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

Example 76 with ConcurrentMap

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

the class ConcurrentHashMap8Test method testMerge1.

/**
     * merge adds when the given key is not present
     */
public void testMerge1() {
    ConcurrentMap map = map5();
    assertEquals("Y", map.merge(six, "Y", (x, y) -> "Z"));
}

Example 77 with ConcurrentMap

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

the class ConcurrentHashMap8Test method testCompute4.

/**
     * compute removes when the given key is present and function returns null
     */
public void testCompute4() {
    ConcurrentMap map = map5();
    map.compute(one, (x, y) -> null);
    assertFalse(map.containsKey(one));
}

Example 78 with ConcurrentMap

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

the class ConcurrentHashMap8Test method testMerge2.

/**
     * merge replaces when the given key is present
     */
public void testMerge2() {
    ConcurrentMap map = map5();
    assertEquals("Z", map.merge(one, "Y", (x, y) -> "Z"));
}

Example 79 with ConcurrentMap

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

the class ConcurrentHashMap8Test method map5.

/**
     * Returns a new map from Integers 1-5 to Strings "A"-"E".
     */
private static ConcurrentMap 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 80 with ConcurrentMap

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

the class ConcurrentHashMap8Test method testComputeIfPresent2.

/**
     * computeIfPresent adds when the given key is not present
     */
public void testComputeIfPresent2() {
    ConcurrentMap map = map5();
    assertEquals("Z", map.computeIfPresent(one, (x, y) -> "Z"));
}