feat(#393): RuleTestCaseContainsMockery, NumberOfMockitoMocks

[h1alexbel]

In this pull request I've introduced new rule RuleTestCaseContainsMockery for mockery detection with Mockito mocking framework.

@volodya-lombrozo take a look, please closes #393

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PR-Codex overview

This PR introduces a new rule to limit the number of mocks in test cases. It also adds support for JavaParser and updates dependencies.

Detailed summary

• Added maxNumberOfMocks parameter in RuleCorrectTestCase and Cop classes
• Updated JavaParserTestCase to include statements() method
• Added maxNumberOfMocks field in RuleCorrectTestCases class
• Updated ValidateMojo to support maxNumberOfMocks
• Refactored Cop class to accept maxNumberOfMocks
• Added MockeryTest and Mockery.java for testing mocks

The following files were skipped due to too many changes: src/test/resources/Mockery.java, src/it/exclusions/src/test/java/MockeryTest.java, src/test/resources/MockerySuppressed.java, docs/rules/mockery.md, src/test/java/com/github/lombrozo/testnames/javaparser/JavaParserTestCaseTest.java, src/main/java/com/github/lombrozo/testnames/javaparser/NumberOfMockitoMocks.java, src/test/java/com/github/lombrozo/testnames/javaparser/NumberOfMockitoMocksTest.java, src/test/java/com/github/lombrozo/testnames/rules/RuleTestCaseContainsMockeryTest.java, src/main/java/com/github/lombrozo/testnames/TestCase.java, src/main/java/com/github/lombrozo/testnames/rules/RuleTestCaseContainsMockery.java

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[h1alexbel]

@volodya-lombrozo updated, take a look, please

[h1alexbel]

@volodya-lombrozo I also researched the subject of detecting mockery and other similar patterns and found a few papers where researchers studied mock practices in the unit tests:

• MockSniffer: Characterizing and Recommending Mocking Decisions for Unit Tests
• To Mock or Not to Mock? An Empirical Study on Mocking Practices
• An empirical study on the usage of mocking frameworks in Apache software foundation

At the moment I didn't found any practical tool that checks or alerts excessive mocking/stubbing.

[volodya-lombrozo]

@rultor merge

[volodya-lombrozo]

@volodya-lombrozo I also researched the subject of detecting mockery and other similar patterns and found a few papers where researchers studied mock practices in the unit tests:

• MockSniffer: Characterizing and Recommending Mocking Decisions for Unit Tests
• To Mock or Not to Mock? An Empirical Study on Mocking Practices
• An empirical study on the usage of mocking frameworks in Apache software foundation

At the moment I didn't found any practical tool that checks or alerts excessive mocking/stubbing.

Good! Then we will be the first one.

[rultor]

@rultor merge

@volodya-lombrozo OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@volodya-lombrozo Done! FYI, the full log is here (took me 6min)