keboola / datadir-tests
Tool for functional testing of Keboola Connection components
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Requires
- php: ^7.4|^8.0
- ext-json: *
- keboola/php-temp: ^2.0
- phpunit/phpunit: ^9.5
- symfony/filesystem: ^5.0|^6.0
- symfony/finder: ^5.0|^6.0
- symfony/process: ^5.0|^6.0
Requires (Dev)
- keboola/coding-standard: ^13.0
- php-parallel-lint/php-parallel-lint: ^1.3
- phpstan/phpstan: ^1.4
README
Usage
Require this package in you component
composer require keboola/datadir-tests`
In the tests folder create a directory structure mimicking the directory structure in production:
/path/to/tests
└─test-name
├─expected-code
├─expected-stdout (optional)
├─expected-stderr (optional)
├─expected
│ └─data
│ └─out
│ ├─files
│ └─tables
├─source
│ └─data
│ └─in
│ ├─files
│ └─tables
└─config.json
Note: expected-stdout
and expected-stderr
are compared with real output using assertStringMatchesFormat
method,
so you can use placeholders.
Then create empty /path/to/tests/DatadirTest
that extends Keboola\DatadirTests\DatadirTestCase
:
<?php declare(strict_types=1); namespace MyComponent\Tests; use Keboola\DatadirTests\DatadirTestCase; class DatadirTest extends DatadirTestCase { }
Run it using
vendor/bin/phpunit /path/to/tests/DatadirTest.php`
The script then executes /code/src/run.php
with KBC_DATADIR
set to the test directory. There can be any number of test directories and the script automatically discovers them using DatadirTestsFromDirectoryProvider
. You can supply your own provider that implements DatadirTestsProviderInterface
. It needs to return array of arrays (!) of DatadirTestSpecificationInterface
instances.
When the expected-code
file is present, the return code of execution is checked. The file contains a single number number - the execution code, allowed values are 0
, 1
, 2
.
What is DatadirTestSpecificationInterface
?
DatadirTestSpecificationInterface
contains all the information you need to create and assert a datadir test:
getSourceDatadirDirectory(): ?string
: returns the directory that initializes the test. You should prepareconfig.json
and potentially also/in/files
or/in/tables
contents. That directory is mirrored to the temporary directory that the test is ran in.null
means just barebones directory structure is created and you need to createconfig.json
, etc. in the temporary directory yourself.getExpectedReturnCode(): ?int
: expected exit code,null
means "non-zero"getExpectedStdout(): ?string
: if supplied, whole stdout output is checked against supplied valuegetExpectedStderr(): ?string
: if supplied, whole stderr output is checked against supplied valuegetExpectedOutDirectory(): ?string
: if supplied, the temporary directory'sout
directory is compared with this directory after the component is ran. Any differences result in test failure.
Custom test
Just add a test method and reuse the existing helper methods in AbstractDatadirTestCase
.
public function testInvalidFile(): void { // create specification manually $specification = new DatadirTestSpecification( __DIR__ . '/columns-auto/source/data', 0, null, null, __DIR__ . '/columns-auto/expected/data/out' ); // create temporary directory $tempDatadir = $this->getTempDatadir($specification); // modify temporary directory however you see fit file_put_contents($tempDatadir->getTmpFolder() . '/config.json', '{"parameters": []}'); // run the script $process = $this->runScript($tempDatadir->getTmpFolder()); // assert specification $this->assertMatchesSpecification($specification, $process, $tempDatadir->getTmpFolder()); }
Environment variables
- In
config.json
you can use placeholders for environment variables. - Format is
%env(TYPE:VAR_NAME)%
, eg.%env(int:DB_PORT)%
. - All string values in
config.json
that match specified format are replaced. - It is implemented in
AbstractDatadirTestCase::modifyConfigJsonContent
. - Allowed types are
string
,int
,float
,bool
. - See example in the test.
Functionality adjustments
- To modify temp data dir before execution, you can extend the method
AbstractDatadirTestCase::setUpDatadir
.
Development
Clone this repository and init the workspace with following command:
git clone https://github.com/keboola/datadir-tests
cd datadir-tests
docker-compose run --rm dev /bin/bash
$ composer install
$ composer ci
License
MIT licensed, see LICENSE file.