--- /dev/null
+<?php
+/**
+ * Cache tests
+ */
+namespace Shaarli\Feed;
+
+// required to access $_SESSION array
+session_start();
+
+require_once 'application/feed/Cache.php';
+
+/**
+ * Unitary tests for cached pages
+ */
+class CacheTest extends \PHPUnit\Framework\TestCase
+{
+ // test cache directory
+ protected static $testCacheDir = 'sandbox/dummycache';
+
+ // dummy cached file names / content
+ protected static $pages = array('a', 'toto', 'd7b59c');
+
+
+ /**
+ * Populate the cache with dummy files
+ */
+ public function setUp()
+ {
+ if (!is_dir(self::$testCacheDir)) {
+ mkdir(self::$testCacheDir);
+ } else {
+ array_map('unlink', glob(self::$testCacheDir . '/*'));
+ }
+
+ foreach (self::$pages as $page) {
+ file_put_contents(self::$testCacheDir . '/' . $page . '.cache', $page);
+ }
+ file_put_contents(self::$testCacheDir . '/intru.der', 'ShouldNotBeThere');
+ }
+
+ /**
+ * Remove dummycache folder after each tests.
+ */
+ public function tearDown()
+ {
+ array_map('unlink', glob(self::$testCacheDir . '/*'));
+ rmdir(self::$testCacheDir);
+ }
+
+ /**
+ * Purge cached pages
+ */
+ public function testPurgeCachedPages()
+ {
+ purgeCachedPages(self::$testCacheDir);
+ foreach (self::$pages as $page) {
+ $this->assertFileNotExists(self::$testCacheDir . '/' . $page . '.cache');
+ }
+
+ $this->assertFileExists(self::$testCacheDir . '/intru.der');
+ }
+
+ /**
+ * Purge cached pages - missing directory
+ */
+ public function testPurgeCachedPagesMissingDir()
+ {
+ $oldlog = ini_get('error_log');
+ ini_set('error_log', '/dev/null');
+ $this->assertEquals(
+ 'Cannot purge sandbox/dummycache_missing: no directory',
+ purgeCachedPages(self::$testCacheDir . '_missing')
+ );
+ ini_set('error_log', $oldlog);
+ }
+
+ /**
+ * Purge cached pages and session cache
+ */
+ public function testInvalidateCaches()
+ {
+ $this->assertArrayNotHasKey('tags', $_SESSION);
+ $_SESSION['tags'] = array('goodbye', 'cruel', 'world');
+
+ invalidateCaches(self::$testCacheDir);
+ foreach (self::$pages as $page) {
+ $this->assertFileNotExists(self::$testCacheDir . '/' . $page . '.cache');
+ }
+
+ $this->assertArrayNotHasKey('tags', $_SESSION);
+ }
+}