qubit-collapse-test.rs

...
    #[test]
    fn test_collapes_of_state() {
        let mut qubit = Qubit{ theta: f64::consts::PI / 2.0, phi: 0.0 };

        let want = Qubit::measure(&mut qubit);

        for _n in 0..100 {
            let got = Qubit::measure(&mut qubit);
            assert_eq!(got, want);
	    }
    }
}