Add very simple unit test

meson.build

@@ -8,3 +8,11 @@ lib = static_library('poly2tri', sources : [
 	'poly2tri/sweep/sweep.cc',
 	'poly2tri/sweep/sweep_context.cc',
 ])
+
+thread_dep = dependency('threads')
+boost_test_dep = dependency('boost', modules : [ 'unit_test_framework' ], required : false)
+if boost_test_dep.found()
+	test('Unit Test', executable('unittest', [
+		'unittest/main.cpp',
+	], dependencies : [boost_test_dep, thread_dep], link_with : lib))
+endif

unittest/main.cpp

@@ -0,0 +1,19 @@
+#define BOOST_TEST_DYN_LINK
+#define BOOST_TEST_MODULE Poly2triTest
+#include <boost/test/unit_test.hpp>
+#include <poly2tri/poly2tri.h>
+#include <iostream>
+
+BOOST_AUTO_TEST_CASE(BasicTest) {
+	std::vector<p2t::Point*> polyline{
+		new p2t::Point(0, 0), new p2t::Point(1, 0), new p2t::Point(1, 1),
+	};
+	p2t::CDT cdt{polyline};
+	cdt.Triangulate();
+	const auto result = cdt.GetTriangles();
+	assert(result.size() == 1);
+	BOOST_CHECK_EQUAL(*result[0]->GetPoint(0), *polyline[0]);
+	BOOST_CHECK_EQUAL(*result[0]->GetPoint(1), *polyline[1]);
+	BOOST_CHECK_EQUAL(*result[0]->GetPoint(2), *polyline[2]);
+	result[0]->DebugPrint();
+}