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DOCS Explaining test suite nesting

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Daniel Hensby 2015-03-07 10:32:17 +00:00 committed by Daniel Hensby
parent 28be51cab0
commit f21427d7fa
2 changed files with 29 additions and 11 deletions
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2
dev/SapphireTest.php
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@ -347,7 +347,7 @@ class SapphireTest extends PHPUnit_Framework_TestCase {
Injector::unnest();
Config::unnest();
if($this->extensionsToReapply || $this->extensionsToRemove || $this->extraDataObjects) {
if(!empty($this->extensionsToReapply) || !empty($this->extensionsToRemove) || !empty($this->extraDataObjects)) {
$this->resetDBSchema();
}
}

36
docs/en/02_Developer_Guides/06_Testing/00_Unit_Testing.md
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@ -182,18 +182,10 @@ end of each test.
$page->publish('Stage', 'Live');
}
// reset configuration for the test.
Config::nest();
// set custom configuration for the test.
Config::inst()->update('Foo', 'bar', 'Hello!');
}
public function tearDown() {
// restores the config variables
Config::unnest();
parent::tearDown();
}
public function testMyMethod() {
// ..
}
@ -224,6 +216,32 @@ individual test case.
}
}
### Config and Injector Nesting
A powerful feature of both [`Config`](/developer_guides/configuration/configuration/) and [`Injector`](/developer_guides/extending/injector/) is the ability to "nest" them so that you can make changes that can easily be discarded without having to manage previous values.
The testing suite makes use of this to "sandbox" each of the unit tests as well as each suite to prevent leakage between tests.
If you need to make changes to `Config` (or `Injector) for each test (or the whole suite) you can safely update `Config` (or `Injector`) settings in the `setUp` or `tearDown` functions.
It's important to remember that the `parent::setUp();` functions will need to be called first to ensure the nesting feature works as expected.
:::php
function setUpOnce() {
parent::setUpOnce();
//this will remain for the whole suite and be removed for any other tests
Config::inst()->update('ClassName', 'var_name', 'var_value');
}
function testFeatureDoesAsExpected() {
//this will be reset to 'var_value' at the end of this test function
Config::inst()->update('ClassName', 'var_name', 'new_var_value');
}
function testAnotherFeatureDoesAsExpected() {
Config::inst()->get('ClassName', 'var_name'); // this will be 'var_value'
}
## Generating a Coverage Report
PHPUnit can generate a code coverage report ([docs](http://www.phpunit.de/manual/current/en/code-coverage-analysis.html))