fixing unit test: frustum depends on THREE.Sphere to be defined
Updating quaternion fromEuler. Tests were failing silently, only showing on console, but throwing an exception makes the tests properly fail.
Merge branch 'fixing-frustum-unit-test' of https://github.com/danielribeiro/three.js into dev
Merge branch 'updating-quaternion-fromEuler-tests' of https://github.com/danielribeiro/three.js into dev