Removed 12 unnecessary stubbings in ChangesSinceLastUnstableBuildMacr…

[ARUS2023]

…oTest.java

Testing done

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In our analysis of the project, we observed that

1. 3 unnecessary stubbings which stubbed getChangeSet method, getChangeSets method, and getNumber method in ChangesSinceLastUnstableBuildMacroTest.createBuild are created but are only executed by some of the method calls in the test ChangesSinceLastUnstableBuildMacroTest.testGetContent_shouldGetPreviousBuildsThatArentUnstable_HUDSON3519, We duplicated the createBuild method, removed the unnecessary stubbings, named it createBuild2, and applied the new method to the method call which does not execute the stubbings in the test.

2. 4 unnecessary stubbings which stubbed getResult method, getChangeSet method, getChangeSets method, and getNumber method in ChangesSinceLastUnstableBuildMacroTest.createBuild are created but are not executed by the test ChangesSinceLastUnstableBuildMacroTest.testGetContent_shouldGetPreviousBuildsThatArentUnstable_HUDSON3519, We duplicated the createBuild method, removed the unnecessary stubbings, named it createBuild3, and applied the new method to the method call which does not execute the stubbings in the test.

3. 2 unnecessary stubbings which stubbed getResult method, getChangeSet method in ChangesSinceLastUnstableBuildMacroTest.createBuildWithAffectedFiles are created but are are only executed by some of the method calls in 8 tests: ChangesSinceLastUnstableBuildMacroTest.testGetContent_shouldGetPreviousBuildFailures, ChangesSinceLastUnstableBuildMacroTest.testGetContent_whenReverseOrderIsTrueShouldReverseOrderOfChanges, ChangesSinceLastUnstableBuildMacroTest.testGetContent_shouldGetPreviousBuildsThatArentUnstable_HUDSON3519, ChangesSinceLastUnstableBuildMacroTest.testShouldPrintDate,
   ChangesSinceLastUnstableBuildMacroTest.testShouldPrintRevision, ChangesSinceLastUnstableBuildMacroTest.testShouldPrintPath,
   ChangesSinceLastUnstableBuildMacroTest.testWhenShowPathsIsTrueShouldPrintPath, ChangesSinceLastUnstableBuildMacroTest.testRegexReplace; We duplicated the createBuild method, removed the unnecessary stubbings, named it createBuild4, and applied the new method to the method call which does not execute the stubbings in the test.

4. 1 unnecessary stubbings which stubbed getResult method, getChangeSet method in ChangesSinceLastUnstableBuildMacroTest.createBuildWithNoChanges are created but are never executed. We removed it.

5. 1 unnecessary stubbing which stubbed iterator method in ChangesSinceLastUnstableBuildMacroTest.createChangeLog is created but is only executed by some specific method calls in the test ChangesSinceLastUnstableBuildMacroTest.testGetContent_shouldGetPreviousBuildsThatArentUnstable_HUDSON3519. We duplicated the method, removed the unnecessary stubbings from the new duplicated method, named it createChangeLog2, and applied to the specific method call that doesn't execute the stubbing. We removed it.

6. 1 unnecessary stubbing which stubbed iterator method in ChangesSinceLastUnstableBuildMacroTest.createBuildWithAffectedFiles.createEmptyChangeLog is created but is never executed. We removed it.

7. 3 unnecessary stubbings in the test 'ChangesSinceLastUnstableBuildMacroTest.testGetContent_shouldGetPreviousBuildsThatArentUnstable_HUDSON3519' are created but are never executed. We removed them.

8. 1 unnecessary stubbing in the test 'ChangesSinceLastUnstableBuildMacroTest. whenReverseOrderIsTrueShouldReverseOrderOfChanges' is created but is never executed. We removed it.

Unnecessary stubbings are stubbed method calls that were never realized during test execution. Mockito recommends to remove unnecessary stubbings (https://www.javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/exceptions/misusing/UnnecessaryStubbingException.html).

We propose below a solution to remove the unnecessary stubbings.

[slide]

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[ARUS2023]

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