Minor improvements to readability within tests

[StefanSpieker]

Minor improvements to readability within Tests

Testing done

Ran maven test locally on a Windows machine.

Proposed changelog entries

N/A

Proposed upgrade guidelines

N/A

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1. The Jira issue, if it exists, is well-described.

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2. The changelog entries and upgrade guidelines are appropriate for the audience affected by the change (users or developers, depending on the change) and are in the imperative mood (see [examples](https://github.com/jenkins-infra/jenkins.io/blob/master/content/_data/changelogs/weekly.yml)). Fill in the **Proposed upgrade guidelines** section only if there are breaking changes or changes that may require extra steps from users during upgrade.

   The changelog entries and upgrade guidelines are appropriate for the audience affected by the change (users or developers, depending on the change) and are in the imperative mood (see examples). Fill in the Proposed upgrade guidelines section only if there are breaking changes or changes that may require extra steps from users during upgrade.
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3. There is automated testing or an explanation as to why this change has no tests.

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4. New public classes, fields, and methods are annotated with `@Restricted` or have `@since TODO` Javadocs, as appropriate.

   New public classes, fields, and methods are annotated with @Restricted or have @since TODO Javadocs, as appropriate.
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5. New deprecations are annotated with `@Deprecated(since = "TODO")` or `@Deprecated(forRemoval = true, since = "TODO")`, if applicable.

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6. New or substantially changed JavaScript is not defined inline and does not call `eval` to ease future introduction of Content Security Policy (CSP) directives (see [documentation](https://www.jenkins.io/doc/developer/security/csp/)).

   New or substantially changed JavaScript is not defined inline and does not call eval to ease future introduction of Content Security Policy (CSP) directives (see documentation).
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7. For dependency updates, there are links to external changelogs and, if possible, full differentials.

   For dependency updates, there are links to external changelogs and, if possible, full differentials.
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8. For new APIs and extension points, there is a link to at least one consumer.

   For new APIs and extension points, there is a link to at least one consumer.
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Desired reviewers

@mention

Before the changes are marked as ready-for-merge:

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3. Changelog entries in the pull request title and/or **Proposed changelog entries** are accurate, human-readable, and in the imperative mood.

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4. Proper changelog labels are set so that the changelog can be generated automatically.

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[MarkEWaite]

This PR is now ready for merge. We will merge it after approximately 24 hours if there is no negative feedback.

/label ready-for-merge