Unit test vector

class UnitTestVector{


    V2<int> v2i{1, 2};
    V2<float> v2f{4.0, 5.0};
    V2d magtest{6.0, 8.0};
    V3d normtest{3., 2., 1.};

    // V2<double> v2d; --- not defined yet

    #define utv_test(title, cond) do{ \
        cout << "--- " << title << " ---" << endl; \
        cout << "Test: " << #cond << endl; \
        bool test_passed = true; \
        try{ \
            if(!(cond)) throw "Test: failed"; \
        } catch(const char* e){ \
            cout << e << endl; \
            test_passed = false; \
        } \
        if (test_passed) cout << "Test: passed" << endl; \
        }while(0);

public:
    UnitTestVector(){

        utv_test("Test operatror[] integer vector", v2i[0] == 1);
        utv_test("Test y() integer vetor", v2i.y() == 2);
        utv_test("Test operator[] float vector", v2f[0] == 4.0);
        utv_test("Test y() float vector", v2f.y() == 5.0);
        // https://www.mathsisfun.com/algebra/vectors.html
        utv_test("Test magnitude", magtest.length() == 10.0);

        //http://www.fundza.com/vectors/normalize/
        normtest.normalize();
        V3d expnorm{0.802, 0.267, 0.534};
        utv_test("Test normalization", normtest.cmp_close(expnorm));

    }
};


/*** OUTPUT ***

--- Test operatror[] integer vector ---
Test: v2i[0] == 1
Test: passed
--- Test y() integer vetor ---
Test: v2i.y() == 2
Test: passed
--- Test operator[] float vector ---
Test: v2f[0] == 4.0
Test: passed
--- Test y() float vector ---
Test: v2f.y() == 5.0
Test: passed
--- Test magnitude ---
Test: magtest.length() == 10.0
Test: passed
--- Test normalization ---
Test: normtest.cmp_close(expnorm)
Test: passed
***/