Hi, As far as I know, the matchers I can use with assert_that are equal_to and matches_all in this file: https://github.com/apache/beam/blob/master/sdks/python/apache_beam/testing/util.py
Is there any matcher that I can test a PCollection contains a subset? Is there any matcher that I can test a PCollection contains any number of a specific element? For example, I want to test the PCollection [1, 3, 6, 10, 15, 15, 15] contains [1, 3, 6, 10], and it contains any number of 15s. Thanks, Liu
