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from pathlib import Path
from textwrap import dedent
from unittest import TestCase
from pyGHDL.dom.Misc import Design, Document
from pyGHDL.dom.Object import Constant
from pyGHDL.dom.Literal import IntegerLiteral
if __name__ == "__main__":
print("ERROR: you called a testcase declaration file as an executable module.")
print("Use: 'python -m unitest <testcase module>'")
exit(1)
class Literals(TestCase):
_root = Path(__file__).resolve().parent.parent
def test_IntegerLiteral(self):
self._filename: Path = self._root / "{className}.vhdl".format(className=self.__class__.__name__)
sourceCode = dedent("""\
package package_1 is
constant c0 : integer := 0;
constant c1 : integer := 1;
constant c2 : integer := 1024;
constant c3 : integer := 1048576;
end package;
""")
expected = (0, 1, 1024, 1048576)
with self._filename.open(mode="w", encoding="utf-8") as file:
file.write(sourceCode)
design = Design()
document = Document(self._filename)
design.Documents.append(document)
self.assertEqual(len(design.Documents[0].Packages), 1)
package = design.Documents[0].Packages[0]
self.assertTrue(package.Name == "package_1")
self.assertEqual(len(package.DeclaredItems), len(expected))
for i in range(len(expected)):
item: Constant = package.DeclaredItems[i]
self.assertTrue(isinstance(item, Constant))
self.assertTrue(item.Name == "c{}".format(i))
self.assertTrue(item.SubType.SymbolName == "integer")
self.assertTrue(isinstance(item.DefaultExpression, IntegerLiteral))
self.assertTrue(item.DefaultExpression.Value == expected[i])
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