35 lines
1020 B
Python
35 lines
1020 B
Python
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import asyncio
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import decimal
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import unittest
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def tearDownModule():
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asyncio.set_event_loop_policy(None)
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@unittest.skipUnless(decimal.HAVE_CONTEXTVAR, "decimal is built with a thread-local context")
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class DecimalContextTest(unittest.TestCase):
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def test_asyncio_task_decimal_context(self):
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async def fractions(t, precision, x, y):
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with decimal.localcontext() as ctx:
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ctx.prec = precision
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a = decimal.Decimal(x) / decimal.Decimal(y)
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await asyncio.sleep(t)
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b = decimal.Decimal(x) / decimal.Decimal(y ** 2)
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return a, b
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async def main():
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r1, r2 = await asyncio.gather(
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fractions(0.1, 3, 1, 3), fractions(0.2, 6, 1, 3))
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return r1, r2
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r1, r2 = asyncio.run(main())
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self.assertEqual(str(r1[0]), '0.333')
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self.assertEqual(str(r1[1]), '0.111')
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self.assertEqual(str(r2[0]), '0.333333')
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self.assertEqual(str(r2[1]), '0.111111')
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