Distinguish between unit and integration tests repository should build by default

[ManuelB]

Hi,
I just cloned your repository and made the following experience:

git clone https://github.com/gengo/gengo-java.git
cd gengo-java/
mvn install

...
[INFO] Surefire report directory: /Users/manuel/Projects/gengo-java/target/surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running com.gengo.client.AccountTest
Tests run: 3, Failures: 0, Errors: 3, Skipped: 0, Time elapsed: 0.194 sec <<< FAILURE!
Running com.gengo.client.JobsTest
Tests run: 3, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 0.038 sec <<< FAILURE!
Running com.gengo.client.OrderTest
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.004 sec <<< FAILURE!
Running com.gengo.client.ServiceTest
Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 0.015 sec <<< FAILURE!

Results :

Tests in error: 
  testGetAccountStats(com.gengo.client.AccountTest): This API requires authentication. Both a public and private key must be specified.
  testGetAccountPreferredTranslators(com.gengo.client.AccountTest): This API requires authentication. Both a public and private key must be specified.
  testGetAccountBalance(com.gengo.client.AccountTest): This API requires authentication. Both a public and private key must be specified.
  testPostJobsFiles(com.gengo.client.JobsTest): HTTP POST failed
  testPostJobsText(com.gengo.client.JobsTest): This API requires authentication. Both a public and private key must be specified.
  testGetOrder(com.gengo.client.OrderTest): This API requires authentication. Both a public and private key must be specified.
  testGetServiceLanguagePairs(com.gengo.client.ServiceTest): This API requires authentication. Both a public and private key must be specified.
  testGetServiceLanguages(com.gengo.client.ServiceTest): This API requires authentication. Both a public and private key must be specified.

Tests run: 9, Failures: 0, Errors: 8, Skipped: 0
...

So directly building the source code does not work because test cases are failing.

I would recommend to distinguish between unit tests and integration tests. A unit test mocks all integrations and does not need any external system. You might want to use the following project to convert your current tests to real unit tests:

https://github.com/ManuelB/mockito-caching-spy

Further you can have integration tests which are only executed during releasing the software.

To solve the problem I did:

mvn -DskipTests=true install

Hope that helps
Manuel