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import unittest
# --------------------------------------------------------------------
class TestStdout(unittest.TestCase):
def testStdoutRedirect(self):
from io import StringIO
import sys
prevstdout = sys.stdout
prevstderr = sys.stderr
sys.stdout = StringIO()
sys.stderr = StringIO()
import numpy as np
from petsc4py import PETSc
if not (__name__ == '__main__'):
PETSc._push_python_vfprintf()
a = np.array([0.0, 0.0, 0.0], dtype=PETSc.ScalarType)
a_vec = PETSc.Vec().createWithArray(a, comm=PETSc.COMM_SELF)
a_vec.view()
v = PETSc.Viewer.STDERR(PETSc.COMM_SELF)
v.printfASCII('Error message')
newstdout = sys.stdout
newstderr = sys.stderr
sys.stdout = prevstdout
sys.stderr = prevstderr
output = newstdout.getvalue()
error = newstderr.getvalue()
if not (__name__ == '__main__'):
PETSc._pop_python_vfprintf()
stdoutshouldbe = """Vec Object: 1 MPI process
type: seq
0.
0.
0.
"""
stderrshouldbe = 'Error message'
if PETSc._stdout_is_stderr():
stdoutshouldbe = stdoutshouldbe + stderrshouldbe
stderrshouldbe = ''
self.assertEqual(output, stdoutshouldbe)
self.assertEqual(error, stderrshouldbe)
# --------------------------------------------------------------------
if __name__ == '__main__':
unittest.main()
# --------------------------------------------------------------------
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