prjxray/tests/test_util.py

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#!/usr/bin/env python3
from os import environ, getcwd, chdir
import json
from tempfile import TemporaryDirectory
from contextlib import contextmanager
from unittest import TestCase, main
# Setup location of database file to a relative term so it can be generated
# in the current subdirectory, which will be a temporary one, to allow concurent
# testing.
environ['XRAY_DATABASE_ROOT'] = '.'
from prjxray.util import get_roi
@contextmanager
def setup_database(contents):
with TemporaryDirectory() as d:
olddir = getcwd()
chdir(d)
e = None
with open('tilegrid.json', 'w') as fd:
json.dump(contents, fd)
try:
yield
except Exception as ereal:
e = ereal
chdir(olddir)
if e is not None:
raise e
class TestUtil(TestCase):
def test_get_roi_gen_sites(self):
makedb = lambda sites: {
"ATILE": {
"bits": {
"CLB_IO_CLK": {
"baseaddr": "0x00400F00",
"frames": 28,
"height": 2,
"offset": 0,
"words": 2
}
},
"grid_x": 10,
"grid_y": 10,
"segment": "ASEGMENT",
"segment_type": "bram0_l",
"sites": sites,
"type": "BRAM_INT_INTERFACE_L"
}
}
with setup_database(makedb({})):
self.assertEquals(list(get_roi().gen_sites()), [])
with setup_database(makedb({'FOO': 'BAR'})):
self.assertEquals(
list(get_roi().gen_sites()), [('ATILE', 'FOO', 'BAR')])
if __name__ == '__main__':
main()