Xiao Wang created CODEC-303:
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Summary: Refactor NoOpBaseNCodec to improve test logic
Key: CODEC-303
URL: https://issues.apache.org/jira/browse/CODEC-303
Project: Commons Codec
Issue Type: Improvement
Reporter: Xiao Wang
h3. Description
I noticed that there is a test class
[NoOpBaseNCodec|https://github.com/apache/commons-codec/blob/b70e177f8733e9dd4e5f503620ed0b136b74785b/src/test/java/org/apache/commons/codec/binary/BaseNCodecTest.java#L375]
extends production class
[BaseNCodec|https://github.com/apache/commons-codec/blob/b70e177f8733e9dd4e5f503620ed0b136b74785b/src/main/java/org/apache/commons/codec/binary/BaseNCodec.java#L51]
to assist testing [BaseNCodec.ensureBufferSize(int,
Context)|https://github.com/apache/commons-codec/blob/b70e177f8733e9dd4e5f503620ed0b136b74785b/src/main/java/org/apache/commons/codec/binary/BaseNCodec.java#L570].
This might not be the best priactice in unit testing and can be improved by
leveraging mocking frameworks.
h3. Current Implementation
* {{NoOpBaseNCodec}} extends {{BaseNCodec}} and call super constructor with
fixed parameters.
* {{NoOpBaseNCodec}} implements three abstract methods defined in parent class.
h3. Proposed Implementation
* Replace {{NoOpBaseNCodec}} with a mocking object created by Mockito.
* No need to implement the abstract methods as they will donothing by default.
* Create a method to return the mocking object for reusing.
h3. Motivation
* Decouple test class {{NoOpBaseNCodec}} from production interface
{{BaseNCodec}}.
* Remove the redundant overridden methods.
* Make testing logic more explict.
h3. More Thought
* We can get rid of the method that return the mocking object and directly
create the mocking object inside of the test case.
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