improve error message (fix #79)

bibtexbrowser-test.php

@@ -35,6 +35,9 @@ define('BIBTEXBROWSER_MAIN','Nothing');
 //require_once('bibtexbrowser.php');
 
 set_error_handler("exception_error_handler");
+if (!is_file('reflectivedoc.php')) {
+  die("to run the bibtexbrowser tests, download this file first:\ncurl -L -o reflectivedoc.php https://www.monperrus.net/martin/reflectivedoc.php.txt\n");
+}
 require('reflectivedoc.php');
 $nsnippet=0;
 foreach(getAllSnippetsInFile('bibtexbrowser.php') as $snippet) {
@@ -68,7 +71,8 @@ class BTBTest extends PHPUnit_Framework_TestCase {
   function test_checkdoc() {
     if(!is_file('gakowiki-syntax.php')) { return; }
     if (!function_exists('gk_wiki2html')) { include('gakowiki-syntax.php'); }
-    create_wiki_parser()->parse(file_get_contents('bibtexbrowser-documentation.wiki'));
+    $result = create_wiki_parser()->parse(file_get_contents('bibtexbrowser-documentation.wiki'));
+    $this->assertEquals(1, strpos($result,"bibtexbrowser is a PHP script that creates publication lists from Bibtex files"));
   }
 
   function createDB() {