test: camera: Add read default configuration test

Add a test to verify reading the default configuration from a camera
works.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

test/camera/camera_test.h

@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * camera_test.h - libcamera camera test base class
+ */
+#ifndef __LIBCAMERA_CAMERA_TEST_H__
+#define __LIBCAMERA_CAMERA_TEST_H__
+
+#include <libcamera/libcamera.h>
+
+#include "test.h"
+
+using namespace libcamera;
+
+class CameraTest : public Test
+{
+public:
+	CameraTest()
+		: cm_(nullptr) {}
+
+protected:
+	int init();
+	void cleanup();
+
+	bool configurationValid(const std::set<Stream *> &streams,
+				const std::map<Stream *, StreamConfiguration> &conf) const;
+
+	std::shared_ptr<Camera> camera_;
+
+private:
+	CameraManager *cm_;
+};
+
+#endif /* __LIBCAMERA_CAMERA_TEST_H__ */