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hdl.mem: coerce memory init values to integers.

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The coercion is carefully chosen to accept (other than normal ints)
instances of e.g. np.int64, but reject instances of e.g. float.
See https://stackoverflow.com/a/48940855/254415 for details.

Fixes #93.
This commit is contained in:
whitequark 2019-06-11 03:38:44 +00:00
parent 2423eabc15
commit 58e39f90ce
2 changed files with 18 additions and 6 deletions
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8
nmigen/test/test_hdl_mem.py
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@ -29,11 +29,17 @@ class MemoryTestCase(FHDLTestCase):
m = Memory(width=8, depth=4, init=range(4))
self.assertEqual(m.init, [0, 1, 2, 3])
def test_init_wrong(self):
def test_init_wrong_count(self):
with self.assertRaises(ValueError,
msg="Memory initialization value count exceed memory depth (8 > 4)"):
m = Memory(width=8, depth=4, init=range(8))
def test_init_wrong_type(self):
with self.assertRaises(TypeError,
msg="Memory initialization value at address 1: "
"'str' object cannot be interpreted as an integer"):
m = Memory(width=8, depth=4, init=[1, "0"])
def test_read_port_transparent(self):
mem = Memory(width=8, depth=4)
rdport = mem.read_port()