Initial commit cache

test/AbstractTestCase.php

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+<?php
+
+namespace IQParts\CacheTest;
+
+use PHPUnit\Framework\TestCase;
+
+abstract class AbstractTestCase extends TestCase
+{
+    public function getTmpDirectory()
+    {
+        $location = __DIR__ . '/../tmp';
+        if (!file_exists($location)) {
+            if (!mkdir($location)) {
+                throw new \RuntimeException('Could not create directory: ' . $location);
+            }
+            chmod($location, 0777);
+        }
+        return $location;
+    }
+}