$CI =& get_instance(); return null in createAndCallController function in CIPHPUnitTestRequest.php

[biechao]

In CIPHPUnitTestRequest.php there is a function createAndCallController funtion.
When I try to test my controller with code:

class Saml_test extends TestCase
{

	public function test_ut_test()
	{
		$output = $this->request('GET', "saml/ut_test");
		$this->assertContains('1', $output);
	}

}

I got this error message in console:

Saml_test::test_ut_test
RuntimeException: Argument 1 passed to CIPHPUnitTestCase::setCI() must be an instance of CI_Controller, instance of CIPHPUnitTestNullCodeIgniter given, called in xxx

After further debugging, I found this function return null, and it supposes to return an instance of CI.

		// Create controller
		if (CIPHPUnitTest::wiredesignzHmvcInstalled())
		{
			new CI();
		}
		$controller = new $class;
		$CI =& get_instance();
		**// The $CI is null here**
		// Set CodeIgniter instance to TestCase
		$this->testCase->setCI($CI);

[kenjis]

@biechao Read the error message carefully, so you might have any clue.

[kenjis]

@biechao I don't know why the $CI is null.
And the error message says the argument is CIPHPUnitTestNullCodeIgniter, not null.