] function I'll assign the first name John
[2:31] and the last name Smith to the customer
[2:34] for unit tests we do not use model
[2:37] Factory calls instead we instantiate the
[2:40] class using the new
[2:42] operator now let's add a call to a
[2:45] method called assert
[2:47] equals this method takes two variables
[2:50] and asserts whether they are equal or
[2:52] not if they are equal then the unit test
[2:55] has passed if they are not equal then it
[2:58] has failed
[3:01] for this method's first parameter we
[3:03] want to put the string value we expect
[3:05] the customer full name method to return
[3:08] which is John
[3:10] Smith the second parameter we want to
[3:12] pass is the full name method call from
[3:14] our customer variable as this should
[3:17] concatenate the customer's first name
[3:19] and last name to equal John
[3:21] Smith now to run the test we want to
[3:24] open up the terminal and ensure we are
[3:26] in our laravel project
[3:28] directory then type the command PHP
[3:31] Artisan test and hit enter Then in the
[3:34] terminal we can see that our unit test
[3:36] has passed successfully the command we
[3:39] just ran on its own runs all the
[3:41] tests if we have lots of tests it could
[3:44] take a while to run them all if we just
[3:46] want to see the outcome of one test file
[3:48] then we can run the command with a
[3:50] filter let's try the filter command in
[3:52] the
[3:54] terminal type PHP Artisan test-- filter
[3:58] equals customer test
[4:00] where customer test is the name of the
[4:02] test then hit enter to run it and there
[4:07] we have the customer test which has run
[4:09] successfully if you have any questions
[4:11] about this then please leave a comment
[4:13] below and I will get back to you as soon
[4:15] as I
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