gistfile1.php

class Test_Restrict_Articles extends WP_UnitTestCase {
	
	function test_mr_get_article_stats_for_yahoo_ticker() {

		add_filter( 
			'pre_http_request', 
			$this->get_http_request_overide( 'https://finance.yahoo.com/q?s=spy', 
			file_get_contents( __DIR__ . '/data/yahoo-finance-spy.html' ) 
		), 10, 3 );

		// this is doing a http request internally
		$stats = mr_get_article_stats_for_yahoo_ticker();

		$this->assertEquals( 15, count( $stats ) );
		$this->assertEquals( 6, count( wp_list_filter( $stats, array( 'is_mr' => true ) ) ) );
	}
	
	private function get_http_request_overide( $matched_url, $response_body ) {

		$func = null;

		return function( $return, $request, $url ) use ( $matched_url, $response_body, &$func ) {

			remove_filter( 'pre_http_request', $func );

			if ( $url !== $matched_url ) {
				return $return;
			}

			$response = array(
				'headers'  => array(),
				'body'     => $response_body,
				'response' => 200,
			);

			return $response;
		};

	}
}