added sample service test class

[josephbate]

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Summary

• made changes to the sampleHumanDaoimpl to take in the id as a String which is in line with the data base
• created the sam pleServiceTest class to hundle all intergrated test

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however there is a challenge i faced in getSamplesForPatient_shouldReturnSamplesForPatient() where database update operation violates foreign key constraints in both patient and SampleHuman tables which triggers the a PersistenceException is occurring due to a ConstraintViolationException.
could you please give me any Suggestion
here's link tothe error: https://pastebin.com/w0DDeLGD
Cc. @mozzy11
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[mozzy11]

@josephbate can you run mvn spotless:apply . the CI build fails because of formating error

[josephbate]

@josephbate can you run mvn spotless:apply . the CI build fails because of formating error

Oh sorry
Let me fixed that quickly

[josephbate]

hello moses think i have fixed it

[josephbate]

ihave fixed it
please review it again
and also please adress my issue on the test case getSamplesForPatient_shouldReturnSamplesForPatient()
which i commented out