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test/java/util/IdentityHashMap/Capacity.java

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  22  */
  23 
  24 import java.lang.reflect.Field;
  25 import java.util.ArrayList;
  26 import java.util.Collections;
  27 import java.util.IdentityHashMap;
  28 import java.util.List;
  29 import java.util.Random;
  30 
  31 import org.testng.annotations.DataProvider;
  32 import org.testng.annotations.Test;
  33 
  34 import static org.testng.Assert.*;
  35 
  36 /*
  37  * @test
  38  * @bug 6904367
  39  * @summary IdentityHashMap reallocates storage when inserting expected
  40  *          number of elements
  41  * @run testng Capacity

  42  */
  43 
  44 @Test
  45 public class Capacity {
  46     static final Field tableField;
  47     static final Random random = new Random();
  48     static final Object[][] sizesData;
  49 
  50     @DataProvider(name="sizes", parallel = true)
  51     public Object[][] sizesToTest() { return sizesData; }
  52 
  53     static {
  54         try {
  55             tableField = IdentityHashMap.class.getDeclaredField("table");
  56             tableField.setAccessible(true);
  57         } catch (NoSuchFieldException e) {
  58             throw new LinkageError("table", e);
  59         }
  60 
  61         ArrayList<Object[]> sizes = new ArrayList<>();




  22  */
  23 
  24 import java.lang.reflect.Field;
  25 import java.util.ArrayList;
  26 import java.util.Collections;
  27 import java.util.IdentityHashMap;
  28 import java.util.List;
  29 import java.util.Random;
  30 
  31 import org.testng.annotations.DataProvider;
  32 import org.testng.annotations.Test;
  33 
  34 import static org.testng.Assert.*;
  35 
  36 /*
  37  * @test
  38  * @bug 6904367
  39  * @summary IdentityHashMap reallocates storage when inserting expected
  40  *          number of elements
  41  * @run testng Capacity
  42  * @key randomness
  43  */
  44 
  45 @Test
  46 public class Capacity {
  47     static final Field tableField;
  48     static final Random random = new Random();
  49     static final Object[][] sizesData;
  50 
  51     @DataProvider(name="sizes", parallel = true)
  52     public Object[][] sizesToTest() { return sizesData; }
  53 
  54     static {
  55         try {
  56             tableField = IdentityHashMap.class.getDeclaredField("table");
  57             tableField.setAccessible(true);
  58         } catch (NoSuchFieldException e) {
  59             throw new LinkageError("table", e);
  60         }
  61 
  62         ArrayList<Object[]> sizes = new ArrayList<>();


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