Improved CustomDeclarationOrderCheck

[damianszczepanik]

• Added tests to increase coverage
• Fixed rule in test method
• Fixed formatting (indents)

Pull #295

[coveralls]

Coverage increased (+1.18%) when pulling 15cd0e8 on damianszczepanik:CustomDeclarationOrderCheck into d2c4c45 on sevntu-checkstyle:master.

[damianszczepanik]

OK, let me summarize reason of changes:

1. I found that rule "MainMethod()" is not parsed and it should be "MainMethod(.*)" as it is mentioned in default order https://github.com/sevntu-checkstyle/sevntu.checkstyle/blob/master/sevntu-checks/src/main/java/com/github/sevntu/checkstyle/checks/coding/CustomDeclarationOrderCheck.java#L200
   Since 'main' method has only one valid signature (or rather two: with [] and ...) so using rule "MainMethod()" should ends with error. Currently both are accepted but only one is parsed.
2. Added "this" to field because one branch was not covered (expect to have DOT token)
3. Added new test to cover branch that triggers wrong "MainMethod()" order.

Finally it improves coverage by +1.18% :-)

[romani]

thanks a lot !