should make rotationY matrix1ms ‣
const angle = 1.23;
const c = Math.cos(angle);
const s = Math.sin(angle);
const expected = [
c, 0, -s, 0,
0, 1, 0, 0,
s, 0, c, 0,
];
testMat3WithAndWithoutDest((newDst) => {
return mat3.rotationY(angle, newDst);
}, expected);