test: Add a ColorSpace test

Add a test for the ColorSpace class that exercises the toString() and
fromString() functions.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

2 files changed, 106 insertions, 0 deletions

diff --git a/test/color-space.cpp b/test/color-space.cpp
new file mode 100644
index 00000000..7d45b217
--- /dev/null
+++ b/test/color-space.cpp
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2022, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * libcamera ColorSpace test
+ */
+
+#include <array>
+#include <iostream>
+
+#include <libcamera/color_space.h>
+
+#include "test.h"
+
+using namespace libcamera;
+using namespace std;
+
+class ColorSpaceTest : public Test
+{
+protected:
+	int run()
+	{
+		if (ColorSpace::toString(std::nullopt) != "Unset") {
+			std::cerr << "Conversion from nullopt to string failed" << std::endl;
+			return TestFail;
+		}
+
+		const std::array<std::pair<ColorSpace, std::string>, 10> colorSpaces = { {
+			{ ColorSpace::Raw, "RAW" },
+			{ ColorSpace::Srgb, "sRGB" },
+			{ ColorSpace::Sycc, "sYCC" },
+			{ ColorSpace::Smpte170m, "SMPTE170M" },
+			{ ColorSpace::Rec709, "Rec709" },
+			{ ColorSpace::Rec2020, "Rec2020" },
+			{
+				ColorSpace{
+					ColorSpace::Primaries::Raw,
+					ColorSpace::TransferFunction::Linear,
+					ColorSpace::YcbcrEncoding::None,
+					ColorSpace::Range::Limited
+				},
+				"RAW/Linear/None/Limited"
+			}, {
+				ColorSpace{
+					ColorSpace::Primaries::Smpte170m,
+					ColorSpace::TransferFunction::Srgb,
+					ColorSpace::YcbcrEncoding::Rec601,
+					ColorSpace::Range::Full
+				},
+				"SMPTE170M/sRGB/Rec601/Full"
+			}, {
+				ColorSpace{
+					ColorSpace::Primaries::Rec709,
+					ColorSpace::TransferFunction::Rec709,
+					ColorSpace::YcbcrEncoding::Rec709,
+					ColorSpace::Range::Full
+				},
+				"Rec709/Rec709/Rec709/Full"
+			}, {
+				ColorSpace{
+					ColorSpace::Primaries::Rec2020,
+					ColorSpace::TransferFunction::Linear,
+					ColorSpace::YcbcrEncoding::Rec2020,
+					ColorSpace::Range::Limited
+				},
+				"Rec2020/Linear/Rec2020/Limited"
+			},
+		} };
+
+		for (const auto &[colorSpace, name] : colorSpaces) {
+			if (colorSpace.toString() != name) {
+				std::cerr
+					<< "Conversion from ColorSpace to string failed: "
+					<< "expected " << name
+					<< ", got " << colorSpace.toString()
+					<< std::endl;
+				return TestFail;
+			}
+
+			if (ColorSpace::fromString(name) != colorSpace) {
+				std::cerr
+					<< "Conversion from string "
+					<< name << " to ColorSpace failed"
+					<< std::endl;
+				return TestFail;
+			}
+		}
+
+		if (ColorSpace::fromString("Invalid")) {
+			std::cerr << "Conversion from invalid name string to color space succeeded"
+				  << std::endl;
+			return TestFail;
+		}
+
+		if (ColorSpace::fromString("Rec709/Rec709/Rec710/Limited")) {
+			std::cerr << "Conversion from invalid component string to color space succeeded"
+				  << std::endl;
+			return TestFail;
+		}
+
+		return TestPass;
+	}
+};
+
+TEST_REGISTER(ColorSpaceTest)
diff --git a/test/meson.build b/test/meson.build
index d050bfa1..6cc77841 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -26,6 +26,7 @@ subdir('v4l2_subdevice')
 subdir('v4l2_videodevice')
 
 public_tests = [
+    ['color-space',                     'color-space.cpp'],
     ['geometry',                        'geometry.cpp'],
     ['public-api',                      'public-api.cpp'],
     ['signal',                          'signal.cpp'],