test: controls: Add ControlInfoMap test

Add a test to exercise the ControlInfoMap API. This currently tests
at(), count(), find() and end().

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Niklas Söderlund <niklas.soderlund@ragnatech.se>

test/controls/control_info.cpp

@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * control_info.cpp - ControlInfoMap tests
+ */
+
+#include <iostream>
+
+#include <libcamera/camera.h>
+#include <libcamera/camera_manager.h>
+#include <libcamera/control_ids.h>
+#include <libcamera/controls.h>
+
+#include "camera_controls.h"
+
+#include "camera_test.h"
+#include "test.h"
+
+using namespace std;
+using namespace libcamera;
+
+class ControlInfoMapTest : public CameraTest, public Test
+{
+public:
+	ControlInfoMapTest()
+		: CameraTest("VIMC Sensor B")
+	{
+	}
+
+protected:
+	int init() override
+	{
+		return status_;
+	}
+
+	int run() override
+	{
+		const ControlInfoMap &info = camera_->controls();
+
+		/* Test looking up a valid control by ControlId. */
+		if (info.count(&controls::Brightness) != 1) {
+			cerr << "count() on valid control failed" << endl;
+			return TestFail;
+		}
+
+		if (info.find(&controls::Brightness) == info.end()) {
+			cerr << "find() on valid control failed" << endl;
+			return TestFail;
+		}
+
+		info.at(&controls::Brightness);
+
+		/* Test looking up a valid control by numerical ID. */
+		if (info.count(controls::Brightness.id()) != 1) {
+			cerr << "count() on valid ID failed" << endl;
+			return TestFail;
+		}
+
+		if (info.find(controls::Brightness.id()) == info.end()) {
+			cerr << "find() on valid ID failed" << endl;
+			return TestFail;
+		}
+
+		info.at(controls::Brightness.id());
+
+		/* Test looking up an invalid control by numerical ID. */
+		if (info.count(12345) != 0) {
+			cerr << "count() on invalid ID failed" << endl;
+			return TestFail;
+		}
+
+		if (info.find(12345) != info.end()) {
+			cerr << "find() on invalid ID failed" << endl;
+			return TestFail;
+		}
+
+		return TestPass;
+	}
+};
+
+TEST_REGISTER(ControlInfoMapTest)

test/controls/meson.build

@@ -1,4 +1,5 @@
 control_tests = [
+    [ 'control_info',   'control_info.cpp' ],
     [ 'control_list',   'control_list.cpp' ],
     [ 'control_range',  'control_range.cpp' ],
     [ 'control_value',  'control_value.cpp' ],