Beispiel #1
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def test_duplicate():

    p1 = Parameter('test_parameter', 1.0, min_value=-5.0, max_value=5.0, delta=0.2, desc='test', free=False, unit='MeV')

    p2 = p1.duplicate()

    assert p1.to_dict() == p2.to_dict()
Beispiel #2
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def test_set_delta_nounits():

    p = Parameter('test_parameter', 1.0)

    p.delta = 0.5

    assert p.delta == 0.5
Beispiel #3
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def test_set_delta_units():

    p = Parameter('test_parameter', 1.0, unit='GeV')

    p.delta = 500 * u.MeV

    assert p.delta == 0.5
Beispiel #4
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def test_set_within_bounds_units():

    p = Parameter('test_parameter',1.0 * u.keV, min_value = -2.0 * u.MeV, max_value = 2.0 * u.MeV, unit=u.keV)

    p.value = 1.2 * u.MeV

    assert p.value == 1200.0
Beispiel #5
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def test_set_outside_bounds_units():

    p = Parameter('test_parameter', 1.0 * u.keV, min_value = -2.0 * u.MeV, max_value = 2.0 * u.MeV, unit=u.keV)

    with pytest.raises(SettingOutOfBounds):

        p.value = -10.0 * u.MeV
Beispiel #6
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def test_set_within_bounds_no_units():

    p = Parameter('test_parameter',1.0, min_value = -2.0, max_value = 2.0)

    p.value = 1.5

    assert p.value == 1.5
Beispiel #7
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def test_set_no_units():

    p = Parameter('test_parameter',1.0)

    p.value = 25.4

    assert p.value == 25.4
Beispiel #8
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def test_set_bounds_nounits():

    p = Parameter('test_parameter', 1.0)

    p.bounds = (-2.0 ,2.0)

    assert p.min_value == -2.0
    assert p.max_value == 2.0
Beispiel #9
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def test_set_bounds_units():

    p = Parameter('test_parameter', 1.0 * u.keV)

    p.bounds = (-2.0 * u.MeV, 2.0 * u.eV)

    assert p.min_value == -2000
    assert p.max_value == 2e-3
Beispiel #10
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def test_set_remove_minimum():
    p1 = Parameter('test_parameter', 1.0, min_value=-5.0, max_value=5.0, delta=0.2, desc='test', free=False, unit='MeV')

    p1.remove_minimum()

    assert p1.min_value == None

    p1.value = -1000.0

    assert p1.value == -1000.0
Beispiel #11
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def test_set_auxiliary_variable():

    p1 = Parameter('test_parameter', 1.0, min_value=-5.0, max_value=5.0, delta=0.2, desc='test', free=False, unit='MeV')

    x = Parameter('aux_variable', 1.0)

    # ax + b

    law = Line()
    law.a = 1.0
    law.b = 2.0

    p1.add_auxiliary_variable(x, law)

    assert p1.has_auxiliary_variable() == True

    assert p1.value == 3.0

    x.value = 4.0

    assert p1.value == 6.0

    # Check that assigning to the parameter doesn't produce any effect
    p1.value = -1.0

    assert p1.value == 6.0
Beispiel #12
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def test_set_units():

    p = Parameter('test_parameter',1.0, unit=u.keV)

    p.value = 3.0 * u.MeV

    assert p.value == 3000.0

    with pytest.raises(u.UnitConversionError):

        p.value = 3.0 * u.cm
Beispiel #13
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def test_input_output_with_external_parameters():

    mg = ModelGetter()
    m = mg.model

    # Create an external parameter
    fake_parameter = Parameter("external_parameter", 1.0, min_value=-1.0, max_value=1.0, free=True)

    # Link as equal (default)
    m.add_external_parameter(fake_parameter)

    # Save model

    temp_file = "__test.yml"

    m.save(temp_file, overwrite=True)

    # Now reload it again
    m_reloaded = load_model(temp_file)

    os.remove(temp_file)

    # Check that all sources have been recovered
    assert m_reloaded.sources.keys() == m.sources.keys()

    # Check that the external parameter have been recovered
    assert 'external_parameter' in m_reloaded
Beispiel #14
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def test_constructor_complete():

    p = Parameter('test_parameter', 1.0, min_value=-5.0, max_value=5.0, delta=0.2, desc='test', free=False, unit=u.MeV)

    assert p.min_value == -5.0
    assert p.max_value == 5.0
    assert p.value == 1.0
    assert p.delta == 0.2
    assert p.name == 'test_parameter'
    assert p.description == 'test'
    assert p.fix == True
    assert p.free == False
    assert p.has_prior() == False
    assert p.prior is None

    assert p.unit == u.MeV
Beispiel #15
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def test_conflicting_units_in_initial_value_and_unit_keyword():

    p = Parameter('test_parameter', 1.0 * u.keV, desc='Description', unit=u.MeV)

    assert p.min_value is None
    assert p.max_value is None
    assert p.value == 1.0e-3
    assert isinstance(p.delta, float)
    assert p.name == 'test_parameter'
    assert p.description == 'Description'
    assert p.fix == False
    assert p.free == True
    assert p.has_prior() == False
    assert p.prior is None

    assert p.unit == u.MeV
Beispiel #16
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def test_default_constructor_units():

    p = Parameter('test_parameter', 1.0 * u.keV, desc='Description')

    assert p.min_value is None
    assert p.max_value is None
    assert p.value == 1.0
    assert isinstance(p.delta, float)
    assert p.name == 'test_parameter'
    assert p.description == 'Description'
    assert p.fix == False
    assert p.free == True
    assert p.has_prior() == False
    assert p.prior is None

    assert p.unit == u.keV
Beispiel #17
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    def _get_parameter_from_input(number_or_parameter, minimum, maximum, what, desc):

        # Try to transform it to float, if it works than we transform it to a parameter

        try:

            number_or_parameter = float(number_or_parameter)

        except TypeError:

            assert isinstance(number_or_parameter, Parameter), "%s must be either a number or a " \
                                                               "parameter instance" % what

            # So this is a Parameter instance already. Enforce that it has the right maximum and minimum

            parameter = number_or_parameter

            assert parameter.min_value == minimum, "%s must have a minimum of %s" % (what, minimum)
            assert parameter.max_value == maximum, "%s must have a maximum of %s" % (what, maximum)

        else:

            # This was a float. Enforce that it has a legal value

            assert minimum <= number_or_parameter <= maximum, "%s cannot have a value of %s, " \
                                                              "it must be %s <= %s <= %s" % (what, number_or_parameter,
                                                                                             minimum, what, maximum)

            parameter = Parameter(what, number_or_parameter,
                                  desc=desc, min_value=minimum, max_value=maximum, unit='deg')

        return parameter
Beispiel #18
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def test_default_constructor():

    p = Parameter('test_parameter', 1.0, desc='Description')

    assert p.min_value is None
    assert p.max_value is None
    assert p.value == 1.0
    assert isinstance(p.delta, float)
    assert p.name == 'test_parameter'
    assert p.description == 'Description'
    assert p.fix == False
    assert p.free == True
    assert p.has_prior() == False
    assert p.prior is None

    assert p.unit == u.dimensionless_unscaled

    # Test that we cannot call a parameter with a name with spaces in it
    with pytest.raises(AssertionError):

        _ = Parameter('test parameter 2', 1.0)
Beispiel #19
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def test_get_randomized_value():

    # Test randomization no boundaries (normal distribution)
    p1 = Parameter('test_parameter', 1.0)

    val2 = p1.get_randomized_value(0.1)

    assert isinstance(val2, float)

    # Test the randomized value with truncated normal, i.e., with boundaries

    p2 = Parameter('test_parameter', 1.0, min_value=-5.0, max_value=5.0, delta=0.2, desc='test', free=False, unit='MeV')

    val1 = p2.get_randomized_value(0.1)

    assert p2.min_value <= val1 <= p2.max_value

    # Test the same but with a large variance

    val1 = p2.get_randomized_value(10.0)

    assert p2.min_value <= val1 <= p2.max_value
Beispiel #20
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def test_external_parameters():

    mg = ModelGetter()

    m = mg.model

    n_free_before_external = len(m.free_parameters)

    # Create parameter
    fake_parameter = Parameter("external_parameter",1.0, min_value=-1.0, max_value=1.0, free=True)

    # Link as equal (default)
    m.add_external_parameter(fake_parameter)

    assert len(m.free_parameters) - 1 == n_free_before_external

    # Try to display it just to make sure it works

    m.display()

    # Now test that we can remove it
    m.remove_external_parameter("external_parameter")

    assert len(m.free_parameters) == n_free_before_external
Beispiel #21
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def test_constructor_with_units():

    p = Parameter('test_parameter', 1.0, unit=u.keV)

    assert p.unit == u.keV
Beispiel #22
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def test_constructor_with_delta():

    p = Parameter('test_parameter', 1.0, delta=0.3)

    assert p.delta == 0.3
Beispiel #23
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def test_constructor_with_boundaries():

    p = Parameter('test_parameter', 1.0, min_value=-5, max_value=5)

    assert p.min_value == -5
    assert p.max_value == 5
Beispiel #24
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def test_remove_auxiliary_variable():

    p1 = Parameter('test_parameter', 1.0, min_value=-5.0, max_value=5.0, delta=0.2, desc='test', free=False, unit='MeV')

    x = Parameter('aux_variable', 1.0)

    # ax + b

    law = Line()
    law.a = 1.0
    law.b = 2.0

    p1.add_auxiliary_variable(x, law)

    assert p1.value == 3.0

    x.value = 4.0

    assert p1.value == 6.0

    p1.remove_auxiliary_variable()

    assert p1.has_auxiliary_variable() == False

    p1.value = -1.0

    assert p1.value == -1.0