# This file is part of Sympathy for Data.
# Copyright (c) 2017, Combine Control Systems AB
#
# SYMPATHY FOR DATA COMMERCIAL LICENSE
# You should have received a link to the License with Sympathy for Data.
from sympathy.api import node
from sympathy.api.nodeconfig import Port, Ports, Tag, Tags
from sympathy.api.exceptions import SyDataError
[docs]
class AssertEqualTable(node.Node):
name = 'Assert Equal Table'
author = 'Magnus Sandén'
description = (
'Compare the incoming tables and raise an error if they differ.')
nodeid = 'org.sysess.sympathy.data.table.assertequaltable'
icon = 'assert_equal.svg'
tags = Tags(Tag.Development.Test)
inputs = Ports([
Port.Table('Table A', name='table1'),
Port.Custom('table', 'Table B', name='table2', n=(1, None))])
outputs = Ports([
Port.Table('Output Table', name='out')])
parameters = node.parameters()
parameters.set_boolean(
'col_order', value=True, label='Compare column order',
description='Differing column order will trigger error')
parameters.set_boolean(
'col_attrs', value=True, label='Compare column attributes',
description='Differing column attributes will trigger error')
parameters.set_boolean(
'tbl_names', value=True, label='Compare table names',
description='Differing table name will trigger error')
parameters.set_boolean(
'tbl_attrs', value=True, label='Compare table attributes',
description='Differing table attributes will trigger error')
parameters.set_boolean(
'inexact_float', value=False, label='Approximate comparison of floats',
description='If any arithemtics is invovled floats should probably '
'be compared approximately.')
parameters.set_float(
'rel_tol', value=1e-5, label='Relative tolerance',
description='Floats are considered unequal if the relative difference '
'between them is larger than this value.',
editor=node.editors.spinbox_editor(step=1e-5))
parameters.set_float(
'abs_tol', value=1e-8, label='Absolute tolerance',
description='Floats are considered unequal if the absolute difference '
'between them is larger than this value.',
editor=node.editors.spinbox_editor(step=1e-8))
controllers = node.controller(
when=node.field('inexact_float', 'checked'),
action=(node.field('rel_tol', 'enabled'),
node.field('abs_tol', 'enabled')))
def execute(self, node_context):
parameters = node_context.parameters
table1 = node_context.input['table1']
out_table = node_context.output['out']
inexact_float = parameters['inexact_float'].value
rel_tol = parameters['rel_tol'].value
abs_tol = parameters['abs_tol'].value
col_order = parameters['col_order'].value
col_attrs = parameters['col_attrs'].value
tbl_names = parameters['tbl_names'].value
tbl_attrs = parameters['tbl_attrs'].value
for table2 in node_context.input.group('table2'):
try:
table1.equal_to(
table2, col_order=col_order, col_attrs=col_attrs,
tbl_names=tbl_names, tbl_attrs=tbl_attrs,
inexact_float=inexact_float, rel_tol=rel_tol,
abs_tol=abs_tol, raise_exc=True)
except AssertionError as e:
raise SyDataError(*e.args) from e
# Could use either one. They are equal after all.
out_table.source(table1)
