test: libipa: Add Vector class test

Add a unit test to exercize the API of the ipa::Vector class.

The test binary being called 'vector', implicit includes cause the
binary to be picked by '#include <vector>', causing builds to fail. Set
implicit_include_directories to false to avoid this, as done in commit
6cd849125888 ("test: Don't add current build directory to include
path").

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>

2 files changed, 102 insertions, 0 deletions

diff --git a/test/ipa/libipa/meson.build b/test/ipa/libipa/meson.build
index 4d2427db..f9b3c46d 100644
--- a/test/ipa/libipa/meson.build
+++ b/test/ipa/libipa/meson.build
@@ -2,11 +2,13 @@
 
 libipa_test = [
     {'name': 'interpolator', 'sources': ['interpolator.cpp']},
+    {'name': 'vector', 'sources': ['vector.cpp']},
 ]
 
 foreach test : libipa_test
     exe = executable(test['name'], test['sources'],
                      dependencies : [libcamera_private, libipa_dep],
+                     implicit_include_directories : false,
                      link_with : [test_libraries],
                      include_directories : [test_includes_internal,
                                             '../../../src/ipa/libipa/'])
diff --git a/test/ipa/libipa/vector.cpp b/test/ipa/libipa/vector.cpp
new file mode 100644
index 00000000..8e4ec77d
--- /dev/null
+++ b/test/ipa/libipa/vector.cpp
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2024, Ideas on Board Oy
+ *
+ * Vector tests
+ */
+
+#include "../src/ipa/libipa/vector.h"
+
+#include <cmath>
+#include <iostream>
+
+#include "test.h"
+
+using namespace libcamera::ipa;
+
+#define ASSERT_EQ(a, b)							\
+if ((a) != (b)) {							\
+	std::cout << #a " != " #b << " (line " << __LINE__ << ")"	\
+		  << std::endl;						\
+	return TestFail;						\
+}
+
+class VectorTest : public Test
+{
+protected:
+	int run()
+	{
+		Vector<double, 3> v1{ 0.0 };
+
+		ASSERT_EQ(v1[0], 0.0);
+		ASSERT_EQ(v1[1], 0.0);
+		ASSERT_EQ(v1[2], 0.0);
+
+		ASSERT_EQ(v1.length(), 0.0);
+		ASSERT_EQ(v1.length2(), 0.0);
+
+		Vector<double, 3> v2{{ 1.0, 4.0, 8.0 }};
+
+		ASSERT_EQ(v2[0], 1.0);
+		ASSERT_EQ(v2[1], 4.0);
+		ASSERT_EQ(v2[2], 8.0);
+
+		ASSERT_EQ(v2.x(), 1.0);
+		ASSERT_EQ(v2.y(), 4.0);
+		ASSERT_EQ(v2.z(), 8.0);
+
+		ASSERT_EQ(v2.r(), 1.0);
+		ASSERT_EQ(v2.g(), 4.0);
+		ASSERT_EQ(v2.b(), 8.0);
+
+		ASSERT_EQ(v2.length2(), 81.0);
+		ASSERT_EQ(v2.length(), 9.0);
+		ASSERT_EQ(v2.sum(), 13.0);
+
+		Vector<double, 3> v3{ v2 };
+
+		ASSERT_EQ(v2, v3);
+
+		v3 = Vector<double, 3>{{ 4.0, 4.0, 4.0 }};
+
+		ASSERT_EQ(v2 + v3, (Vector<double, 3>{{ 5.0, 8.0, 12.0 }}));
+		ASSERT_EQ(v2 + 4.0, (Vector<double, 3>{{ 5.0, 8.0, 12.0 }}));
+		ASSERT_EQ(v2 - v3, (Vector<double, 3>{{ -3.0, 0.0, 4.0 }}));
+		ASSERT_EQ(v2 - 4.0, (Vector<double, 3>{{ -3.0, 0.0, 4.0 }}));
+		ASSERT_EQ(v2 * v3, (Vector<double, 3>{{ 4.0, 16.0, 32.0 }}));
+		ASSERT_EQ(v2 * 4.0, (Vector<double, 3>{{ 4.0, 16.0, 32.0 }}));
+		ASSERT_EQ(v2 / v3, (Vector<double, 3>{{ 0.25, 1.0, 2.0 }}));
+		ASSERT_EQ(v2 / 4.0, (Vector<double, 3>{{ 0.25, 1.0, 2.0 }}));
+
+		ASSERT_EQ(v2.min(v3), (Vector<double, 3>{{ 1.0, 4.0, 4.0 }}));
+		ASSERT_EQ(v2.min(4.0), (Vector<double, 3>{{ 1.0, 4.0, 4.0 }}));
+		ASSERT_EQ(v2.max(v3), (Vector<double, 3>{{ 4.0, 4.0, 8.0 }}));
+		ASSERT_EQ(v2.max(4.0), (Vector<double, 3>{{ 4.0, 4.0, 8.0 }}));
+
+		ASSERT_EQ(v2.dot(v3), 52.0);
+
+		v2 += v3;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 5.0, 8.0, 12.0 }}));
+		v2 -= v3;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 1.0, 4.0, 8.0 }}));
+		v2 *= v3;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 4.0, 16.0, 32.0 }}));
+		v2 /= v3;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 1.0, 4.0, 8.0 }}));
+
+		v2 += 4.0;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 5.0, 8.0, 12.0 }}));
+		v2 -= 4.0;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 1.0, 4.0, 8.0 }}));
+		v2 *= 4.0;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 4.0, 16.0, 32.0 }}));
+		v2 /= 4.0;
+		ASSERT_EQ(v2, (Vector<double, 3>{{ 1.0, 4.0, 8.0 }}));
+
+		return TestPass;
+	}
+};
+
+TEST_REGISTER(VectorTest)