org.argeo.slc.core/src/main/java/org/argeo/slc/core/test/TestDataUtils.java

   1 package org.argeo.slc.core.test;
   2
   3 import org.argeo.slc.core.UnsupportedException;
   4
   5 /** Utilities for dealing with test datas. */
   6 public class TestDataUtils {
   7         /** Extracts the test data from the given provider. */
   8         public static <T extends TestData> T getFromProvider(Object obj,
   9                         Class<T> clss, String key) {
  10                 if (obj instanceof TestDataProvider) {
  11                         TestDataProvider testDataProvider = (TestDataProvider) obj;
  12                         return testDataProvider.getTestData(clss, key);
  13                 } else {
  14                         throw new UnsupportedException("test data provider", obj);
  15                 }
  16         }
  17
  18         /**
  19          * Extracts the test data from the given provider using <code>null</code>
  20          * as key.
  21          */
  22         public static <T extends TestData> T getFromProvider(Object obj,
  23                         Class<T> clss) {
  24                 return getFromProvider(obj, clss, null);
  25         }
  26
  27         /**
  28          * Returns it self after making the proper checks. Used for test data being
  29          * their own data providers.
  30          */
  31         public static <T extends TestData> T getItSelf(Class<T> clss,
  32                         TestData testDataObject) {
  33                 if (clss.isAssignableFrom(testDataObject.getClass())) {
  34                         return (T) testDataObject;
  35                 } else {
  36                         throw new UnsupportedException("test data", testDataObject);
  37                 }
  38
  39         }
  40
  41         /** Makes sure this is an utility class. */
  42         private TestDataUtils() {
  43
  44         }
  45 }