---
migen/test/test_constant.py | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
create mode 100644 migen/test/test_constant.py
diff --git a/migen/test/test_constant.py b/migen/test/test_constant.py
new file mode 100644
index 0000000..11ac5f6
--- /dev/null
+++ b/migen/test/test_constant.py
@@ -0,0 +1,28 @@
+import unittest
+
+from migen.fhdl.std import *
+from migen.test.support import SimCase, SimBench
+
+
+class ConstantCase(SimCase, unittest.TestCase):
+ class TestBench(SimBench):
+ def __init__(self):
+ self.sigs = [
+ (Signal(3), Constant(0), 0),
+ (Signal(3), Constant(5), 5),
+ (Signal(3), Constant(1, 2), 1),
+ (Signal(3), Constant(-1, 7), 7),
+ (Signal(3), Constant(0b10101)[:3], 0b101),
+ (Signal(3), Constant(0b10101)[1:4], 0b10),
+ ]
+ self.comb += [a.eq(b) for a, b, c in self.sigs]
+
+ def test_comparisons(self):
+ def cb(tb, tbp):
+ for s, l, v in tb.sigs:
+ s = tbp.simulator.rd(s)
+ self.assertEqual(
+ s, int(v),
+ "got {}, want {} from literal {}".format(
+ s, v, l))
+ self.run_with(cb, 1)
--
2.5.0
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