first import

modules/aggregator/tests/aggregator_test.module

@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * Implements hook_menu().
+ */
+function aggregator_test_menu() {
+  $items['aggregator/test-feed'] = array(
+    'title' => 'Test feed static last modified date',
+    'description' => "A cached test feed with a static last modified date.",
+    'page callback' => 'aggregator_test_feed',
+    'access arguments' => array('access content'),
+    'type' => MENU_CALLBACK,
+  );
+  return $items;
+}
+
+/**
+ * Page callback. Generates a test feed and simulates last-modified and etags.
+ *
+ * @param $use_last_modified
+ *   Set TRUE to send a last modified header.
+ * @param $use_etag
+ *   Set TRUE to send an etag.
+ */
+function aggregator_test_feed($use_last_modified = FALSE, $use_etag = FALSE) {
+  $last_modified = strtotime('Sun, 19 Nov 1978 05:00:00 GMT');
+  $etag = drupal_hash_base64($last_modified);
+
+  $if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) : FALSE;
+  $if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) : FALSE;
+
+  // Send appropriate response. We respond with a 304 not modified on either
+  // etag or on last modified.
+  if ($use_last_modified) {
+    drupal_add_http_header('Last-Modified', gmdate(DATE_RFC1123, $last_modified));
+  }
+  if ($use_etag) {
+    drupal_add_http_header('ETag', $etag);
+  }
+  // Return 304 not modified if either last modified or etag match.
+  if ($last_modified == $if_modified_since || $etag == $if_none_match) {
+    drupal_add_http_header('Status', '304 Not Modified');
+    return;
+  }
+
+  // The following headers force validation of cache:
+  drupal_add_http_header('Expires', 'Sun, 19 Nov 1978 05:00:00 GMT');
+  drupal_add_http_header('Cache-Control', 'must-revalidate');
+  drupal_add_http_header('Content-Type', 'application/rss+xml; charset=utf-8');
+
+  // Read actual feed from file.
+  $file_name = DRUPAL_ROOT . '/' . drupal_get_path('module', 'aggregator') . '/tests/aggregator_test_rss091.xml';
+  $handle = fopen($file_name, 'r');
+  $feed = fread($handle, filesize($file_name));
+  fclose($handle);
+
+  print $feed;
+}