From f50a7939715840083645b669b882b0ea8343bc6d Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 14 Feb 2021 13:20:17 +0000
Subject: Add test-maths

---
 test/Jamfile.jam    |  1 +
 test/test-maths.cpp | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 test/test-maths.cpp

diff --git a/test/Jamfile.jam b/test/Jamfile.jam
index f5d56eb..c6e6d5e 100644
--- a/test/Jamfile.jam
+++ b/test/Jamfile.jam
@@ -15,3 +15,4 @@ project : requirements
 	;
 
 run test-collection.cpp ;
+run test-maths.cpp ;
diff --git a/test/test-maths.cpp b/test/test-maths.cpp
new file mode 100644
index 0000000..aed51d0
--- /dev/null
+++ b/test/test-maths.cpp
@@ -0,0 +1,51 @@
+#define BOOST_TEST_MODULE test_maths
+
+#include <boost/test/data/test_case.hpp>
+#include <boost/test/unit_test.hpp>
+#include <stream_support.hpp>
+
+#include <maths.h>
+constexpr auto quarter_pi = pi / 4.F;
+
+using vecter_to_angle = std::tuple<glm::vec3, float>;
+BOOST_DATA_TEST_CASE(test_flat_angle,
+		boost::unit_test::data::make<vecter_to_angle>(
+				{{north, 0}, {south, pi}, {west, half_pi}, {east, -half_pi}, {north + east, -quarter_pi},
+						{south + east, quarter_pi * -3}, {north + west, quarter_pi}, {south + west, quarter_pi * 3}}),
+		v, a)
+{
+	BOOST_CHECK_CLOSE(flat_angle(v), a, 1.F);
+}
+
+using normalize_angle = std::tuple<float, float>;
+BOOST_DATA_TEST_CASE(test_angle_normalize,
+		boost::unit_test::data::make<normalize_angle>({
+				{0, 0},
+				{two_pi, 0},
+				{-two_pi, 0},
+				{half_pi, half_pi},
+				{-half_pi, -half_pi},
+				{half_pi * 3, -half_pi},
+				{-half_pi * 3, half_pi},
+		}),
+		in, exp)
+{
+	BOOST_CHECK_CLOSE(normalize(in), exp, 1);
+}
+
+using pos3_to_arc = std::tuple<glm::vec3, glm::vec3, glm::vec3, Arc>;
+BOOST_DATA_TEST_CASE(test_create_arc,
+		boost::unit_test::data::make<pos3_to_arc>({
+				{{0, 0, 0}, north, east, {0, half_pi * 3}},
+				{{0, 0, 0}, west, east, {half_pi, half_pi * 3}},
+				{{0, 0, 0}, south, east, {pi, half_pi * 3}},
+				{{0, 0, 0}, east, north, {-half_pi, 0}},
+				{{0, 0, 0}, south, north, {pi, two_pi}},
+		}),
+		c, s, e, a)
+{
+	const Arc arc {c, s, e};
+	BOOST_REQUIRE_LT(arc.first, arc.second);
+	BOOST_CHECK_CLOSE(arc.first, a.first, 1.F);
+	BOOST_CHECK_CLOSE(arc.second, a.second, 1.F);
+}
-- 
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