PayWithAmazon\IpnHandlertest::testConstructor PHP Method

    public function testConstructor()
    {
        try {
            $headers = array();
            $headers = array('ab' => 'abc');
            $body = 'abctest';
            $ipnHandler = new IpnHandler($headers, $body, $this->configParams);
        } catch (\Exception $expected) {
            $this->assertRegExp('/Error with message - header./i', strval($expected));
        }
        try {
            $headers['x-amz-sns-message-type'] = 'Notification';
            $body = 'abctest';
            $ipnHandler = new IpnHandler($headers, $body, $this->configParams);
        } catch (\Exception $expected) {
            $this->assertRegExp('/Error with message - content is not in json format./i', strval($expected));
        }
        try {
            $ConfigParams = array('a' => 'A', 'b' => 'B');
            $ipnHandler = new IpnHandler(array(), null, $ConfigParams);
        } catch (\Exception $expected) {
            $this->assertRegExp('/is either not part of the configuration or has incorrect Key name./i', strval($expected));
        }
    }