def test_sub(self):
vars1 = Variables([x, y])
vars2 = Variables([y, z])
vars3 = vars1 - vars2 # [x]
self.assertEqual(vars3, Variables([x]))
vars4 = vars1 - y # [x]
self.assertEqual(vars4, Variables([x]))
def test_add(self):
vars1 = Variables([x, y])
vars2 = Variables([y, z])
vars3 = vars1 + vars2 # [x, y, z]
self.assertEqual(vars3.size(), 3)
vars4 = vars1 + z # [x, y, z]
self.assertEqual(vars4.size(), 3)
vars5 = x + vars1 # [x, y]
self.assertEqual(vars5.size(), 2)
def test_iter(self):
vars = Variables([x, y, z])
count = 0
for var in vars:
self.assertTrue(var in vars)
count = count + 1
self.assertEqual(count, len(vars))
def test_subset_properties(self):
vars1 = Variables([x, y, z])
vars2 = Variables([x, y])
self.assertFalse(vars1.IsSubsetOf(vars2))
self.assertFalse(vars1.IsStrictSubsetOf(vars2))
self.assertTrue(vars1.IsSupersetOf(vars2))
self.assertTrue(vars1.IsStrictSupersetOf(vars2))
def test_eq(self):
vars1 = Variables([x, y, z])
vars2 = Variables([x, y])
self.assertFalse(vars1 == vars2)
def test_sub_assignment(self):
vars = Variables([x, y, z])
vars -= y # = [x, z]
self.assertEqual(vars, Variables([x, z]))
vars -= Variables([x]) # = [z]
self.assertEqual(vars, Variables([z]))
def test_intersect(self):
vars1 = Variables([x, y, z])
vars2 = Variables([y, w])
vars3 = intersect(vars1, vars2) # = [y]
self.assertEqual(vars3, Variables([y]))
def test_add_assignment(self):
vars = Variables([x])
vars += y
self.assertEqual(vars.size(), 2)
vars += Variables([x, z])
self.assertEqual(vars.size(), 3)
def test_to_string(self):
vars = Variables([x, y, z])
self.assertEqual(vars.to_string(), "{x, y, z}")
self.assertEqual("{}".format(vars), "{x, y, z}")
def test_lt(self):
vars1 = Variables([x, y])
vars2 = Variables([x, y, z])
self.assertTrue(vars1 < vars2)
def test_repr(self):
vars = Variables([x, y, z])
self.assertEqual(repr(vars), '<Variables "{x, y, z}">')
def test_get_free_variables(self):
f = x > y
self.assertEqual(f.GetFreeVariables(), Variables([x, y]))
def test_constructor_list(self):
vars = Variables([x, y, z])
self.assertEqual(vars.size(), 3)
self.assertEqual(len(vars), 3)
def test_include(self):
vars = Variables([x, y, z])
self.assertTrue(vars.include(y))
self.assertTrue(y in vars)
self.assertFalse(w in vars)
def test_erase2(self):
vars1 = Variables([x, y, z])
vars2 = Variables([w, z])
count = vars1.erase(vars2)
self.assertEqual(count, 1)
self.assertEqual(vars1.size(), 2)
def test_erase1(self):
vars = Variables([x, y, z])
count = vars.erase(x)
self.assertEqual(count, 1)
def test_insert2(self):
vars = Variables([x])
vars.insert(Variables([y, z]))
self.assertEqual(vars.size(), 3)
def test_insert1(self):
vars = Variables()
vars.insert(x)
self.assertEqual(vars.size(), 1)
def test_forall(self):
self.assertEqual(str(forall(Variables([x, y, z]), x == 0)),
"forall({x}. (x == 0))")
self.assertEqual(str(forall([x, y, z], x == 0)),
"forall({x}. (x == 0))")
def test_default_constructor(self):
vars = Variables()
self.assertEqual(vars.size(), 0)
self.assertTrue(vars.empty())