From cdb2650241195a311a0d7e1bf1500a132a8d9947 Mon Sep 17 00:00:00 2001
From: King_DuckZ <king_duckz@gmx.com>
Date: Fri, 12 Mar 2021 00:11:28 +0100
Subject: [PATCH] Just some test for wrappers of c-style arrays

---
 test/unit/CMakeLists.txt   |  1 +
 test/unit/meson.build      |  1 +
 test/unit/test_c_array.cpp | 92 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 94 insertions(+)
 create mode 100644 test/unit/test_c_array.cpp

diff --git a/test/unit/CMakeLists.txt b/test/unit/CMakeLists.txt
index 3c61516..7946da2 100644
--- a/test/unit/CMakeLists.txt
+++ b/test/unit/CMakeLists.txt
@@ -11,6 +11,7 @@ add_executable(${PROJECT_NAME}
 	test_offset_getters.cpp
 	test_custom_type.cpp
 	test_min_max.cpp
+	test_c_array.cpp
 )
 
 target_link_libraries(${PROJECT_NAME}
diff --git a/test/unit/meson.build b/test/unit/meson.build
index 2bbe4e8..c76b5bd 100644
--- a/test/unit/meson.build
+++ b/test/unit/meson.build
@@ -10,6 +10,7 @@ exec_target = executable(meson.project_name(),
 	'test_offset_getters.cpp',
 	'test_custom_type.cpp',
 	'test_min_max.cpp',
+	'test_c_array.cpp',
 	install: false,
 	dependencies: [gtest_dep, vectorwrapper_dep],
 	cpp_args: compiler_opts,
diff --git a/test/unit/test_c_array.cpp b/test/unit/test_c_array.cpp
new file mode 100644
index 0000000..00dd13c
--- /dev/null
+++ b/test/unit/test_c_array.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2015-2020 Michele "King_DuckZ" Santullo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "vectorwrapper/vectorwrapper.hpp"
+#include <gtest/gtest.h>
+#include <cstddef>
+
+namespace vwr {
+template <> struct VectorWrapperInfo<unsigned short int[3]> {
+	enum { dimensions = 3 };
+	using scalar_type = unsigned short int;
+	using vector_type = unsigned short int[3];
+	using higer_vector_type = unsigned short int[4];
+	enum {
+		offset_x = sizeof(scalar_type) * 0,
+		offset_y = sizeof(scalar_type) * 1,
+		offset_z = sizeof(scalar_type) * 2
+	};
+};
+
+template <> struct VectorWrapperInfo<unsigned short int[4]> {
+	enum { dimensions = 4 };
+	using scalar_type = unsigned short int;
+	using vector_type = unsigned short int[4];
+	using lower_vector_type = unsigned short int[3];
+	enum {
+		offset_x = sizeof(scalar_type) * 0,
+		offset_y = sizeof(scalar_type) * 1,
+		offset_z = sizeof(scalar_type) * 2,
+		offset_w = sizeof(scalar_type) * 3
+	};
+};
+} //namespace vwr
+
+namespace {
+typedef vwr::Vec<unsigned short int[3]> vec3;
+typedef vwr::Vec<unsigned short int[4]> vec4;
+} //unnamed namespace
+
+TEST(vwr, c_array) {
+	constexpr const unsigned short int test_val = 0b1010101010101010;
+	vec4 myvec4(test_val);
+	vec3 myvec3(myvec4.xyz());
+
+	EXPECT_EQ(myvec3, myvec4.xyz());
+	EXPECT_EQ(test_val, myvec3.x());
+	EXPECT_EQ(test_val, myvec3.y());
+	EXPECT_EQ(test_val, myvec3.z());
+
+	for (int z = 0; z < 4; ++z) {
+		const auto val = myvec4.data()[z];
+		EXPECT_EQ(test_val, val);
+	}
+
+	myvec4.data()[1] = 5;
+	{
+		unsigned short int vals[4] { test_val, 5, test_val, test_val };
+		for (int z = 0; z < 4; ++z) {
+			const auto val = myvec4.data()[z];
+			EXPECT_EQ(vals[z], val);
+		}
+	}
+
+	myvec4.w() = 0xFFFFU;
+	{
+		unsigned short int vals[4] { test_val, 5, test_val, 0xFFFFU };
+		for (int z = 0; z < 4; ++z) {
+			const auto val = myvec4.data()[z];
+			EXPECT_EQ(vals[z], val);
+		}
+	}
+
+	myvec3.x() = 1001U;
+	myvec3.y() = 1503U;
+	myvec3.z() = 2007U;
+	EXPECT_EQ(4511U, myvec3.x() + myvec3.y() + myvec3.z());
+
+	EXPECT_NE(myvec3, myvec4.xyz());
+}