public function testExclusivelyBoolean()
{
$operands = new OperandsCollection();
$this->assertFalse($operands->exclusivelyBoolean());
$operands[] = new QtiBoolean(true);
$this->assertTrue($operands->exclusivelyBoolean());
$operands[] = new QtiBoolean(false);
$this->assertTrue($operands->exclusivelyBoolean());
$container = new MultipleContainer(BaseType::BOOLEAN);
$operands[] = $container;
$this->assertFalse($operands->exclusivelyBoolean());
$container[] = new QtiBoolean(false);
$this->assertTrue($operands->exclusivelyBoolean());
$operands = new OperandsCollection();
$operands[] = new QtiBoolean(true);
$this->assertTrue($operands->exclusivelyBoolean());
$operands[] = null;
$this->assertFalse($operands->exclusivelyBoolean());
$operands = new OperandsCollection();
$operands[] = new OrderedContainer(BaseType::BOOLEAN, array(new QtiBoolean(true), new QtiBoolean(false), new QtiBoolean(true)));
$this->assertTrue($operands->exclusivelyBoolean());
$operands[] = new MultipleContainer(BaseType::BOOLEAN);
$this->assertFalse($operands->exclusivelyBoolean());
$operands = new OperandsCollection();
$operands[] = new QtiBoolean(true);
$operands[] = new QtiBoolean(false);
$this->assertTrue($operands->exclusivelyBoolean());
$operands[] = new RecordContainer(array('b1' => new QtiBoolean(true), 'b2' => new QtiBoolean(false)));
$operands = new OperandsCollection();
$operands[] = new QtiBoolean(true);
$operands[] = new MultipleContainer(BaseType::BOOLEAN, array(new QtiBoolean(true)));
$this->assertTrue($operands->exclusivelyBoolean());
$operands[] = new RecordContainer();
$this->assertFalse($operands->exclusivelyBoolean());
}
