| import unittest |
| |
| from tkinter import Variable, StringVar, IntVar, DoubleVar, BooleanVar, Tk |
| |
| |
| class Var(Variable): |
| |
| _default = "default" |
| side_effect = False |
| |
| def set(self, value): |
| self.side_effect = True |
| super().set(value) |
| |
| |
| class TestBase(unittest.TestCase): |
| |
| def setUp(self): |
| self.root = Tk() |
| |
| def tearDown(self): |
| self.root.destroy() |
| |
| |
| class TestVariable(TestBase): |
| |
| def test_default(self): |
| v = Variable(self.root) |
| self.assertEqual("", v.get()) |
| self.assertRegex(str(v), r"^PY_VAR(\d+)$") |
| |
| def test_name_and_value(self): |
| v = Variable(self.root, "sample string", "varname") |
| self.assertEqual("sample string", v.get()) |
| self.assertEqual("varname", str(v)) |
| |
| def test___del__(self): |
| self.assertFalse(self.root.call("info", "exists", "varname")) |
| v = Variable(self.root, "sample string", "varname") |
| self.assertTrue(self.root.call("info", "exists", "varname")) |
| del v |
| self.assertFalse(self.root.call("info", "exists", "varname")) |
| |
| def test_dont_unset_not_existing(self): |
| self.assertFalse(self.root.call("info", "exists", "varname")) |
| v1 = Variable(self.root, name="name") |
| v2 = Variable(self.root, name="name") |
| del v1 |
| self.assertFalse(self.root.call("info", "exists", "name")) |
| # shouldn't raise exception |
| del v2 |
| self.assertFalse(self.root.call("info", "exists", "name")) |
| |
| def test___eq__(self): |
| # values doesn't matter, only class and name are checked |
| v1 = Variable(self.root, name="abc") |
| v2 = Variable(self.root, name="abc") |
| self.assertEqual(v1, v2) |
| |
| v3 = Variable(self.root, name="abc") |
| v4 = StringVar(self.root, name="abc") |
| self.assertNotEqual(v3, v4) |
| |
| def test_invalid_name(self): |
| with self.assertRaises(TypeError): |
| Variable(self.root, name=123) |
| |
| def test_initialize(self): |
| v = Var() |
| self.assertFalse(v.side_effect) |
| v.set("value") |
| self.assertTrue(v.side_effect) |
| |
| |
| class TestStringVar(TestBase): |
| |
| def test_default(self): |
| v = StringVar(self.root) |
| self.assertEqual("", v.get()) |
| |
| def test_get(self): |
| v = StringVar(self.root, "abc", "name") |
| self.assertEqual("abc", v.get()) |
| self.root.globalsetvar("name", True) |
| self.assertEqual("1", v.get()) |
| |
| |
| class TestIntVar(TestBase): |
| |
| def test_default(self): |
| v = IntVar(self.root) |
| self.assertEqual(0, v.get()) |
| |
| def test_get(self): |
| v = IntVar(self.root, 123, "name") |
| self.assertEqual(123, v.get()) |
| self.root.globalsetvar("name", "345") |
| self.assertEqual(345, v.get()) |
| |
| def test_invalid_value(self): |
| v = IntVar(self.root, name="name") |
| self.root.globalsetvar("name", "value") |
| with self.assertRaises(ValueError): |
| v.get() |
| self.root.globalsetvar("name", "345.0") |
| with self.assertRaises(ValueError): |
| v.get() |
| |
| |
| class TestDoubleVar(TestBase): |
| |
| def test_default(self): |
| v = DoubleVar(self.root) |
| self.assertEqual(0.0, v.get()) |
| |
| def test_get(self): |
| v = DoubleVar(self.root, 1.23, "name") |
| self.assertAlmostEqual(1.23, v.get()) |
| self.root.globalsetvar("name", "3.45") |
| self.assertAlmostEqual(3.45, v.get()) |
| |
| def test_get_from_int(self): |
| v = DoubleVar(self.root, 1.23, "name") |
| self.assertAlmostEqual(1.23, v.get()) |
| self.root.globalsetvar("name", "3.45") |
| self.assertAlmostEqual(3.45, v.get()) |
| self.root.globalsetvar("name", "456") |
| self.assertAlmostEqual(456, v.get()) |
| |
| def test_invalid_value(self): |
| v = DoubleVar(self.root, name="name") |
| self.root.globalsetvar("name", "value") |
| with self.assertRaises(ValueError): |
| v.get() |
| |
| |
| class TestBooleanVar(TestBase): |
| |
| def test_default(self): |
| v = BooleanVar(self.root) |
| self.assertEqual(False, v.get()) |
| |
| def test_get(self): |
| v = BooleanVar(self.root, True, "name") |
| self.assertAlmostEqual(True, v.get()) |
| self.root.globalsetvar("name", "0") |
| self.assertAlmostEqual(False, v.get()) |
| |
| def test_invalid_value_domain(self): |
| v = BooleanVar(self.root, name="name") |
| self.root.globalsetvar("name", "value") |
| with self.assertRaises(ValueError): |
| v.get() |
| self.root.globalsetvar("name", "1.0") |
| with self.assertRaises(ValueError): |
| v.get() |
| |
| |
| tests_gui = (TestVariable, TestStringVar, TestIntVar, |
| TestDoubleVar, TestBooleanVar) |
| |
| |
| if __name__ == "__main__": |
| from test.support import run_unittest |
| run_unittest(*tests_gui) |