mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
3334eafcb1
See "Static configuration properties are now immutable, you must use Config API." in the 3.1 change log for details.
69 lines
3.0 KiB
Markdown
69 lines
3.0 KiB
Markdown
# How To Create a SilverStripe Test
|
|
|
|
A unit test class will test the behaviour of one of your `[api:DataObjects]`. This simple fragment of `[api:SiteTreeTest]`
|
|
provides us the basics of creating unit tests.
|
|
|
|
:::php
|
|
<?php
|
|
class SiteTreeTest extends SapphireTest {
|
|
|
|
// Define the fixture file to use for this test class
|
|
private static $fixture_file = 'SiteTreeTest.yml';
|
|
|
|
/**
|
|
* Test generation of the URLSegment values.
|
|
* - Turns things into lowercase-hyphen-format
|
|
* - Generates from Title by default, unless URLSegment is explicitly set
|
|
* - Resolves duplicates by appending a number
|
|
*/
|
|
public function testURLGeneration() {
|
|
$expectedURLs = array(
|
|
'home' => 'home',
|
|
'staff' => 'my-staff',
|
|
'about' => 'about-us',
|
|
'staffduplicate' => 'my-staff-2',
|
|
'product1' => '1-1-test-product',
|
|
'product2' => 'another-product',
|
|
'product3' => 'another-product-2',
|
|
'product4' => 'another-product-3',
|
|
);
|
|
|
|
foreach($expectedURLs as $fixture => $urlSegment) {
|
|
$obj = $this->objFromFixture('Page', $fixture);
|
|
$this->assertEquals($urlSegment, $obj->URLSegment);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
There are a number of points to note in this code fragment:
|
|
|
|
* Your test is a **subclass of SapphireTest**. Both unit tests and functional tests are a subclass of `[api:SapphireTest]`.
|
|
* **static $fixture_file** is defined. The testing framework will automatically set up a new database for **each** of
|
|
your tests. The initial database content will be sourced from the YML file that you list in $fixture_file. The property can take an array of fixture paths.
|
|
* Each **method that starts with the word "test"** will be executed by the TestRunner. Define as many as you like; the
|
|
database will be rebuilt for each of these.
|
|
* **$this->objFromFixture($className, $identifier)** can be used to select one of the objects named in your fixture
|
|
file. To identify to the object, we provide a class name and an identifier. The identifier is specified in the YML
|
|
file but not saved in the database anywhere. objFromFixture() looks the `[api:DataObject]` up in memory rather than using the
|
|
database. This means that you can use it to test the functions responsible for looking up content in the database.
|
|
|
|
## Assertion commands
|
|
|
|
**$this->assertEquals()** is an example of an assertion function.
|
|
These functions form the basis of our tests - a test
|
|
fails if and only if one or more of the assertions fail.
|
|
See [the PHPUnit manual](http://www.phpunit.de/manual/current/en/api.html#api.assert)
|
|
for a listing of all PHPUnit's built-in assertions.
|
|
|
|
The `[api:SapphireTest]` class comes with additional assertions which are more
|
|
specific to the framework, e.g. `[assertEmailSent](api:SapphireTest->assertEmailSent())`
|
|
which can simulate sending emails through the `Email->send()` API without actually
|
|
using a mail server (see the [testing emails](email-sending)) guide.
|
|
|
|
## Fixtures
|
|
|
|
Often you need to test your functionality with some existing data, so called "fixtures".
|
|
These records are inserted on a fresh test database automatically.
|
|
[Read more about fixtures](fixtures). |