def test_open_file_dual():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
output_file = os.path.join(CUR_DIR, 'files/output_tests/output_dual.txt')
parser = AplosParser(filename=test_file)
matrices = parser.read_matrices_from_file(output_file, dual=True)
ex_A = [[1, 2], [2, 5]]
ex_b = [3, 2]
ex_c = [9, 4]
ex_Eqin = [1, 1]
ex_minmax = [-1]
ex_varconstr = [1, 1]
ex = {
'A': ex_A,
'b': ex_b,
'c': ex_c,
"Eqin": ex_Eqin,
'MinMax': ex_minmax,
'VarConstr': ex_varconstr
}
assert ex == matrices
def test_dim_empty():
with pytest.warns(RuntimeWarning):
parser = AplosParser(text=' ')
with pytest.raises(exceptions.EmptyLPException):
parser.get_dimensions()
def test_get_matrix_errors():
FILE_NAME = 'error_lp_1.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
with pytest.raises(exceptions.LPErrorException):
A = parser.get_matrix('A')
def test_get_matrix_empty():
with pytest.warns(RuntimeWarning):
parser = AplosParser(text='')
with pytest.raises(exceptions.EmptyLPException):
if not parser.detect_errors():
A = parser.get_matrix('A')
def test_dim_no_detect_errors():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
with pytest.raises(exceptions.LPErrorException):
parser.get_dimensions()
def test_save_to_file_empty():
with pytest.warns(RuntimeWarning):
parser = AplosParser(text='')
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
output_file = os.path.join(CUR_DIR, 'files/output_tests/output.txt')
with pytest.raises(exceptions.EmptyLPException):
parser.write_matrices_to_file(output_file)
def test_open_file_error():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
output_file = os.path.join(CUR_DIR, 'files/output_tests/output_wrong.txt')
parser = AplosParser(filename=test_file)
with pytest.raises(exceptions.LPReadException):
matrices = parser.read_matrices_from_file(output_file)
def test_open_file_non_existing():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
with pytest.raises(IOError):
matrices = parser.read_matrices_from_file('a_path')
def test_get_matrix_no_arg():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
if not parser.detect_errors():
with pytest.raises(exceptions.MissingArgumentsException):
A = parser.get_matrix()
def test_det_errors_no_errors():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
errors = parser.detect_errors()
assert errors == []
def test_save_to_file_errors():
FILE_NAME = 'error_lp_1.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
with pytest.raises(exceptions.LPErrorException):
output_file = os.path.join(CUR_DIR, 'files/output_tests/output.txt')
parser.write_matrices_to_file(output_file)
def test_dim_normal():
FILE_NAME = 'secondary_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
if not parser.detect_errors():
dims = parser.get_dimensions()
expected = {'m': 2, 'n': 6}
assert dims == expected
def test_get_matrix():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/'+FILE_NAME)
parser = AplosParser(filename=test_file)
if not parser.detect_errors():
A = parser.get_dual_matrix('A')
b = parser.get_dual_matrix('b')
c = parser.get_dual_matrix('c')
Eqin = parser.get_dual_matrix('EQin')
minmax = parser.get_dual_matrix('minMAX')
var_constr = parser.get_dual_matrix('var_constr')
expected_A = [[1,2],[2,5]]
expected_b = [3,2]
expected_c = [9,4]
expected_Eqin = [1,1]
expected_minmax = [-1]
expected_var_constr = [1,1]
assert A == expected_A and \
b == expected_b and \
c == expected_c and \
Eqin == expected_Eqin and \
minmax == expected_minmax and \
var_constr == expected_var_constr
def test_save_to_file_normal():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
if not parser.detect_errors():
output_file = os.path.join(CUR_DIR, 'files/output_tests/output.txt')
expected_file = os.path.join(CUR_DIR, 'files/matrices_file.txt')
parser.write_matrices_to_file(output_file)
with open(output_file, 'r') as of, open(expected_file, 'r') as ef:
assert of.read() == ef.read()
def test_det_errors_normal():
FILE_NAME = 'error_lp_2.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
with pytest.warns(RuntimeWarning):
parser = AplosParser(filename=test_file)
errors = parser.detect_errors()
expected = []
expected.append('Min/Max is not specified for object function')
expected.append("Constraint initializer 's.t' or similar is missing")
assert errors == expected
def test_det_errors_no_end():
FILE_NAME = 'error_lp_1.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
with pytest.warns(RuntimeWarning):
parser = AplosParser(filename=test_file)
errors = parser.detect_errors(print_msg=True)
expected = []
expected.append('Min/Max is not specified for object function')
expected.append('No END statement found')
expected.append('Constraint type missing from some constraints')
expected.append('Right side argument missing from some constraints')
assert errors == expected
def test_open_file_not_exists():
FILE_NAME = 'NOT_EXISTS.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
with pytest.raises(IOError):
parser = AplosParser(filename=test_file)
def test_text_wrong_delimeter():
text = '''Max 3x1 +2x2| s.t. x1+2x2<=9 |2 x1+5x2<=4|End'''
parser = AplosParser(text=text, delimeter='.')
res = []
res.append('Max3x1+2x2|s')
res.append('t')
res.append('x1+2x2<=9|2x1+5x2<=4|End')
assert parser.lp_lines == res
def test_open_file_no_lines():
FILE_NAME = 'empty.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
with pytest.warns(RuntimeWarning):
parser = AplosParser(filename=test_file)
res = []
assert parser.lp_lines == res
def test_text_custom_delimeter_line():
text = '''Max 3x1 +2x2| s.t. x1+2x2<=9 |2 x1+5x2<=4|End'''
parser = AplosParser(text=text, delimeter='|')
res = []
res.append('Max3x1+2x2')
res.append('s.t.x1+2x2<=9')
res.append('2x1+5x2<=4')
res.append('End')
assert parser.lp_lines == res
def test_text_custom_delimeter_comma():
text = '''Max 3x1 +2x2,s.t. x1+2x2<=9,2x1+5x2<=4,End'''
parser = AplosParser(text=text, delimeter=',')
res = []
res.append('Max3x1+2x2')
res.append('s.t.x1+2x2<=9')
res.append('2x1+5x2<=4')
res.append('End')
assert parser.lp_lines == res
def test_open_file_exists():
FILE_NAME = 'main_lp.txt'
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
test_file = os.path.join(CUR_DIR, 'files/' + FILE_NAME)
parser = AplosParser(filename=test_file)
res = []
res.append('Max3x1+2x2')
res.append('s.t.x1+2x2<=9')
res.append('2x1+5x2<=4')
res.append('End')
assert parser.lp_lines == res
def test_normal_text():
text = '''Max 3x1 +2x2
s.t. x1+2x2<=9
2x1+5x2<=4
End'''
parser = AplosParser(text=text)
res = []
res.append('Max3x1+2x2')
res.append('s.t.x1+2x2<=9')
res.append('2x1+5x2<=4')
res.append('End')
assert parser.lp_lines == res
def test_text_no_arguments():
with pytest.raises(exceptions.MissingArgumentsException):
parser = AplosParser()
def test_empty_text():
with pytest.warns(RuntimeWarning):
parser = AplosParser(text='')
def test_det_errors_empty():
with pytest.warns(RuntimeWarning), pytest.raises(
exceptions.EmptyLPException):
parser = AplosParser(text=' ')
errors = parser.detect_errors()