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.cpp

@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * libcamera Camera API tests
+ */
+
+#include <iostream>
+
+#include "camera_test.h"
+
+using namespace libcamera;
+using namespace std;
+
+int CameraTest::init()
+{
+	cm_ = CameraManager::instance();
+
+	if (cm_->start()) {
+		cout << "Failed to start camera manager" << endl;
+		return TestFail;
+	}
+
+	camera_ = cm_->get("VIMC Sensor B");
+	if (!camera_) {
+		cout << "Can not find VIMC camera" << endl;
+		return TestSkip;
+	}
+
+	/* Sanity check that the camera has streams. */
+	if (camera_->streams().empty()) {
+		cout << "Camera has no stream" << endl;
+		return TestFail;
+	}
+
+	return TestPass;
+}
+
+void CameraTest::cleanup()
+{
+	if (camera_) {
+		camera_->release();
+		camera_.reset();
+	}
+
+	cm_->stop();
+};
+
+bool CameraTest::configurationValid(const std::set<Stream *> &streams,
+				    const std::map<Stream *, StreamConfiguration> &conf) const
+{
+	/* Test that the numbers of streams matches that of configuration. */
+	if (streams.size() != conf.size())
+		return false;
+
+	/*
+	 * Test that stream can be found in configuration and that the
+	 * configuration is valid.
+	 */
+	for (Stream *stream : streams) {
+		std::map<Stream *, StreamConfiguration>::const_iterator it =
+			conf.find(stream);
+
+		if (it == conf.end())
+			return false;
+
+		const StreamConfiguration *sconf = &it->second;
+		if (sconf->width == 0 || sconf->height == 0 ||
+		    sconf->pixelFormat == 0 || sconf->bufferCount == 0)
+			return false;
+	}
+
+	return true;
+}

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__ */

test/camera/configuration_default.cpp

@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * libcamera Camera API tests
+ */
+
+#include <iostream>
+
+#include "camera_test.h"
+
+using namespace std;
+
+namespace {
+
+class ConfigurationDefault : public CameraTest
+{
+protected:
+	int run()
+	{
+		std::map<Stream *, StreamConfiguration> conf;
+
+		/*
+		 * Test that asking for default configuration for a valid
+		 * array of streams returns something valid.
+		 */
+		std::set<Stream *> streams = { *camera_->streams().begin() };
+		conf = camera_->streamConfiguration(streams);
+		if (conf.empty()) {
+			cout << "Failed to retrieve configuration for valid streams"
+			     << endl;
+			return TestFail;
+		}
+
+		if (!configurationValid(streams, conf)) {
+			cout << "Default configuration invalid" << endl;
+			return TestFail;
+		}
+
+		/*
+		 * Test that asking for configuration for an empty array of
+		 * streams returns an empty list of configurations.
+		 */
+		std::set<Stream *> streams_empty = {};
+		conf = camera_->streamConfiguration(streams_empty);
+		if (!conf.empty()) {
+			cout << "Failed to retrieve configuration for empty streams"
+			     << endl;
+			return TestFail;
+		}
+
+		/*
+		 * Test that asking for configuration for an array of bad streams
+		 * returns an empty list of configurations.
+		 */
+		Stream *stream_bad = reinterpret_cast<Stream *>(0xdeadbeef);
+		std::set<Stream *> streams_bad = { stream_bad };
+		conf = camera_->streamConfiguration(streams_bad);
+		if (!conf.empty()) {
+			cout << "Failed to retrieve configuration for bad streams"
+			     << endl;
+			return TestFail;
+		}
+
+		return TestPass;
+	}
+};
+
+} /* namespace */
+
+TEST_REGISTER(ConfigurationDefault);

test/camera/meson.build

@@ -0,0 +1,12 @@
+# Tests are listed in order of complexity.
+# They are not alphabetically sorted.
+camera_tests = [
+  [ 'configuration_default',  'configuration_default.cpp' ],
+]
+
+foreach t : camera_tests
+  exe = executable(t[0], [t[1], 'camera_test.cpp'],
+                   link_with : test_libraries,
+                   include_directories : test_includes_internal)
+  test(t[0], exe, suite: 'camera', is_parallel: false)
+endforeach

test/meson.build

@@ -1,5 +1,6 @@
 subdir('libtest')
 
+subdir('camera')
 subdir('media_device')
 subdir('pipeline')
 subdir('v4l2_device')