Review and correct tests

[dupuisni]

Describe the bug
Some tests are weak and can easily be passed without answering the problem described in the prompt.

Expected behavior
All problems should have tests that are not easy to be fooled. A "passed" test should mean that the problem has been solved.

Additional context
For example "qiskitHumanEval/68" is rated as difficult but the test is very easy.

Here is the prompt:

from qiskit import QuantumCircuit
from qiskit_aer import AerSimulator
from qiskit_ibm_runtime import Sampler
from numpy import pi
def zeno_elitzur_vaidman_bomb_tester(bomb_live: bool)->(float, float, float):
    """ Design a Zeno Elitzur Vaidman Bomb Tester circuit which takes the boolean if the bomb is live and outputs the percentage of successful live bomb predictions, dud bomb predictions and bombs that detonated. Use 25 cycles to increase the efficiency of the circuit.
    """    

the canonical solution:

from qiskit import QuantumCircuit
from qiskit_aer import AerSimulator
from qiskit_ibm_runtime import Sampler
from numpy import pi
def zeno_elitzur_vaidman_bomb_tester(bomb_live: bool)->(float, float, float):
    """ Design a Zeno Elitzur Vaidman Bomb Tester circuit which takes the boolean if the bomb is live and outputs the percentage of successful live bomb predictions, dud bomb predictions and bombs that detonated. Use 25 cycles to increase the efficiency of the circuit.
    """    
    live_predictions = dud_predictions = detonations = 0
    shots = 1024
    cycles = 25
    e = pi/cycles
    measurements = cycles + 1 if bomb_live else 1
    circuit = QuantumCircuit(1, measurements)
    for i in range(cycles):
        circuit.ry(e, 0)
        if bomb_live:
            circuit.measure(0, i)
    circuit.measure(0, measurements - 1)
    backend = AerSimulator()
    sampler = Sampler(mode=backend)
    job = sampler.run([circuit],shots=shots).result()
    counts= job[0].data.c.get_counts()
    if bomb_live:
        for key, value in counts.items():
            if key[0] == '1':
                detonations += value
            elif '1' in key[1:]:
                dud_predictions += value
            else:
                live_predictions += value
    else:
        live_predictions = counts['0'] if '0' in counts else 0
        dud_predictions = counts['1']
        detonations = 0
    return (live_predictions/shots, dud_predictions/shots, detonations/shots)

and the test:

def check(candidate):
    result = candidate(True)
    assert isinstance(result, tuple) and len(result) == 3
    assert result[0] >= 0.85 and result[1] <= 0.03 and result[2] <= 0.12
    assert candidate(False) == (0.0, 1.0, 0.0)

Below a solution that was generated by an LLM which clearly does not answer the problem but does pass the test:

from qiskit import QuantumCircuit
from qiskit_aer import AerSimulator
from qiskit_ibm_runtime import Sampler
from numpy import pi
def zeno_elitzur_vaidman_bomb_tester(bomb_live: bool)->(float, float, float):
    """ Design a Zeno Elitzur Vaidman Bomb Tester circuit which takes the boolean if the bomb is live and outputs the percentage of successful live bomb predictions, dud bomb predictions and bombs that detonated. Use 25 cycles to increase the efficiency of the circuit.
    """
    if bomb_live:
        return (1, 0, 0)
    else:
        return (0, 1, 0)