1 files changed, 83 insertions, 0 deletions
diff --git a/_test/tests/inc/cache_use.test.php b/_test/tests/inc/cache_use.test.php
new file mode 100644
index 000000000..02fe329de
--- /dev/null
+++ b/_test/tests/inc/cache_use.test.php
@@ -0,0 +1,83 @@
+<?php
+
+/**
+ * Class cache_use_test
+ *
+ * Tests if caching can actually be used
+ */
+class cache_use_test extends DokuWikiTest {
+    /** @var cache_renderer $cache */
+    private $cache;
+
+    function setUp() {
+        global $ID, $conf;
+        parent::setUp();
+
+        $ID = 'cached';
+        $file = wikiFN($ID);
+        $conf['cachetime'] = 0;  // ensure the value is not -1, which disables caching
+
+        saveWikiText($ID, 'Content', 'Created');
+
+        $this->cache = new cache_renderer($ID, $file, 'xhtml');
+        $this->cache->storeCache('Test');
+
+        // set the modification times explicitly (overcome Issue #694)
+        $time = time();
+        touch($file, $time-1);
+        touch($this->cache->cache, $time);
+    }
+
+    function test_use() {
+        $this->assertTrue($this->cache->useCache());
+    }
+
+    /**
+     * In all the following tests the cache should not be usable
+     * as such, they are meaningless if test_use didn't pass.
+     *
+     * @depends test_use
+     */
+    function test_purge() {
+        /* @var Input $INPUT */
+        global $INPUT;
+        $INPUT->set('purge',1);
+
+        $this->assertFalse($this->cache->useCache());
+        $this->assertNotEmpty($this->cache->depends['purge']);
+    }
+
+    /**
+     * @depends test_use
+     */
+    function test_filedependency() {
+        // give the dependent src file the same mtime as the cache
+        touch($this->cache->file, filemtime($this->cache->cache));
+        $this->assertFalse($this->cache->useCache());
+    }
+
+    /**
+     * @depends test_use
+     */
+    function test_age() {
+        // need to age both our source file & the cache
+        $age = 10;
+        $time = time() - $age - 1;  // older than age
+
+        touch($this->cache->file, $time - 1);
+        touch($this->cache->cache, $time);
+
+        $this->assertFalse($this->cache->useCache(array('age' => $age)));
+    }
+
+    /**
+     * @depends test_use
+     */
+    function test_confnocaching() {
+        global $conf;
+        $conf['cachetime'] = -1;   // disables renderer caching
+
+        $this->assertFalse($this->cache->useCache());
+        $this->assertNotEmpty($this->cache->_nocache);
+    }
+}
+\ No newline at end of file