adding test

src/Util/Profiler.php

@@ -32,6 +32,16 @@ class Profiler implements ContainerInterface
 	 */
 	private $rendertime;
 
+	/**
+	 * True, if the Profiler should measure the whole rendertime including functions
+	 *
+	 * @return bool
+	 */
+	public function isRendertime()
+	{
+		return $this->rendertime;
+	}
+
 	/**
 	 * @param bool $enabled           True, if the Profiler is enabled
 	 * @param bool $renderTime        True, if the Profiler should measure the whole rendertime including functions
@@ -207,9 +217,11 @@ class Profiler implements ContainerInterface
 			]
 		);
 
+		if ($this->isRendertime()) {
 			$output = $this->getRendertimeString();
 			$logger->info($message . ": " . $output, ['action' => 'profiling']);
 		}
+	}
 
 	/**
 	 * Finds an entry of the container by its identifier and returns it.

tests/src/Util/ProfilerTest.php

@@ -177,5 +177,25 @@ class ProfilerTest extends MockedTest
 		}
 
 		$profiler->saveLog($this->logger, 'test');
+
+		$output = $profiler->getRendertimeString();
+
+		foreach ($data as $perf => $items) {
+			foreach ($items['functions'] as $function) {
+				// assert that the output contains the functions
+				$this->assertRegExp('/' . $function . ': \d+/', $output);
+			}
+		}
+	}
+
+	/**
+	 * Test if no rendertime is set
+	 */
+	public function testNoRenderTime()
+	{
+		$profiler = new Profiler(true, false);
+
+		$this->assertFalse($profiler->isRendertime());
+		self::assertEmpty($profiler->getRendertimeString());
 	}
 }