[Tests] workaround Boost 1.72 unittest issue

With Boost 1.72.0, if the sinusoidal comparison and the sinusoidal
serialization tests are in the same test file, the tests succeed, but
are followed by a "free(): invalid pointer" exception, marking the test
as failed.

This makes no sense, but the workaround is trivial.

tests/CMakeLists.txt

@@ -5,6 +5,7 @@ TARGET_COMPILE_DEFINITIONS(curves_tests PRIVATE -DTEST_DATA_PATH="${CMAKE_CURREN
 SET(${PROJECT_NAME}_TESTS
   test-constant
   test-sinusoidal
+  test-sinusoidal-serialization
   test-minjerk
   )
 

tests/test-sinusoidal-serialization.cpp

+#define BOOST_TEST_MODULE test_sinusoidal
+
+#include "curves/fwd.h"
+#include "curves/sinusoidal.h"
+#include "curves/serialization/curves.hpp"
+#include <boost/test/included/unit_test.hpp>
+
+using namespace curves;
+
+BOOST_AUTO_TEST_SUITE(BOOST_TEST_MODULE)
+
+BOOST_AUTO_TEST_CASE(serialization) {
+  std::string fileName("fileTest_sinusoidal");
+  pointX_t p0(3), amp(3);
+  p0 << -1, 0.5, 2.;
+  amp << 2, -0.8, -1;
+  double T = 1.5;
+  double phi = 0.;
+
+  sinusoidal_t c(p0, amp, T, phi, 0., 20.);
+
+  c.saveAsText<sinusoidal_t>(fileName + ".txt");
+  c.saveAsXML<sinusoidal_t>(fileName + ".xml", "sinusoidal");
+  c.saveAsBinary<sinusoidal_t>(fileName);
+
+  sinusoidal_t c_txt, c_xml, c_binary;
+  c_txt.loadFromText<sinusoidal_t>(fileName + ".txt");
+  c_xml.loadFromXML<sinusoidal_t>(fileName + ".xml", "sinusoidal");
+  c_binary.loadFromBinary<sinusoidal_t>(fileName);
+
+  BOOST_CHECK(c == c_txt);
+  BOOST_CHECK(c == c_xml);
+  BOOST_CHECK(c == c_binary);
+}
+
+BOOST_AUTO_TEST_SUITE_END()

tests/test-sinusoidal.cpp

@@ -238,28 +238,4 @@ BOOST_AUTO_TEST_CASE(comparison) {
   BOOST_CHECK(c1 != cn6);
 }
 
-BOOST_AUTO_TEST_CASE(serialization) {
-  std::string fileName("fileTest_sinusoidal");
-  pointX_t p0(3), amp(3);
-  p0 << -1, 0.5, 2.;
-  amp << 2, -0.8, -1;
-  double T = 1.5;
-  double phi = 0.;
-
-  sinusoidal_t c(p0, amp, T, phi, 0., 20.);
-
-  c.saveAsText<sinusoidal_t>(fileName + ".txt");
-  c.saveAsXML<sinusoidal_t>(fileName + ".xml", "sinusoidal");
-  c.saveAsBinary<sinusoidal_t>(fileName);
-
-  sinusoidal_t c_txt, c_xml, c_binary;
-  c_txt.loadFromText<sinusoidal_t>(fileName + ".txt");
-  c_xml.loadFromXML<sinusoidal_t>(fileName + ".xml", "sinusoidal");
-  c_binary.loadFromBinary<sinusoidal_t>(fileName);
-
-  BOOST_CHECK(c == c_txt);
-  BOOST_CHECK(c == c_xml);
-  BOOST_CHECK(c == c_binary);
-}
-
 BOOST_AUTO_TEST_SUITE_END()