void FramesTest::TestWrench2(Wrench& w) { // Wrench Wrench w2; CPPUNIT_ASSERT_EQUAL(2*w-w,w); CPPUNIT_ASSERT_EQUAL(w*2-w,w); CPPUNIT_ASSERT_EQUAL(w+w+w-2*w,w); w2=w; CPPUNIT_ASSERT_EQUAL(w,w2); w2+=w; CPPUNIT_ASSERT_EQUAL(2*w,w2); w2-=w; CPPUNIT_ASSERT_EQUAL(w,w2); w.ReverseSign(); CPPUNIT_ASSERT_EQUAL(w,-w2); }