| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from __future__ import absolute_import |
| |
| import unittest |
| |
| import pandas as pd |
| |
| from apache_beam.dataframe import expressions |
| from apache_beam.dataframe import frame_base |
| from apache_beam.dataframe import frames |
| |
| |
| class FrameBaseTest(unittest.TestCase): |
| def test_elementwise_func(self): |
| a = pd.Series([1, 2, 3]) |
| b = pd.Series([100, 200, 300]) |
| empty_proxy = a[:0] |
| x = frames.DeferredSeries(expressions.PlaceholderExpression(empty_proxy)) |
| y = frames.DeferredSeries(expressions.PlaceholderExpression(empty_proxy)) |
| sub = frame_base._elementwise_function(lambda x, y: x - y) |
| |
| session = expressions.Session({x._expr: a, y._expr: b}) |
| self.assertTrue(sub(x, y)._expr.evaluate_at(session).equals(a - b)) |
| self.assertTrue(sub(x, 1)._expr.evaluate_at(session).equals(a - 1)) |
| self.assertTrue(sub(1, x)._expr.evaluate_at(session).equals(1 - a)) |
| self.assertTrue(sub(x, b)._expr.evaluate_at(session).equals(a - b)) |
| self.assertTrue(sub(a, y)._expr.evaluate_at(session).equals(a - b)) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |