#1703 allow snapshot usage

[SDallmann]

This PR fixes #1703

In order to be able create projects while using the SNAPSHOT version, said version was permitted during the verification of the minimum required version. This change affected some Unit Tests, which had to be adapted.

Implemented changes:

1. In .../AbstractIdeContext.java: allowed SNAPSHOT during the verification of the minimum required version.
2. In .../IdeVersion.java: added a method to mock the current version from SNAPSHOT to a specific version (setMockVersionForTesting(..)) and a method to reset the version back to SNAPSHOT (setSnapshotVersionForTesting()).
3. Moved and renamed the test testIdeVersionTooSmall() from .../IdeContextTest.java to .../CreateCommandletTest.java as testIdeVersionTooOldForExistingProject().
4. Renamed the test testIdeVersionTooSmall() from .../CreateCommandletTest.java to testIdeVersionTooOldOnProjectCreation().
5. Adapted both tests from 3. and 4. to use the methods added in 2.

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[coveralls]

Pull Request Test Coverage Report for Build 22072482950

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 16 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.006%) to 70.471%

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Files with Coverage Reduction	New Missed Lines	%
com/devonfw/tools/ide/context/AbstractIdeContext.java	16	67.19%

Totals
Change from base Build 22072399074:	0.006%
Covered Lines:	10498
Relevant Lines:	14311

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💛 - Coveralls

[hohwille]

@SDallmann thanks for your PR. All looking good to me. 👍
I added a single review comment for improvement of the JUnit.
Apart from that ready for merge.

[hohwille]

Great finding.
However, the best way to do this is in an @AfterAll method that is guaranteed to be executed by JUnit after this method (and allows to do it in a single place so you do not have to repeat it in testIdeVersionTooOldForExistingProject()).
Assume that some assertion above fails then this line is never reached.
You could avoid this by a try {} finally {} block but the easiest and cleanest solution is to use @AfterAll for cleaning up such side-effects. The method should be called tearDown() according to JUnit conventions.