Adding integration test for the Bulk Tracking API, it FAILS at present! refs #4603

Thanks for the report, we didn't catch this failure as it wasn't properly continuously tested!

tests/PHPUnit/Integration/Core/TrackerTest.php

+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+/**
+ * @group Core
+ */
+class Core_TrackerTest extends DatabaseTestCase
+{
+    /**
+     * Test the Bulk tracking API as documented in: http://developer.piwik.org/api-reference/tracking-api#bulk-tracking
+     *
+     * @throws Exception
+     */
+    public function test_trackingApiWithBulkRequests_viaCurl()
+    {
+        $piwikHost = Test_Piwik_BaseFixture::getRootUrl() . 'piwik.php';
+        $command = 'curl -X POST -d \'{"requests":["?idsite=1&url=http://example.org&action_name=Test bulk log Pageview&rec=1","?idsite=1&url=http://example.net/test.htm&action_name=Another bulk page view&rec=1"],"token_auth":"33dc3f2536d3025974cccb4b4d2d98f4"}\' ' . $piwikHost;
+
+        exec($command, $output, $result);
+        $output = implode("", $output);
+        if ($result !== 0) {
+            throw new Exception("tracking bulk failed: " . implode("\n", $output) . "\n\ncommand used: $command");
+        }
+        $this->assertNotContains('error', $output);
+        $this->assertStringStartsWith('{"status":', $output);
+        $this->assertContains('success', $output);
+    }
+}