Yifan Zhou f8a70f1d33
[Unittest]: Complement remaining tests in apis/core/utils (#110)
* Add remaining tests

* Use another method to import

* try to fix ppl import error

* try to fix pyppl import bug 2

* try to fix pyppl import error 3

* try to fix pyppl import error 4

* Use test class

* remove ()

* lint

* add else branch
2021-10-09 14:05:48 +08:00
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