def test_Component_write_to_file_simple(self, mock_f):
"""
Testing that a Component can be written to file with the
expected output. Here with simple input.
"""
comp = Component("test_component", "Arm")
comp._unfreeze()
# Need to set up attribute parameters
# Also need to categorize them as when created
comp.parameter_names = []
comp.parameter_defaults = {}
comp.parameter_types = {}
comp._freeze()
with mock_f('test.txt', 'w') as m_fo:
comp.write_component(m_fo)
my_call = unittest.mock.call
expected_writes = [
my_call("COMPONENT test_component = Arm("),
my_call(")\n"),
my_call("AT (0,0,0)"),
my_call(" ABSOLUTE\n")
]
mock_f.assert_called_with('test.txt', 'w')
handle = mock_f()
handle.write.assert_has_calls(expected_writes, any_order=False)
def test_component_basic_init_set_parameters(self):
"""
Testing set_parameters method. Need to set some attribute
parameters manually to test this.
"""
comp = Component("test_component", "Arm")
# Need to add some parameters to this bare component
# Parameters are usually added by McStas_Instr
comp._unfreeze()
comp.new_par1 = 1
comp.new_par2 = 3
comp.this_par = 1492.2
comp.set_parameters({
"new_par1": 37.0,
"new_par2": 12.0,
"this_par": 1
})
self.assertEqual(comp.name, "test_component")
self.assertEqual(comp.component_name, "Arm")
self.assertEqual(comp.new_par1, 37.0)
self.assertEqual(comp.new_par2, 12.0)
self.assertEqual(comp.this_par, 1)
with self.assertRaises(NameError):
comp.set_parameters({"new_par3": 37.0})
def test_Component_basic_new_attribute_error(self):
"""
The Component class is frozen after initialize in order to
prevent the user accidentilly misspelling an attribute name,
or at least be able to report an error when they do so.
"""
comp = Component("test_component", "Arm")
with self.assertRaises(AttributeError):
comp.new_attribute = 1
# If unfreeze does not work, this would cause an error
comp._unfreeze()
comp.new_attribute = 1
def test_Component_freeze(self):
"""
Testing frozen Component cant have new attributes, and that
_unfreeze / _freeze works correctly.
"""
comp = Component("test_component", "Arm")
with self.assertRaises(AttributeError):
comp.new_parameter = 5
self.assertEqual(comp.name, "test_component")
self.assertEqual(comp.component_name, "Arm")
comp._unfreeze()
comp.new_parameter = 5
self.assertEqual(comp.new_parameter, 5)
comp._freeze()
with self.assertRaises(AttributeError):
comp.another_parameter = 5