2018-12-18 11:05:37 -07:00
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import unittest
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tests: move out of the main package.
Compared to tests in the repository root, tests in the package have
many downsides:
* Unless explicitly excluded in find_packages(), tests and their
support code effectively become a part of public API.
This, unfortunately, happened with FHDLTestCase, which was never
intended for downstream use.
* Even if explicitly excluded from the setuptools package, using
an editable install, or setting PYTHONPATH still allows accessing
the tests.
* Having a sub-package that is present in the source tree but not
exported (or, worse, exported only sometimes) is confusing.
* The name `nmigen.test` cannot be used for anything else, such as
testing utilities that *are* intended for downstream use.
2020-08-26 18:33:31 -06:00
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from nmigen.compat import *
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2018-12-18 11:05:37 -07:00
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from .support import SimCase
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class ConstantCase(SimCase, unittest.TestCase):
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class TestBench(Module):
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def __init__(self):
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self.sigs = [
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(Signal(3), Constant(0), 0),
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(Signal(3), Constant(5), 5),
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(Signal(3), Constant(1, 2), 1),
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(Signal(3), Constant(-1, 7), 7),
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(Signal(3), Constant(0b10101)[:3], 0b101),
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(Signal(3), Constant(0b10101)[1:4], 0b10),
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(Signal(4), Constant(0b1100)[::-1], 0b0011),
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]
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self.comb += [a.eq(b) for a, b, c in self.sigs]
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def test_comparisons(self):
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def gen():
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for s, l, v in self.tb.sigs:
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s = yield s
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self.assertEqual(
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s, int(v),
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"got {}, want {} from literal {}".format(
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s, v, l))
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self.run_with(gen())
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