### Question:
TableInput extends Input implements Serializable { @Override @Transient @JsonIgnore public String getIdentifier() { return ConfigurationSettingTableInput.getIdentifier(this.tableName, this.databaseConnection.getUrl(), this.databaseConnection.getUsername(), this.databaseConnection.getSystem()); } TableInput();  TableInput(String name);  TableInput(String tableName, DatabaseConnection databaseConnection); String getTableName(); TableInput setTableName(String tableName); @ManyToOne(targetEntity = DatabaseConnection.class) DatabaseConnection getDatabaseConnection(); TableInput setDatabaseConnection(DatabaseConnection databaseConnection); String getComment(); TableInput setComment(String comment); @Override TableInput setId(long id); @Override @Transient @JsonIgnore String getIdentifier(); @Override int hashCode();  }### Answer:
@Test public void testGetIdentifier() { String tableName = "tableName"; DatabaseConnection connection = new DatabaseConnection("url", "user", "pwd", DbSystem.DB2); String expectedIdentifier = "tableName; url; user; DB2"; TableInput input = new TableInput("tableName", connection); String actualIdentifier = input.getIdentifier(); assertEquals(expectedIdentifier, actualIdentifier); }