def test_mutiplication_with_variable():
v = Variable(3)
o = Variable(2)
assert v * o == 6
assert v / o == 1.5
assert v // o == 1
def test_power():
v = Variable(3)
o = Variable(2)
assert v**2 == 9
assert 2**v == 8
assert v**o == 9
def __init__(self):
self.solver = Solver()
self.a = Variable(1, 30)
self.b = Variable(2, 10)
self.c = Variable(3, 10)
self.c_eq = EquationConstraint(
lambda a, b, c: a + b + c, a=self.a, b=self.b, c=self.c
)
self.solver.add_constraint(self.c_eq)
def test_modulo():
v = Variable(3)
o = Variable(2)
assert v % 2 == 1
assert 4 % v == 1
assert v % o == 1
assert divmod(v, 2) == (1, 1)
assert divmod(4, v) == (1, 1)
assert divmod(v, o) == (1, 1)
def test_set_xy():
pos = Position((1, 2))
x = Variable()
y = Variable()
assert x is not pos.x
assert y is not pos.y
pos.set_x(x)
pos.set_y(y)
assert x is pos.x
assert y is pos.y
def test_strength_change(self):
"""Test strength change"""
solver = Solver()
a = Variable(1, 30)
b = Variable(2, 10)
c = Variable(3, 10)
c_eq = EquationConstraint(lambda a, b, c: a + b + c, a=a, b=b, c=c)
solver.add_constraint(c_eq)
b.strength = 9
self.assertEqual(c_eq._weakest, [b])
def test_strength_change(self):
"""Test strength change"""
solver = Solver()
a = Variable(1, 30)
b = Variable(2, 10)
c = Variable(3, 10)
c_eq = EquationConstraint(lambda a, b, c: a + b + c, a=a, b=b, c=c)
solver.add_constraint(c_eq)
b.strength = 9
self.assertEqual(c_eq._weakest, [b])
def test_line_constraint(item_pos):
"""Test line creation constraint.
"""
line = (Variable(3), Variable(4)), (Variable(5), Variable(6))
item_pos.item.constraint(line=(item_pos.pos1, line))
assert 1 == len(item_pos.item._constraints)
c = item_pos.item._constraints[0]
assert isinstance(c, LineConstraint)
assert (1, 2) == c._point
assert ((3, 4), (5, 6)) == c._line
def test_juggle_error_is_raised_when_constraints_can_not_be_resolved():
solver = Solver()
a = Variable()
b = Variable()
c = Variable(40, strength=REQUIRED)
d = Variable(30, strength=REQUIRED)
solver.add_constraint(EqualsConstraint(a, b))
solver.add_constraint(EqualsConstraint(a, c))
solver.add_constraint(EqualsConstraint(b, d))
with pytest.raises(JuggleError):
solver.solve()
def test_weakest_list(self):
"""Test weakest list"""
solver = Solver()
a = Variable(1, 30)
b = Variable(2, 10)
c = Variable(3, 10)
c_eq = EquationConstraint(lambda a, b, c: a + b + c, a=a, b=b, c=c)
solver.add_constraint(c_eq)
# because of kwargs above we cannot test by the order of arguments
self.assertTrue(b in c_eq._weakest)
self.assertTrue(c in c_eq._weakest)
def test_weakest_list_order(self):
"""Test weakest list order"""
solver = Solver()
a = Variable(1, 30)
b = Variable(2, 10)
c = Variable(3, 10)
c_eq = EquationConstraint(lambda a, b, c: a + b + c, a=a, b=b, c=c)
solver.add_constraint(c_eq)
weakest = [el for el in c_eq._weakest]
a.value = 4
self.assertEqual(c_eq._weakest, weakest) # does not change if non-weak variable changed
b.value = 5
self.assertEqual(c_eq.weakest(), c)
b.value = 6
self.assertEqual(c_eq.weakest(), c)
# b changed above, now change a - all weakest variables changed
# return the oldest changed variable then
c.value = 6
self.assertEqual(c_eq.weakest(), b)
b.value = 6
self.assertEqual(c_eq.weakest(), c)
def test_left_of_constraint(self):
"""
Test "less than" constraint (horizontal) creation.
"""
item = Item()
p1 = Variable(1), Variable(2)
p2 = Variable(3), Variable(4)
item.constraint(left_of=(p1, p2))
self.assertEquals(1, len(item._constraints))
c = item._constraints[0]
self.assertTrue(isinstance(c, LessThanConstraint))
self.assertEquals(1, c.smaller)
self.assertEquals(3, c.bigger)
def test_above_constraint(self):
"""
Test "less than" constraint (vertical) creation.
"""
item = Item()
p1 = Variable(1), Variable(2)
p2 = Variable(3), Variable(4)
item.constraint(above=(p1, p2))
self.assertEquals(1, len(item._constraints))
c = item._constraints[0]
self.assertTrue(isinstance(c, LessThanConstraint))
self.assertEquals(2, c.smaller)
self.assertEquals(4, c.bigger)
def test_equality():
v = Variable(3)
w = Variable(3)
o = Variable(2)
assert v == 3
assert 3 == v
assert v == w
assert not v == o
assert v != 2
assert 2 != v
assert not 3 != v
assert v != o
def test_horizontal_constraint(self):
"""
Test horizontal constraint creation.
"""
item = Item()
p1 = Variable(1), Variable(2)
p2 = Variable(3), Variable(4)
item.constraint(horizontal=(p1, p2))
self.assertEqual(1, len(item._constraints))
c = item._constraints[0]
self.assertTrue(isinstance(c, EqualsConstraint))
# expect constraint on y-axis
self.assertEqual(2, c.a)
self.assertEqual(4, c.b)
def test_vertical_constraint(self):
"""
Test vertical constraint creation.
"""
item = Item()
p1 = Variable(1), Variable(2)
p2 = Variable(3), Variable(4)
item.constraint(vertical=(p1, p2))
self.assertEquals(1, len(item._constraints))
c = item._constraints[0]
self.assertTrue(isinstance(c, EqualsConstraint))
# expect constraint on x-axis
self.assertEquals(1, c.a)
self.assertEquals(3, c.b)
def __init__(self, state_m, size, custom_background_color,
background_color, hierarchy_level):
super(StateView, self).__init__(size[0], size[1])
assert isinstance(state_m, AbstractStateModel)
# Reapply size, as Gaphas sets default minimum size to 1, which is too large for highly nested states
self.min_width = self.min_height = 0
self.width = size[0]
self.height = size[1]
self.custom_background_color = custom_background_color
self.background_color = background_color
self.background_changed = False
self._c_min_w = self._constraints[0]
self._c_min_h = self._constraints[1]
self.is_root_state_of_library = state_m.state.is_root_state_of_library
self._state_m = ref(state_m)
self.hierarchy_level = hierarchy_level
self._income = None
self._outcomes = []
self._inputs = []
self._outputs = []
self._scoped_variables = []
self._scoped_variables_ports = []
self.keep_rect_constraints = {}
self.port_constraints = {}
self._moving = False
self._view = None
self.__symbol_size_cache = {}
self._image_cache = ImageCache()
self._border_width = Variable(
min(self.width, self.height) /
constants.BORDER_WIDTH_STATE_SIZE_FACTOR)
border_width_constraint = BorderWidthConstraint(
self._handles[NW].pos, self._handles[SE].pos, self._border_width,
constants.BORDER_WIDTH_STATE_SIZE_FACTOR)
self._constraints.append(border_width_constraint)
# Initialize NameView
name_meta = state_m.get_meta_data_editor()['name']
if not contains_geometric_info(name_meta['size']):
name_width = self.width - 2 * self._border_width
name_height = self.height * 0.4
name_meta = state_m.set_meta_data_editor(
'name.size', (name_width, name_height))['name']
name_size = name_meta['size']
self._name_view = NameView(state_m.state.name, name_size)
if not contains_geometric_info(name_meta['rel_pos']):
name_meta['rel_pos'] = (self.border_width, self.border_width)
name_pos = name_meta['rel_pos']
self.name_view.matrix.translate(*name_pos)
def test_add_to_variable():
v = Variable(3)
assert v + 1 == 4
assert v - 1 == 2
assert 1 + v == 4
assert 4 - v == 1
def test_presentation_should_unlink_when_diagram_changes(diagram):
presentation = diagram.create(Example)
diagram.connections.add_constraint(presentation,
BaseConstraint(Variable()))
assert len(list(
diagram.connections.get_connections(item=presentation))) == 1
presentation.diagram = None
assert not list(diagram.connections.get_connections(item=presentation))
def test_variable_decorator_set_variable():
class A:
x = variable(varname="sx", strength=STRONG)
a = A()
v = Variable(4)
a.x = v
assert a.x == 4
assert a.x is not v
def test_mutiplication():
v = Variable(3)
assert v * 2 == 6
assert v / 2 == 1.5
assert v // 2 == 1
assert 2 * v == 6
assert 4.5 / v == 1.5
assert 4 // v == 1
def test_min_size(self):
"""Test minimal size constraint"""
solver = Solver()
v1 = Variable(0)
v2 = Variable(10)
v3 = Variable(10)
c1 = EqualsConstraint(a=v2, b=v3)
c2 = LessThanConstraint(smaller=v1, bigger=v3, delta=10)
solver.add_constraint(c1)
solver.add_constraint(c2)
# check everyting is ok on start
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(10, v2)
self.assertEquals(10, v3)
# change v1 to 2, after solve it should be 0 again due to LT
# constraint
v1.value = 2
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(10, v2)
self.assertEquals(10, v3)
# change v3 to 20, after solve v2 will follow thanks to EQ
# constraint
v3.value = 20
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(20, v2)
self.assertEquals(20, v3)
# change v3 to 0, after solve it shoul be 10 due to LT.delta = 10,
# v2 should also be 10 due to EQ constraint
v3.value = 0
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(10, v2)
self.assertEquals(10, v3)
def test_min_size(solv):
"""Test minimal size constraint.
"""
v1 = Variable(0)
v2 = Variable(10)
v3 = Variable(10)
c1 = EqualsConstraint(a=v2, b=v3)
c2 = LessThanConstraint(smaller=v1, bigger=v3, delta=10)
solv.solver.add_constraint(c1)
solv.solver.add_constraint(c2)
# Check everything is ok on start
solv.solver.solve()
assert 0 == v1
assert 10 == v2
assert 10 == v3
# Change v1 to 2, after solve it should be 0 again due to LT constraint
v1.value = 2
solv.solver.solve()
assert 0 == v1
assert 10 == v2
assert 10 == v3
# Change v3 to 20, after solve v2 will follow thanks to EQ constraint
v3.value = 20
solv.solver.solve()
assert 0 == v1
assert 20 == v2
assert 20 == v3
# Change v3 to 0, after solve it should be 10 due to LT.delta = 10, v2
# should also be 10 due to EQ constraint
v3.value = 0
solv.solver.solve()
assert 0 == v1
assert 10 == v2
assert 10 == v3
def test_notify_for_nested_constraint():
events = []
solver = Solver()
a = Variable()
b = Variable()
nested = EqualsConstraint(a, b)
multi = MultiConstraint(nested)
solver.add_constraint(multi)
solver.solve()
def handler(constraint):
events.append(constraint)
solver.add_handler(handler)
a.value = 10
solver.solve()
assert multi in events
assert nested not in events
def test_comparison():
v = Variable(3)
assert v > 2
assert v < 4
assert v >= 2
assert v >= 3
assert v <= 4
assert v <= 3
assert not v > 3
assert not v < 3
assert not v <= 2
assert not v >= 4
def test_inverse_comparison():
v = Variable(3)
assert 4 > v
assert 2 < v
assert 4 >= v
assert 3 >= v
assert 2 <= v
assert 3 <= v
assert not 3 > v
assert not 3 < v
assert not 4 <= v
assert not 2 >= v
def test_pos_constraint():
"""Test position constraint"""
x1, y1 = Variable(10), Variable(11)
x2, y2 = Variable(12), Variable(13)
pc = PositionConstraint(origin=(x1, y1), point=(x2, y2))
pc.solve_for()
# origin shall remain the same
assert 10 == x1
assert 11 == y1
# point shall be moved to origin
assert 10 == x2
assert 11 == y2
# change just x of origin
x1.value = 15
pc.solve_for()
assert 15 == x2
# change just y of origin
y1.value = 14
pc.solve_for()
assert 14 == y2
def test_pos_constraint(self):
"""Test position constraint"""
x1, y1 = Variable(10), Variable(11)
x2, y2 = Variable(12), Variable(13)
pc = PositionConstraint(origin=(x1, y1), point=(x2, y2))
pc.solve_for()
# origin shall remain the same
self.assertEquals(10, x1)
self.assertEquals(11, y1)
# point shall be moved to origin
self.assertEquals(10, x2)
self.assertEquals(11, y2)
# change just x of origin
x1.value = 15
pc.solve_for()
self.assertEquals(15, x2)
# change just y of origin
y1.value = 14
pc.solve_for()
self.assertEquals(14, y2)
def test_min_size(self):
"""Test minimal size constraint"""
solver = Solver()
v1 = Variable(0)
v2 = Variable(10)
v3 = Variable(10)
c1 = EqualsConstraint(a=v2, b=v3)
c2 = LessThanConstraint(smaller=v1, bigger=v3, delta=10)
solver.add_constraint(c1)
solver.add_constraint(c2)
# check everyting is ok on start
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(10, v2)
self.assertEquals(10, v3)
# change v1 to 2, after solve it should be 0 again due to LT
# constraint
v1.value = 2
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(10, v2)
self.assertEquals(10, v3)
# change v3 to 20, after solve v2 will follow thanks to EQ
# constraint
v3.value = 20
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(20, v2)
self.assertEquals(20, v3)
# change v3 to 0, after solve it shoul be 10 due to LT.delta = 10,
# v2 should also be 10 due to EQ constraint
v3.value = 0
solver.solve()
self.assertEquals(0, v1)
self.assertEquals(10, v2)
self.assertEquals(10, v3)
def test_min_size(solv):
"""Test minimal size constraint.
"""
v1 = Variable(0)
v2 = Variable(10)
v3 = Variable(10)
c1 = EqualsConstraint(a=v2, b=v3)
c2 = LessThanConstraint(smaller=v1, bigger=v3, delta=10)
solv.solver.add_constraint(c1)
solv.solver.add_constraint(c2)
# Check everything is ok on start
solv.solver.solve()
assert 0 == v1
assert 10 == v2
assert 10 == v3
# Change v1 to 2, after solve it should be 0 again due to LT constraint
v1.value = 2
solv.solver.solve()
assert 0 == v1
assert 10 == v2
assert 10 == v3
# Change v3 to 20, after solve v2 will follow thanks to EQ constraint
v3.value = 20
solv.solver.solve()
assert 0 == v1
assert 20 == v2
assert 20 == v3
# Change v3 to 0, after solve it should be 10 due to LT.delta = 10, v2
# should also be 10 due to EQ constraint
v3.value = 0
solv.solver.solve()
assert 0 == v1
assert 10 == v2
assert 10 == v3
def test_line_constraint(self):
"""
Test line creation constraint.
"""
item = Item()
pos = Variable(1), Variable(2)
line = (Variable(3), Variable(4)), (Variable(5), Variable(6))
item.constraint(line=(pos, line))
self.assertEquals(1, len(item._constraints))
c = item._constraints[0]
self.assertTrue(isinstance(c, LineConstraint))
self.assertEquals((1, 2), c._point)
self.assertEquals(((3, 4), (5, 6)), c._line)
def test_delta_below_zero():
"""Test line align constraint with delta below zero."""
line = (Variable(0), Variable(0)), (Variable(30), Variable(20))
point = (Variable(15), Variable(10))
lc = LineAlignConstraint(line=line, point=point, align=0.5, delta=-5)
lc.solve_for()
assert round(abs(10.84 - point[0].value), 2) == 0
assert round(abs(7.23 - point[1].value), 2) == 0
line[1][0].value = 40
line[1][1].value = 30
lc.solve_for()
assert round(abs(16.0 - point[0].value), 2) == 0
assert round(abs(12.00 - point[1].value), 2) == 0
def test_delta():
"""Test line align constraint delta."""
line = (Variable(0), Variable(0)), (Variable(30), Variable(20))
point = (Variable(15), Variable(10))
lc = LineAlignConstraint(line=line, point=point, align=0.5, delta=5)
lc.solve_for()
assert round(abs(19.16 - point[0].value), 2) == 0
assert round(abs(12.77 - point[1].value), 2) == 0
line[1][0].value = 40
line[1][1].value = 30
lc.solve_for()
assert round(abs(24.00 - point[0].value), 2) == 0
assert round(abs(18.00 - point[1].value), 2) == 0
def test_delta(self):
"""Test line align delta
"""
line = (Variable(0), Variable(0)), (Variable(30), Variable(20))
point = (Variable(15), Variable(10))
lc = LineAlignConstraint(line=line, point=point, align=0.5, delta=5)
lc.solve_for()
self.assertAlmostEqual(19.16, point[0].value, 2)
self.assertAlmostEqual(12.77, point[1].value, 2)
line[1][0].value = 40
line[1][1].value = 30
lc.solve_for()
self.assertAlmostEqual(24.00, point[0].value, 2)
self.assertAlmostEqual(18.00, point[1].value, 2)
def test_delta_below_zero(self):
"""Test line align with delta below zero
"""
line = (Variable(0), Variable(0)), (Variable(30), Variable(20))
point = (Variable(15), Variable(10))
lc = LineAlignConstraint(line=line, point=point, align=0.5, delta=-5)
lc.solve_for()
self.assertAlmostEqual(10.84, point[0].value, 2)
self.assertAlmostEqual(7.23, point[1].value, 2)
line[1][0].value = 40
line[1][1].value = 30
lc.solve_for()
self.assertAlmostEqual(16.0, point[0].value, 2)
self.assertAlmostEqual(12.00, point[1].value, 2)
def test_pos_constraint():
"""Test position constraint."""
x1, y1 = Variable(10), Variable(11)
x2, y2 = Variable(12), Variable(13)
pc = PositionConstraint(origin=(x1, y1), point=(x2, y2))
pc.solve_for()
# origin shall remain the same
assert 10 == x1
assert 11 == y1
# point shall be moved to origin
assert 10 == x2
assert 11 == y2
# change just x of origin
x1.value = 15
pc.solve_for()
assert 15 == x2
# change just y of origin
y1.value = 14
pc.solve_for()
assert 14 == y2
