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import pytest
from gn3.api.rqtl2 import fibonacci
def test_fibonacci_zero():
assert fibonacci(0) == 0
def test_fibonacci_one():
assert fibonacci(1) == 1
def test_fibonacci_ten():
assert fibonacci(10) == 55
def test_fibonacci_negative():
with pytest.raises(ValueError) as excinfo:
fibonacci(-1)
assert "non-negative integer" in str(excinfo.value)
def test_fibonacci_non_integer():
with pytest.raises(ValueError) as excinfo:
fibonacci(5.5)
assert "non-negative integer" in str(excinfo.value)
def test_fibonacci_large():
assert fibonacci(20) == 6765
@pytest.mark.parametrize("n, expected", [
(2, 1),
(3, 2),
(4, 3),
(5, 5),
(6, 8),
(7, 13),
])
def test_fibonacci_multiple(n, expected):
assert fibonacci(n) == expected
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