Improved isCurrentRevision(), tests included

_test/tests/inc/changelog_getrelativerevision.test.php

@@ -270,4 +270,39 @@ class changelog_getrelativerevision_test extends DokuWikiTest {
         $revfound = $pagelog->getRelativeRevision($rev, $dir, $media = false);
         $this->assertEquals($revexpected, $revfound);
     }
+
+    function test_iscurrentpagerevision() {
+        $rev = 1385051947;
+        $currentexpected = true;
+
+        //set a known timestamp
+        touch(wikiFN($this->pageid), $rev);
+
+        $pagelog = new PageRevisionLog($this->pageid, $chunk_size = 8192);
+
+        $current = $pagelog->isCurrentRevision($rev, $media = false);
+        $this->assertEquals($currentexpected, $current);
+    }
+
+    function test_isnotcurrentpagerevision() {
+        $rev = 1385051947;
+        $not_current_rev = $rev - 1;
+        $currentexpected = false;
+
+        //set a known timestamp
+        touch(wikiFN($this->pageid), $rev);
+
+        $pagelog = new PageRevisionLog($this->pageid, $chunk_size = 8192);
+        $current = $pagelog->isCurrentRevision($not_current_rev, $media = false);
+        $this->assertEquals($currentexpected, $current);
+    }
+
+    function test_notexistingcurrentpage() {
+        $rev = 1385051947;
+        $currentexpected = false;
+
+        $pagelog = new PageRevisionLog('nonexistingpage', $chunk_size = 8192);
+        $current = $pagelog->isCurrentRevision($rev, $media = false);
+        $this->assertEquals($currentexpected, $current);
+    }
 }
\ No newline at end of file

inc/changelog.php

@@ -760,11 +760,12 @@ class PageRevisionLog {
     /**
      * Check whether given revision is the current page
      *
-     * @param int $rev timestamp of current page
+     * @param int  $rev   timestamp of current page
+     * @param bool $media look for media?
      * @return bool true if $rev is current revision, otherwise false
      */
-    public function isCurrentRevision($rev){
-        return isset($INFO['meta']['last_change']) && $rev == $INFO['meta']['last_change']['date'];
+    public function isCurrentRevision($rev, $media = false) {
+        return $rev == @filemtime($media ? mediaFN($this->id) : wikiFN($this->id));
     }
 }