def test_creation_01(self):
sj = StringJoiner()
expected__str__ = ''
self.assertEqual(expected__str__, str(sj))
expected__repr__ = '{"separator": ",", "prefix": "", "suffix": "", ' \
'"nelem": 0, "str_length": 0, "elements": []}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_add_multi_01(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add_multi(1, 2, 3, "e4")
self.assertEqual("[1,2,3,e4]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 4, "str_length": 10, "elements": ["1", "2", "3", "e4"]}'
self.assertEqual(expected__repr__, repr(sj))
def test_adding_01(self):
sj = StringJoiner()
sj.add("e1")
self.assertEqual("e1", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "", "suffix": "", ' \
'"nelem": 1, "str_length": 2, "elements": ["e1"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_merge_03(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.merge([1, 2, 3, "str", 4.0, ","])
self.assertEqual("[1,2,3,str,4.0,,]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 6, "str_length": 17, "elements": ["1", "2", "3", "str", "4.0", ","]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_properties_01(self):
sj = StringJoiner(prefix="[", suffix="]")
self.assertEqual(",", sj.separator)
self.assertEqual("[", sj.prefix)
self.assertEqual("]", sj.suffix)
self.assertEqual(0, sj.nelem)
sj.add("e1").add("e2").add("e3")
self.assertEqual(3, sj.nelem)
def test_adding_02(self):
sj = StringJoiner()
sj.add("e1").add("e2")
self.assertEqual("e1,e2", str(sj))
print("Sample Default String Joiner Output:", sj)
expected__repr__ = '{"separator": ",", "prefix": "", "suffix": "", ' \
'"nelem": 2, "str_length": 5, "elements": ["e1", "e2"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_delete_item_02(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
del sj[-3]
self.assertEqual("[e2,3]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 2, "str_length": 6, "elements": ["e2", "3"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_set_item_04(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
sj[0] = "e11"
self.assertEqual("[e11,e2,3]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 3, "str_length": 10, "elements": ["e11", "e2", "3"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_adding_03(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
self.assertEqual("[e1,e2,3]", str(sj))
print(
"Sample String Joiner Output (default separator, prefix = [, suffix = ]:",
sj)
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 3, "str_length": 9, "elements": ["e1", "e2", "3"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_set_item_05(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
with self.assertRaises(IndexError):
sj[-42] = "something"
sj[-3] = "e11"
self.assertEqual("[e11,e2,3]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 3, "str_length": 10, "elements": ["e11", "e2", "3"]}'
self.assertEqual(expected__repr__, sj.__repr__())
with self.assertRaises(IndexError):
sj[42] = "something"
def test_get_item_01(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
with self.assertRaises(IndexError):
sj[-4]
self.assertEqual("e1", sj[-3])
self.assertEqual("e2", sj[-2])
self.assertEqual("3", sj[-1])
self.assertEqual("e1", sj[0])
self.assertEqual("e2", sj[1])
self.assertEqual("3", sj[2])
with self.assertRaises(IndexError):
sj[3]
with self.assertRaises(IndexError):
sj[4]
def test_adding_04(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
sj.add("e0", 0)
self.assertEqual("[e0,e1,e2,3]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 4, "str_length": 12, "elements": ["e0", "e1", "e2", "3"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_adding_06(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
sj.add("anything", -1)
self.assertEqual("[e1,e2,anything,3]", str(sj))
expected = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 4, "str_length": 18, "elements": ["e1", "e2", "anything", "3"]}'
self.assertEqual(expected, repr(sj))
with self.assertRaises(IndexError):
sj.add("something", -5)
def test_removing_01(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
sj.remove("e2")
self.assertEqual("[e1,3]", str(sj))
expected__repr__ = '{"separator": ",", "prefix": "[", "suffix": "]", ' \
'"nelem": 2, "str_length": 6, "elements": ["e1", "3"]}'
self.assertEqual(expected__repr__, sj.__repr__())
def test_adding_two_sj_01(self):
sj1 = StringJoiner()
sj2 = StringJoiner(prefix="(", suffix=")")
sj1.add_multi("sj1_e1", "sj1_e2")
sj2.add_multi("sj2_e1", "sj2_e2")
sj1_2 = sj1 + sj2 # the sum is not cumulative. You get a different results if you change the order.
self.assertEqual('sj1_e1,sj1_e2,sj2_e1,sj2_e2', str(sj1_2))
sj2_1 = sj2 + sj1
self.assertEqual('(sj2_e1,sj2_e2,sj1_e1,sj1_e2)', str(sj2_1))
self.assertEqual('sj1_e1,sj1_e2', str(sj1))
self.assertEqual('(sj2_e1,sj2_e2)', str(sj2))
def test_subtract_two_sj_01(self):
sj1 = StringJoiner()
sj1.add_multi("e1", "e2", "e3")
sj2 = StringJoiner()
sj2.add_multi("e2", "e3", "e4")
sj1_2 = sj1 - sj2
self.assertEqual("e1", str(sj1_2))
expected__repr__ = '{"separator": ",", "prefix": "", "suffix": "", ' \
'"nelem": 1, "str_length": 2, "elements": ["e1"]}'
self.assertEqual(expected__repr__, repr(sj1_2))
sj2_1 = sj2 - sj1
self.assertEqual("e4", str(sj2_1))
expected__repr__ = '{"separator": ",", "prefix": "", "suffix": "", ' \
'"nelem": 1, "str_length": 2, "elements": ["e4"]}'
self.assertEqual(expected__repr__, repr(sj2_1))
def test_removing_02(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
with self.assertRaises(ValueError):
sj.remove("non-existing")
def test_delete_item_04(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
with self.assertRaises(IndexError):
del sj[-4]
def test_merge_02(self):
sj1 = StringJoiner(prefix="[", suffix="]")
sj1.add("e1").add("e2").add(3)
sj2 = StringJoiner(prefix="(", suffix=")")
sj2.add("o1").add("o2")
sj2.merge(sj1, 1)
self.assertEqual("(o1,e1,e2,3,o2)", str(sj2))
expected__repr__ = '{"separator": ",", "prefix": "(", "suffix": ")", ' \
'"nelem": 5, "str_length": 15, "elements": ["o1", "e1", "e2", "3", "o2"]}'
self.assertEqual(expected__repr__, sj2.__repr__())
def test_adding_07(self):
sj = StringJoiner(prefix="[", suffix="]")
sj.add("e1").add("e2").add(3)
with self.assertRaises(IndexError):
sj.add("anything", 42)