1 files changed, 40 insertions, 0 deletions
diff --git a/plugins/Minify/extlib/minify/min_unit_tests/HTTP_ConditionalGet/3.php b/plugins/Minify/extlib/minify/min_unit_tests/HTTP_ConditionalGet/3.php
new file mode 100644
index 000000000..8f5482ba8
--- /dev/null
+++ b/plugins/Minify/extlib/minify/min_unit_tests/HTTP_ConditionalGet/3.php
@@ -0,0 +1,40 @@
+<?php
+
+set_include_path(get_include_path() . PATH_SEPARATOR . realpath(dirname(__FILE__) . '/../../min/lib'));
+require 'HTTP/ConditionalGet.php';
+
+// generate content first (not ideal)
+// emulate regularly updating document
+$every = 20;
+$lastModified = round(time()/$every)*$every - $every;
+$title = 'Last-Modified is unknown : use hash of content for ETag';
+$explain = '
+<p>When Last-Modified is unknown, you can still use ETags, but you need a short
+string that is unique for that content. In the worst case, you have to generate
+all the content first, <em>then</em> instantiate HTTP_ConditionalGet, setting
+the array key <code>contentHash</code> to the output of a hash function of the
+content. Since we have the full content, we might as well also use
+<code>setContentLength(strlen($content))</code> in the case where we need to
+send it.</p>
+<p>This script emulates a document that changes every ' .$every. ' seconds.
+<br>This is version: ' . date('r', $lastModified) . '</p>
+';
+require '_include.php';
+$content = get_content(array(
+    'title' => $title
+    ,'explain' => $explain
+));
+
+$cg = new HTTP_ConditionalGet(array(
+    'contentHash' => substr(md5($content), 7)
+));
+if ($cg->cacheIsValid) {
+    $cg->sendHeaders();
+    // we're done
+    exit();
+}
+$cg->setContentLength(strlen($content));
+$cg->sendHeaders();
+
+send_slowly($content);
+