* now the price will return even if it is exactly 0
* now the price will return even if it is exactly 0
* now the price will return even if it is exactly 0
* clean code
* clean code
* update testing code coverage
* change zero testing to SE4
* remove row duplicate
* fix date comments
* improve testing
* simplify if-return-0
* remove unnecessary tests
* order testing rows
* restore test_sensor_no_next_price
* remove_average_price_test
* fix test name