SUT is io.jenkins.plugins.analysis.core.quality.HealthReportBuilder. The deprecated class hudson.plugins.analysis.core.HealthReportBuilder and the associated test should not be touched.

I also updated the branch so that this test does not require Mockito, i.e. now the method

 
public HealthReport computeHealth(final AnalysisResult result) 

should be tested.

You can reuse (i.e. copy) some portions of the old test if that makes sense.

Thank you for clarification. 

Code changed in jenkins
User: Alexandra
Path:
clean.sh
go.sh
jenkins.sh
skip.sh
src/main/java/io/jenkins/plugins/analysis/core/model/AnalysisResult.java
src/main/java/io/jenkins/plugins/analysis/core/quality/HealthReportBuilder.java
src/main/java/io/jenkins/plugins/analysis/core/views/ResultAction.java
src/test/java/io/jenkins/plugins/analysis/core/quality/HealthReportBuilderTest.java
http://jenkins-ci.org/commit/analysis-core-plugin/578d24eef568515e08c0262d6272ff197f01f811
Log:
Merge pull request #2 from loelala/JENKINS-50066/UnitTest-HealthReportBuilder

Jenkins 50066/unit test health report builder

Code changed in jenkins
User: loelala
Path:
src/test/java/io/jenkins/plugins/analysis/core/quality/HealthReportBuilderTest.java
http://jenkins-ci.org/commit/analysis-core-plugin/c5cb9799e4281e3ecf2d66bdf78b008b78d2e49b
Log:
JENKINS-50066 adjusted style, renamed some local fields and renamed method names

Code changed in jenkins
User: loelala
Path:
src/test/java/io/jenkins/plugins/analysis/core/quality/HealthReportBuilderTest.java
http://jenkins-ci.org/commit/analysis-core-plugin/80e06c37f3bdb4d5476a9f8c92b600dcdb4df949
Log:
Merge branch 'JENKINS-50066/UnitTest-HealthReportBuilder' into hm-edu-testing

Code changed in jenkins
User: Ulli Hafner
Path:
src/main/java/io/jenkins/plugins/analysis/core/model/AnalysisResult.java
src/main/java/io/jenkins/plugins/analysis/core/quality/HealthReportBuilder.java
src/main/java/io/jenkins/plugins/analysis/core/views/ResultAction.java
http://jenkins-ci.org/commit/analysis-core-plugin/85f967253db5521b766f303a294a35ead8772230
Log:
JENKINS-50066 Refactored parameters of computeHealth.

Now the method does not depend on AnalysisResult anymore. It gets
the required size values by a map.