tests for fetch.php of external files

_test/tests/lib/exe/fetch_statuscodes_external.test.php

+<?php
+
+/**
+ * @group internet
+ */
+class fetch_statuscodes_external_test extends DokuWikiTest {
+
+    private $media = 'http://www.google.com/images/srpr/logo3w.png'; //used in media_get_from_url test too
+    private $width = 200;
+    private $height = 0;
+
+    function setUp() {
+
+        header('X-Test: check headers working');
+        $header_check = function_exists('xdebug_get_headers') ? xdebug_get_headers() : headers_list();
+        if (empty($header_check)) {
+            $this->markTestSkipped('headers not returned, perhaps your sapi does not return headers, try xdebug');
+        } else {
+            header_remove('X-Test');
+        }
+
+        parent::setUp();
+
+        global $conf;
+        $conf['fetchsize'] = 500*1024; //500kb
+        $conf['xsendfile'] = 0;
+
+        global $MIME, $EXT, $CACHE, $INPUT;    // variables fetch creates in global scope -- should this be in fetch?
+    }
+
+    function getUri($hash=null) {
+        $w = $this->width ? 'w='.$this->width.'&' : '';
+        $h = $this->height ? 'h='.$this->height.'&' : '';
+        if($hash === null) {
+            $hash = 'hash='.substr(md5(auth_cookiesalt().$this->media), 0, 6).'&';
+        }
+
+        return '/lib/exe/fetch.php?'.$hash.$w.$h.'{%token%}media='.rawurlencode($this->media);
+    }
+
+    function fetchResponse($token, $hash=null){
+        $request = new TestRequest();
+        return $request->get(array(),str_replace('{%token%}',$token,$this->getUri($hash)));
+    }
+
+    /**
+     * modified image request with invalid hash
+     * expect: 412 status code
+     */
+    function test_invalid_hash() {
+        $invalid_hash = 'hash='.substr(md5(auth_cookiesalt().'junk'), 0, 6).'&';
+        $token = 'tok='.media_get_token($this->media, $this->width, $this->height).'&';
+
+        $this->assertEquals(412,$this->fetchResponse($token, $invalid_hash)->getStatusCode());
+
+    }
+
+    /**
+     *  modified image request with valid token
+     *  expect: header with mime-type
+     *  expect: content
+     *  expect: no error response
+     */
+    function test_valid_token(){
+        $valid_token = 'tok='.media_get_token($this->media, $this->width, $this->height).'&';
+
+        $response = $this->fetchResponse($valid_token);
+        $this->assertTrue((bool)$response->getHeader('Content-Type'));
+        $this->assertTrue((bool)($response->getContent()));
+
+        $status_code = $response->getStatusCode();
+        $this->assertTrue(is_null($status_code) || (200 == $status_code));
+    }
+
+    /**
+     *  modified image request with invalid token
+     *  expect: 412 status code
+     */
+    function test_invalid_token(){
+        $invalid_token = 'tok='.media_get_token('junk',200,100).'&';
+        $this->assertEquals(412,$this->fetchResponse($invalid_token)->getStatusCode());
+    }
+
+    /**
+     *  modified image request with no token
+     *  expect: 412 status code
+     */
+    function test_missing_token(){
+        $no_token = '';
+        $this->assertEquals(412,$this->fetchResponse($no_token)->getStatusCode());
+    }
+
+    /**
+     *  native image request which doesn't require a token
+     *  try: with a token & without a token
+     *  expect: (for both) header with mime-type, content matching source image filesize & no error response
+     */
+    function test_no_token_required(){
+        $this->width = $this->height = 0;   // no width & height, means image request at native dimensions
+        $any_token = 'tok='.media_get_token('junk',200,100).'&';
+        $no_token = '';
+        $file = media_get_from_URL($this->media,'png', -1);
+        $bytes = filesize($file);
+
+        foreach(array($any_token, $no_token) as $token) {
+            $response = $this->fetchResponse($token);
+            $this->assertTrue((bool)$response->getHeader('Content-Type'));
+            $this->assertEquals(strlen($response->getContent()), $bytes);
+
+            $status_code = $response->getStatusCode();
+            $this->assertTrue(is_null($status_code) || (200 == $status_code));
+        }
+    }
+
+}
+//Setup VIM: ex: et ts=4 :