diff --git a/Test/Export/AbstractAggregatorTest.php b/Test/Export/AbstractAggregatorTest.php
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+
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see .
+ */
+namespace Chill\MainBundle\Test\Export;
+
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Doctrine\ORM\QueryBuilder;
+use Doctrine\ORM\AbstractQuery;
+
+/**
+ * Helper which creates a set of test for aggregators.
+ *
+ * @author Julien Fastré
+ */
+abstract class AbstractAggregatorTest extends KernelTestCase
+{
+ /**
+ * Create an aggregator instance which will be used in tests.
+ *
+ * This method is always used after an eventuel `setUp` method.
+ *
+ * @return \Chill\MainBundle\Export\AggregatorInterface
+ */
+ abstract public function getAggregator();
+
+ /**
+ * Create possible combinaison of data (produced by the form).
+ *
+ * This data will be used to generate data providers using this data.
+ *
+ * This method is executed before the `setUp` method.
+ *
+ * @return array an array of data. Example : `array( array(), array('fields' => array(1,2,3), ...)` where an empty array and `array(1,2,3)` are possible values
+ */
+ public abstract function getFormData();
+
+ /**
+ * get an array of query builders that the aggregator will use.
+ *
+ * Those query builders will be used to test aggregator behaviour on this
+ * query builder.
+ *
+ * This method is executed before the `setUp` method.
+ *
+ * @return \Doctrine\DBAL\Query\QueryBuilder[]
+ */
+ public abstract function getQueryBuilders();
+
+ /**
+ * prepare data for `testGetQueryKeys`
+ */
+ public function dataProviderGetQueryKeys()
+ {
+ foreach ($this->getFormData() as $data) {
+ yield array($data);
+ }
+ }
+
+ /**
+ * prepare date for method `testGetResultsAndLabels`
+ */
+ public function dataProviderGetResultsAndLabels()
+ {
+ foreach ($this->getQueryBuilders() as $qb) {
+ foreach ($this->getFormData() as $data) {
+ yield array($qb, $data);
+ }
+ }
+ }
+
+ /**
+ * provide data for `testAlterQuery`
+ */
+ public function dataProviderAlterQuery()
+ {
+ foreach ($this->getQueryBuilders() as $qb) {
+ foreach ($this->getFormData() as $data) {
+ yield array($qb, $data);
+ }
+ }
+ }
+
+ /**
+ * Test the `applyOn` method.
+ */
+ public function testApplyOn()
+ {
+ $filter = $this->getAggregator();
+
+ $this->assertInternalType('string', $filter->applyOn(),
+ "test that the internal type of \"applyOn\" is a string");
+ $this->assertNotEmpty($filter->applyOn(),
+ "test that the \"applyOn\" method return a non-empty string");
+ }
+
+ /**
+ * test the `getTitle` method
+ */
+ public function testGetTitle()
+ {
+ $title = $this->getAggregator()->getTitle();
+
+ $this->assertInternalType('string', $title);
+ $this->assertNotEmpty($title,
+ "test that the title is not empty");
+ }
+
+ /**
+ * Test that the query keys are strings
+ *
+ * @param array $data
+ * @dataProvider dataProviderGetQueryKeys
+ */
+ public function testGetQueryKeys(array $data)
+ {
+ $queryKeys = $this->getAggregator()->getQueryKeys($data);
+
+ $this->assertContainsOnly("string", $queryKeys,
+ "test that the query keys returned by `getQueryKeys` are only strings");
+ $this->assertGreaterThanOrEqual(1, count($queryKeys),
+ "test that there are at least one query key returned");
+ }
+
+ /**
+ *
+ * Test that
+ *
+ * - the results have a correct form (are arrays or traversable)
+ * - each key in a row are present in getQueryKeys ;
+ * - each returned object of the `getLabels` method is callable
+ * - each result can be converted to string using this callable
+ * - each of this callable can provide a string for '_header'
+ *
+ * @param QueryBuilder $qb
+ * @param array $data
+ *
+ * @dataProvider dataProviderGetResultsAndLabels
+ */
+ public function testGetResultsAndLabels(QueryBuilder $qb, array $data)
+ {
+ // it is more convenient to group the `getResult` and `getLabels` test
+ // due to the fact that testing both methods use the same tools.
+
+ // limit the result for the query for performance reason
+ $qb->setMaxResults(1);
+
+ $queryKeys = $this->getAggregator()->getQueryKeys($data);
+ $this->getAggregator()->alterQuery($qb, $data);
+
+ $results = $qb->getQuery()->getResult(AbstractQuery::HYDRATE_ARRAY);
+
+ if (count($results) === 0) {
+ $this->markTestIncomplete("The result is empty. We cannot process tests "
+ . "on results");
+ }
+
+ // testing the result
+ $result = $results[0];
+
+ $this->assertTrue( $result instanceof \Traversable || is_array($result),
+ "test that each row in the result is traversable or an array");
+
+ foreach ($queryKeys as $key) {
+ $this->assertContains($key, array_keys($result),
+ "test that each key is present in `getQueryKeys`");
+
+ $closure = $this->getAggregator()->getLabels($key, array($result[$key]), $data);
+
+ $this->assertTrue(is_callable($closure, false),
+ "test that the `getLabels` for key is a callable");
+ $this->assertTrue(is_string((string) call_user_func($closure, $result[$key])),
+ sprintf("test that the callable return by `getLabels` for key %s "
+ . "is a string or an be converted to a string", $key));
+
+ $this->assertTrue(
+ // conditions
+ is_string((string) call_user_func($closure, '_header'))
+ && !empty(call_user_func($closure, '_header'))
+ && call_user_func($closure, '_header') !== '_header',
+ // message
+ sprintf("Test that the callable return by `getLabels` for key %s "
+ . "can provide an header", $key)
+ );
+ }
+ }
+
+ /**
+ * test the alteration of query by the filter
+ *
+ * @dataProvider dataProviderAlterQuery
+ * @param QueryBuilder $query
+ * @param type $data
+ */
+ public function testAlterQuery(QueryBuilder $query, $data)
+ {
+ // retains informations about query
+ $nbOfFrom = count($query->getDQLPart('from'));
+ $nbOfWhere = count($query->getDQLPart('where'));
+ $nbOfSelect = count($query->getDQLPart('select'));
+
+ $this->getAggregator()->alterQuery($query, $data);
+
+ $this->assertGreaterThanOrEqual($nbOfFrom, count($query->getDQLPart('from')),
+ "Test that there are equal or more 'from' clause after that the filter has
+ altered the query");
+ $this->assertGreaterThanOrEqual($nbOfWhere, count($query->getDQLPart('where')),
+ "Test that there are equal or more 'where' clause after that the filter has"
+ . "altered the query");
+ $this->assertGreaterThanOrEqual($nbOfSelect, count($query->getDQLPart('select')),
+ "Test that the filter has no altered the 'select' part of the query");
+
+ }
+}