public void testGetAfterRemoveReturnsNull() {
final String testKey = "hefty";
final Object testValue = new Object();
context.put(testKey, testValue);
context.remove(testKey);
assertNull("remove() should result in null value for get()", context.get(testKey));
}
@Test
public void shouldPreserveOldEntriesFromTheMapWhenAutoClosed() throws Exception {
final String oldValue = "oldValue";
ThreadContext.put(key, oldValue);
try (final CloseableThreadContext ignored = CloseableThreadContext.put(key, value)) {
assertThat(ThreadContext.get(key), is(value));
}
assertThat(ThreadContext.get(key), is(oldValue));
}
@Test
public void shouldNestEntries() throws Exception {
final String oldValue = "oldValue";
final String innerValue = "innerValue";
ThreadContext.put(key, oldValue);
try (final CloseableThreadContext ignored = CloseableThreadContext.put(key, value)) {
assertThat(ThreadContext.get(key), is(value));
try (final CloseableThreadContext ignored2 = CloseableThreadContext.put(key, innerValue)) {
assertThat(ThreadContext.get(key), is(innerValue));
}
assertThat(ThreadContext.get(key), is(value));
}
assertThat(ThreadContext.get(key), is(oldValue));
}
public void testClearRemovesMDCValue() {
ThreadContext log4jThreadContext = ThreadContext.newMDCEnabledContext();
Hashtable mdcContext = MDC.getContext();
assertNull(mdcContext);
final String testKey = "painter";
log4jThreadContext.put(testKey, 7);
mdcContext = MDC.getContext();
assertEquals(1, mdcContext.size());
log4jThreadContext.clear();
assertEquals(0, mdcContext.size());
assertNull("get() after clear should return null", log4jThreadContext.get(testKey));
}
public void testClearRemovesValue() {
final String testKey = "painter";
context.put(testKey, 7);
context.clear();
assertNull("get() after clear should return null", context.get(testKey));
}
public void testGetRetrievesPutValue() {
final String testKey = "brainy";
final Object testValue = new Object();
context.put(testKey, testValue);
assertEquals(testValue, context.get(testKey));
}