Test-driven Development for TYPO3

Test-Driven
Development
for TYPO3

Oliver Klee, 2012-14-08
typo3-coding@oliverklee.de

Unit tests for the
Realty Manager
extension

Verify that your code
does what you expect

Make sure that your
changes won‘t break
anything

Keep
other coders
from breaking your code

Don‘t break anything
even in complex projects

Create asafety net
for refactoring

The phpunit extension
has it all

has it all
phpunit (TYPO3 extension)

has it all
PHPUnit (PEAR package)

has it all

Testrunner
(back-end-
module)

has it all

Testrunner Testrunner
(back-end-
module) (CLI module)

has it all
Testing framework for FE & DB
Testrunner Testrunner
(back-end-
module) (CLI module)

Let‘s get
some terms
straight

Two tests
Test meet in a
bar ...

Two tests
Test meet in a
Assertion bar ...

Two tests
Test meet in a
Assertion bar ...
Test
Test

Two tests
Test meet in a
Assertion bar ...
Test
Test
Test case

Two tests
Test meet in a
Assertion bar ...
Test
Test
Test case
Test case

Two tests
Test meet in a
Assertion bar ...
Test
Test
Test case
Test case
Test suite

The life cycle unit test
of a

of a
new FooTest();

of a
new FooTest();

setUp();

of a
new FooTest();

setUp();

/** @test */
lifeIsGood();

of a
new FooTest();

setUp();

/** @test */
lifeIsGood();

tearDown();

Code test-first

write write
test code

Code test-first

write write
test code

refactor

Use meaningful
unit test names

Use meaningful
unit test names
Name the
behavior. classCanBeInstantiated

Use meaningful
unit test names
Name the

Mention the
method. setTitleSetsTitle

Use meaningful
unit test names
Name the

Mention the

Name the setSizeWithZeroThrowsException
preconditions. hasTitleForEmptyTitleReturnsFalse

Use meaningful
unit test names
Name the

Mention the


Dont‘t use
"works" or
"correctly".

Use meaningful
unit test names
Name the

Mention the


Dont‘t use
"works" or measureFrubbleWorksCorrectly
"correctly".

The testing framework
is created quickly
/**
* @var Tx_Phpunit_Framework
*/
protected $testingFramework = NULL;

public function setUp() {
$this->testingFramework = new Tx_Phpunit_Framework('tx_news2');
}

public function tearDown() {
$this->testingFramework->cleanUp();
unset($this->testingFramework);
}

is created quickly
/**
*/

}
discard the FE,
delete DB records,
delete ﬁles
}

is created quickly
/**
*/

}
discard the FE,
delete DB records,
delete ﬁles
}

CREATE TABLE tx_news2_domain_model_news (
…
is_dummy_record tinyint(1) unsigned DEFAULT '0' NOT NULL,
…

can fake almost everything

$recordUid = $tf->createRecord($tableName, array $recordData = array());


$tf->changeRecord($tableName, $uid, array $recordData);



$tf->deleteRecord($tableName, $uid);




$tf->createRelation($tableName, $uidLocal, $uidForeign, $sorting = 0);





$tf->createRelationAndUpdateCounter($tableName, $uidLocal, $uidForeign, $columnName);






$tf->removeRelation($tableName, $uidLocal, $uidForeign);







$numberOfRecords = $tf->countRecords($tableName, $whereClause = '');








$success = $tf->existsRecord($tableName, $whereClause = '');









$success = $tf->existsExactlyOneRecord($tableName, $whereClause = '');









$success = $tf->existsExactlyOneRecord($tableName, $whereClause = '');

$success = $tf->existsRecordWithUid($tableName, $uid);

$pageUid = $tf->createFrontEndPage($parentId = 0, array $recordData = array());


$pageUid = $tf->createSystemFolder($parentId = 0, array $recordData = array());



$elementUid = $tf->createContentElement($pageId = 0, array $recordData = array());




$tf->createTemplate($pageId, array $recordData = array());





$pageUid = $tf->createFakeFrontEnd($pageUid = 0);






$tf->discardFakeFrontEnd();







$groupUid = $tf->createFrontEndUserGroup(array $recordData = array());








$userUid = $tf->createFrontEndUser($groups = '', array $recordData = array());









$tf->loginFrontEndUser($userId);









$tf->logoutFrontEndUser(); $tf->loginFrontEndUser($userId);










$userUid = $tf->createAndLoginFrontEndUser($groups = '', array $recordData = array());










$userUid = $tf->createAndLoginFrontEndUser($groups = '', array $recordData = array());

$isLoggedIn = $tf->isLoggedIn();

$recordUid = $tf->createBackEndUser(array $recordData = array());

$recordUid = $tf->createBackEndUser(array $recordData = array());

$recordUid = $tf->createBackEndUserGroup(array $recordData = array());

$path = $tf->createDummyFile($fileName = 'test.txt', $content = '');


$path = $tf->createDummyZipArchive($fileName = 'test.zip', array $filesToAdd = array());



$tf->deleteDummyFile($fileName);




$path = $tf->createDummyFolder($folderName);




$path = $tf->createDummyFolder($folderName);

$tf->deleteDummyFolder($folderName);

Use vfsStream for creating
fake ﬁles and folders
public function setUp {
$root = vfsStream::setUp('Stuff');
$this->moreStuff = vfsStream::newDirectory('moreStuff')->at($root);
}

Use vfsStream for creating
fake ﬁles and folders
public function setUp {
$root = vfsStream::setUp('Stuff');
$this->moreStuff = vfsStream::newDirectory('moreStuff')->at($root);
}

/**
* @test
*/
public function checkFileWithPathOfExistingNonEmptyFileReturnsTrue() {
$file = vfsStream::createFile('test.txt')->at($this->moreStuff);
$file->withContent('Hello world!');

$this->assertTrue(
$this->fixture->checkFile(vfsStream::url('Stuff/moreStuff/test.txt'))
);
}

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