tests: write a simple Export test for new indicators + fix depreciation with BrowserKit client

cfr: https://symfony.com/doc/4.4/components/browser_kit.html#creating-a-client

src/Bundle/ChillPersonBundle/Tests/Export/Export/CountAccompanyingCourseTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Export\Export;
+
+use Chill\MainBundle\Test\Export\AbstractExportTest;
+use Chill\PersonBundle\Export\Declarations;
+use Chill\PersonBundle\Export\Export\CountAccompanyingCourse;
+
+final class CountAccompanyingCourseTest extends AbstractExportTest
+{
+    private CountAccompanyingCourse $export;
+
+    protected function setUp(): void
+    {
+        self::bootKernel();
+
+        $this->export = self::$container->get('chill.person.export.count_accompanyingcourse');
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getExport()
+    {
+        return $this->export;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getFormData(): array
+    {
+        return [[]];
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getModifiersCombination()
+    {
+        return [[Declarations::ACP_TYPE]];
+    }
+}

src/Bundle/ChillPersonBundle/Tests/Export/Export/StatAccompanyingCourseDurationTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Export\Export;
+
+use Chill\MainBundle\Test\Export\AbstractExportTest;
+use Chill\PersonBundle\Export\Declarations;
+use Chill\PersonBundle\Export\Export\StatAccompanyingCourseDuration;
+
+final class StatAccompanyingCourseDurationTest extends AbstractExportTest
+{
+    private StatAccompanyingCourseDuration $export;
+
+    protected function setUp(): void
+    {
+        self::bootKernel();
+
+        $this->export = self::$container->get('chill.person.export.avg_accompanyingcourse_duration');
+    }
+
+    public function getExport()
+    {
+        return $this->export;
+    }
+
+    public function getFormData(): array
+    {
+        return [
+            ['closingdate' => \DateTime::createFromFormat('Y-m-d', '2022-06-30')],
+        ];
+    }
+
+    public function getModifiersCombination()
+    {
+        return [[Declarations::ACP_TYPE]];
+    }
+}