Examples with ConcurrentMap java.util.concurrent.ConcurrentMap used on opensource projects

Example 81 with ConcurrentMap

use of java.util.concurrent.ConcurrentMap in project caffeine by ben-manes.

the class ConcurrentHashMap8Test method testComputeIfAbsent.

/**
     * computeIfAbsent adds when the given key is not present
     */
public void testComputeIfAbsent() {
    ConcurrentMap map = map5();
    map.computeIfAbsent(six, (x) -> "Z");
    assertTrue(map.containsKey(six));
}

Example 82 with ConcurrentMap

use of java.util.concurrent.ConcurrentMap in project caffeine by ben-manes.

the class ConcurrentHashMap8Test method testCompute3.

/**
     * compute replaces when the given key is present
     */
public void testCompute3() {
    ConcurrentMap map = map5();
    assertEquals("Z", map.compute(one, (x, y) -> "Z"));
}

Example 83 with ConcurrentMap

use of java.util.concurrent.ConcurrentMap in project caffeine by ben-manes.

the class ConcurrentHashMapTest method testReplaceValue2_NullPointerException.

/**
     * replace(x, null, y) throws NPE
     */
public void testReplaceValue2_NullPointerException() {
    ConcurrentMap c = map();
    try {
        c.replace("whatever", null, "A");
        shouldThrow();
    } catch (NullPointerException success) {
    }
}

Example 84 with ConcurrentMap

use of java.util.concurrent.ConcurrentMap in project caffeine by ben-manes.

the class ConcurrentHashMapTest method map5.

/**
     * Returns a new map from Integers 1-5 to Strings "A"-"E".
     */
private static ConcurrentMap<Integer, String> map5() {
    ConcurrentMap map = map();
    assertTrue(map.isEmpty());
    map.put(one, "A");
    map.put(two, "B");
    map.put(three, "C");
    map.put(four, "D");
    map.put(five, "E");
    assertFalse(map.isEmpty());
    assertEquals(5, map.size());
    return map;
}

Example 85 with ConcurrentMap

use of java.util.concurrent.ConcurrentMap in project caffeine by ben-manes.

the class ConcurrentHashMapTest method testReplace.

/**
     * replace fails when the given key is not present
     */
public void testReplace() {
    ConcurrentMap map = map5();
    assertNull(map.replace(six, "Z"));
    assertFalse(map.containsKey(six));
}