--- /dev/null
+<?php
+
+/*
+ * This file is part of the Prophecy.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ * Marcello Duarte <marcello.duarte@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Prophecy\Prediction;
+
+use Prophecy\Call\Call;
+use Prophecy\Prophecy\ObjectProphecy;
+use Prophecy\Prophecy\MethodProphecy;
+
+/**
+ * Prediction interface.
+ * Predictions are logical test blocks, tied to `should...` keyword.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+interface PredictionInterface
+{
+ /**
+ * Tests that double fulfilled prediction.
+ *
+ * @param Call[] $calls
+ * @param ObjectProphecy $object
+ * @param MethodProphecy $method
+ *
+ * @throws object
+ * @return void
+ */
+ public function check(array $calls, ObjectProphecy $object, MethodProphecy $method);
+}