103 lines
2.9 KiB
Python
103 lines
2.9 KiB
Python
import stl
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from stl.hypothesis import SignalTemporalLogicStrategy
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from hypothesis import given
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from pytest import raises
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CONTEXT = {
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stl.parse('AP1'): stl.parse('F(x > 4)'),
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stl.parse('AP2'): stl.parse('(AP1) U (AP1)'),
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stl.parse('AP3'): stl.parse('y < 4'),
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stl.parse('AP4'): stl.parse('y < 3'),
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stl.parse('AP5'): stl.parse('y + x > 4'),
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}
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APS = set(CONTEXT.keys())
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@given(SignalTemporalLogicStrategy)
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def test_f_neg_or_canonical_form(phi):
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phi2 = stl.utils.f_neg_or_canonical_form(phi)
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phi3 = stl.utils.f_neg_or_canonical_form(phi2)
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assert phi2 == phi3
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assert not any(
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isinstance(x, (stl.ast.G, stl.ast.And)) for x in phi2.walk())
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def test_f_neg_or_canonical_form_not_implemented():
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with raises(NotImplementedError):
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stl.utils.f_neg_or_canonical_form(stl.ast.AST())
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def test_inline_context_rigid():
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phi = stl.parse('G(AP1)')
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phi2 = phi.inline_context(CONTEXT)
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assert phi2 == stl.parse('G(F(x > 4))')
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phi = stl.parse('G(AP2)')
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phi2 = phi.inline_context(CONTEXT)
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assert phi2 == stl.parse('G((F(x > 4)) U (F(x > 4)))')
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@given(SignalTemporalLogicStrategy)
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def test_inline_context(phi):
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phi2 = phi.inline_context(CONTEXT)
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assert not (APS & phi2.atomic_predicates)
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def test_linear_stl_lipschitz_rigid():
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phi = stl.parse('(x + 3y - 4z < 3)')
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assert stl.utils.linear_stl_lipschitz(phi) == (8)
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@given(SignalTemporalLogicStrategy, SignalTemporalLogicStrategy)
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def test_linear_stl_lipschitz(phi1, phi2):
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lip1 = stl.utils.linear_stl_lipschitz(phi1)
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lip2 = stl.utils.linear_stl_lipschitz(phi2)
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phi3 = phi1 | phi2
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assert stl.utils.linear_stl_lipschitz(phi3) == max(lip1, lip2)
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@given(SignalTemporalLogicStrategy, SignalTemporalLogicStrategy)
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def test_timed_until_smoke_test(phi1, phi2):
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stl.utils.timed_until(phi1, phi2, lo=2, hi=20)
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def test_discretize():
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dt = 0.3
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phi = stl.parse('X(AP1)')
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assert stl.utils.is_discretizable(phi, dt)
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phi2 = stl.utils.discretize(phi, dt)
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phi3 = stl.utils.discretize(phi2, dt)
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assert phi2 == phi3
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phi = stl.parse('G[0.3, 1.2](F[0.6, 1.5](AP1))')
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assert stl.utils.is_discretizable(phi, dt)
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phi2 = stl.utils.discretize(phi, dt)
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phi3 = stl.utils.discretize(phi2, dt)
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assert phi2 == phi3
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phi = stl.parse('G[0.3, 1.4](F[0.6, 1.5](AP1))')
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assert not stl.utils.is_discretizable(phi, dt)
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phi = stl.parse('G[0.3, 1.2](F(AP1))')
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assert not stl.utils.is_discretizable(phi, dt)
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phi = stl.parse('G[0.3, 1.2]((AP1) U (AP2))')
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assert not stl.utils.is_discretizable(phi, dt)
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def test_scope():
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dt = 0.3
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phi = stl.parse('X(AP1)')
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assert stl.utils.scope(phi, dt) == 0.3
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phi = stl.parse('G[0.3, 1.2](F[0.6, 1.5](AP1))')
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assert stl.utils.scope(phi, dt) == 1.2 + 1.5
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phi = stl.parse('G[0.3, 1.2](F(AP1))')
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assert stl.utils.scope(phi, dt) == float('inf')
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phi = stl.parse('G[0.3, 1.2]((AP1) U (AP2))')
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assert stl.utils.scope(phi, dt) == float('inf')
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