public function testCanAddMultipleCustomVariablesToTracker() { $tracker = new Tracker(123); $variable1 = new CustomVariable(1, 'var1', 'value1'); $variable2 = new CustomVariable(2, 'var2', 'value2'); $tracker->addCustomVariable($variable1); $tracker->addCustomVariable($variable2); $this->assertCount(2, $tracker->getCustomVariables()); }