Add some explanation in DatabaseTest::getConnection()
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@ -22,6 +22,12 @@ abstract class DatabaseTest extends TestCase
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/**
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* Get database connection.
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*
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* This function is executed before each test in order to get a database connection that can be used by tests.
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* If no prior connection is available, it tries to create one using the USER, PASS and DB environment variables.
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*
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* If it could not connect to the database, the test is skipped.
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*
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* @return PHPUnit_Extensions_Database_DB_IDatabaseConnection
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* @see https://phpunit.de/manual/5.7/en/database.html
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*/
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