runtime/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.UnsupportedException;
   4 import org.argeo.slc.test.TestData;
   5 import org.argeo.slc.test.TestDataProvider;
   6
   7 /** Utilities for dealing with test datas. */
   8 public class TestDataUtils {
   9         /** Extracts the test data from the given provider. */
  10         public static <T extends TestData> T getFromProvider(Object obj,
  11                         Class<T> clss, String key) {
  12                 if (obj instanceof TestDataProvider) {
  13                         TestDataProvider testDataProvider = (TestDataProvider) obj;
  14                         return testDataProvider.getTestData(clss, key);
  15                 } else {
  16                         throw new UnsupportedException("test data provider", obj);
  17                 }
  18         }
  19
  20         /**
  21          * Extracts the test data from the given provider using <code>null</code>
  22          * as key.
  23          */
  24         public static <T extends TestData> T getFromProvider(Object obj,
  25                         Class<T> clss) {
  26                 return getFromProvider(obj, clss, null);
  27         }
  28
  29         /**
  30          * Returns it self after making the proper checks. Used for test data being
  31          * their own data providers.
  32          */
  33         public static <T extends TestData> T getItSelf(Class<T> clss,
  34                         TestData testDataObject) {
  35                 if (clss.isAssignableFrom(testDataObject.getClass())) {
  36                         return (T) testDataObject;
  37                 } else {
  38                         throw new UnsupportedException("test data", testDataObject);
  39                 }
  40
  41         }
  42
  43         /** Makes sure this is an utility class. */
  44         private TestDataUtils() {
  45
  46         }
  47 }