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from unittest import TestCase |
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from typish import ClsDict |
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from typish._classes import ClsFunction |
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class TestClsFunction(TestCase): |
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def test_invalid_initialization(self): |
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# Only ClsDict or dict is allowed |
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with self.assertRaises(TypeError): |
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ClsFunction(123) |
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def test_with_dict(self): |
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function = ClsFunction({ |
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int: lambda x: x * 2, |
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str: lambda x: '{}_'.format(x), |
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}) |
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self.assertEqual(4, function(2)) |
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self.assertEqual('2_', function('2')) |
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def test_with_cls_dict(self): |
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function = ClsFunction(ClsDict({ |
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int: lambda x: x * 2, |
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str: lambda x: '{}_'.format(x), |
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})) |
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self.assertEqual(4, function(2)) |
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self.assertEqual('2_', function('2')) |
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def test_multiple_args(self): |
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function = ClsFunction({ |
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int: lambda x, y: x * y, |
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str: lambda x, y: '{}{}'.format(x, y), |
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}) |
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self.assertEqual(6, function(2, 3)) |
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self.assertEqual('23', function('2', 3)) |
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def test_understands(self): |
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function = ClsFunction({ |
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int: lambda _: ..., |
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str: lambda _: ..., |
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}) |
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self.assertTrue(function.understands(1)) |
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self.assertTrue(function.understands('2')) |
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self.assertTrue(not function.understands(3.0)) |
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def test_call_no_args(self): |
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function = ClsFunction({ |
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int: lambda x: 1, |
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}) |
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with self.assertRaises(TypeError): |
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function() |
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def test_call_invalid_args(self): |
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function = ClsFunction({ |
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int: lambda x: 1, |
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}) |
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with self.assertRaises(TypeError): |
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function(1, 2) # The lambda expects only 1 argument. |
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ramonhagenaars /
typish
