REST API Endpoint testing response issue

[rlefever]

PHPUnit 9.6.22
ci-phpunit-test 3.0.4 via composer
php 7.4
Doc Reference

Problem: When I run this test

    /**
     * Testing retrieval of Courses via API call w/o Authorization Header
     * Should return a JSON object with message
     */
    public function test_call_courses_wo_auth_header()
    {
        $output = $this->request('GET', 'api/v1/courses');

        // Tried:
        // ob_start();
        // $this->request('GET', 'api/v1/courses');
        // $output = ob_get_clean();
        // Same result

        // Tried:
        // $output = var_export($this->request('GET', 'api/v1/courses'), TRUE);
        // Same result

        $this->assertResponseCode(400);

        $exp_json_resp = '{
            "status": "errors",
            "code": "400",
            "messages": [
                "Authorization Header Missing"
            ]
        }';
        $this->assertSame($exp_json_resp, $output);

        $arr_response = json_decode($output);

        $this->assertIsArray($arr_response);

        $this->assertArrayHasKey('status', $arr_response);
        $this->assertArrayHasKey('code', $arr_response);
        $this->assertArrayHasKey('messages', $arr_response);

        $this->assertSame('errors', $arr_response['status']);
        $this->assertSame('400', $arr_response['code']);
        $this->assertIsArray($arr_response, $arr_response['messages']);

        $this->assertSame('Authorization Header Missing', $arr_response['messages'][0]);
    }

I get this response and no other tests run
PHPUnit 9.6.22 by Sebastian Bergmann and contributors.

Warning: No code coverage driver available

{
"status": "errors",
"code": "400",
"messages": [
"Authorization Header Missing"
]
}

It is like the response is not going to the variable but directly to stdout. The same thing happens when I include the --stderr switch in the cli call.

$this->request() calls to other controllers seem to be working fine.

I don't know if this is a ci-phpunit-test issue or something I am doing wrong. I don't understand why a request returning a JSON string returns different from returning an HTML page.

Any assistance is appreciated.

[rlefever]

Example

I was able to get the rest of the tests to run by adding

set_is_cli(FALSE);
$this->warningOff();

at the top and reversing it at the bottom of the test

$this->warningOn();
set_is_cli(TRUE);

Still shows an error, but at least the other tests run

1. Api_controller_test::test_call_courses_wo_auth_header
   RuntimeException: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time on line 303 in file /web/sys-3.1.13/libraries/Session/Session.php

/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestCase.php:180
/web/sys-3.1.13/libraries/Session/Session.php:303
/web/sys-3.1.13/libraries/Session/Session.php:103
/web/app-v1/tests/_ci_phpunit_test/replacing/core/Loader.php:1352
/web/app-v1/tests/_ci_phpunit_test/replacing/core/Loader.php:1243
/web/app-v1/tests/_ci_phpunit_test/replacing/core/Loader.php:1098
/web/app-v1/tests/_ci_phpunit_test/replacing/core/Loader.php:1144
/web/app-v1/tests/_ci_phpunit_test/replacing/core/Loader.php:227
/web/app-v1/core/MY_Controller.php:116
/web/app-v1/core/MY_Controller.php:633
/web/app-v1/controllers/api/v1/Courses.php:31
/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestRequest.php:348
/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestRequest.php:297
/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestRequest.php:160
/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestCase.php:155
/web/app-v1/tests/controllers/Api_Controller_test.php:31

Using this

        try{
            $output = $this->request('GET', 'api/v1/courses');
        }catch(CIPHPUnitTestExitException $e){
            $output = ob_get_clean();
        }catch(Exception $e){
            $output = ob_get_clean();
        }

I get this in cli (again other tests ran):
There was 1 error:

1. Api_controller_test::test_call_courses_wo_auth_header
   LogicException: Status code is not set. You must call $this->request() first

/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestRequest.php:403
/web/app-v1/tests/_ci_phpunit_test/CIPHPUnitTestCase.php:311
/web/app-v1/tests/controllers/Api_Controller_test.php:50