[ViewVC] Diff of: jsr166/jsr166/src/test/tck/ConcurrentHashMapTest.java

Comparing jsr166/src/test/tck/ConcurrentHashMapTest.java (file contents):
Revision 1.47 by jsr166, Mon Jul 27 03:12:26 2015 UTC vs.
Revision 1.48 by jsr166, Sun Jul 17 03:40:07 2016 UTC

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+    /**
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+     * Tests performance of removeAll when the other collection is much smaller.
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+     * ant -Djsr166.tckTestClass=ConcurrentHashMapTest -Djsr166.methodFilter=testRemoveAll_performance -Djsr166.expensiveTests=true tck
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+     */
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+    public void testRemoveAll_performance() {
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+        int mapSize = expensiveTests ? 1_000_000 : 100;
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+        int iterations = expensiveTests ? 500 : 2;
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+        ConcurrentHashMap<Integer, Integer> map = new ConcurrentHashMap<>();
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+        for (int i = 0; i < mapSize; i++)
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+            map.put(i, i);
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+        Set<Integer> keySet = map.keySet();
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+        Collection<Integer> removeMe = Arrays.asList(new Integer[] { -99, -86 });
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+        for (int i = 0; i < iterations; i++)
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+            assertFalse(keySet.removeAll(removeMe));
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+        assertEquals(mapSize, map.size());
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+    }

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