@Test public void testRemove() { final DefaultThreadContextStack stack = createStack(); assertTrue(stack.containsAll(Arrays.asList("msg1", "msg2", "msg3"))); stack.remove("msg1"); assertEquals(2, stack.size()); assertTrue(stack.containsAll(Arrays.asList("msg2", "msg3"))); assertEquals("msg3", stack.peek()); stack.remove("msg3"); assertEquals(1, stack.size()); assertTrue(stack.containsAll(Arrays.asList("msg2"))); assertEquals("msg2", stack.peek()); }
@Test public void testTrim() { final DefaultThreadContextStack stack = createStack(); stack.trim(1); assertEquals(1, stack.size()); assertEquals("msg1", stack.peek()); }
@Test(expected = UnsupportedOperationException.class) public void testModifyingImmutableOrNullThrowsException() { final DefaultThreadContextStack stack = createStack(); final int originalSize = stack.size(); assertTrue(originalSize > 0); final ContextStack actual = stack.getImmutableStackOrNull(); assertEquals(originalSize, actual.size()); actual.pop(); }
@Test public void testRemoveAll() { final DefaultThreadContextStack stack = createStack(); stack.removeAll(Arrays.asList("msg1", "msg3")); assertEquals(1, stack.size()); assertFalse(stack.contains("msg1")); assertTrue(stack.contains("msg2")); assertFalse(stack.contains("msg3")); }
@Test public void testPopRemovesLastAddedItem() { final DefaultThreadContextStack stack = createStack(); assertEquals(3, stack.getDepth()); assertEquals("msg3", stack.pop()); assertEquals(2, stack.size()); assertEquals(2, stack.getDepth()); assertEquals("msg2", stack.pop()); assertEquals(1, stack.size()); assertEquals(1, stack.getDepth()); assertEquals("msg1", stack.pop()); assertEquals(0, stack.size()); assertEquals(0, stack.getDepth()); }
@Test public void testRetainAll() { final DefaultThreadContextStack stack = createStack(); stack.retainAll(Arrays.asList("msg1", "msg3")); assertEquals(2, stack.size()); assertTrue(stack.contains("msg1")); assertFalse(stack.contains("msg2")); assertTrue(stack.contains("msg3")); }
@Test public void testPushAndAddIncreaseStack() { final DefaultThreadContextStack stack = new DefaultThreadContextStack(true); stack.clear(); assertTrue(stack.isEmpty()); stack.push("msg1"); stack.add("msg2"); assertEquals(2, stack.size()); }
/** * @return */ static DefaultThreadContextStack createStack() { final DefaultThreadContextStack stack = new DefaultThreadContextStack(true); stack.clear(); assertTrue(stack.isEmpty()); stack.push("msg1"); stack.add("msg2"); stack.push("msg3"); assertEquals(3, stack.size()); return stack; }
@Test public void testDoesNothingIfConstructedWithUseStackIsFalse() { final DefaultThreadContextStack stack = new DefaultThreadContextStack(false); stack.clear(); assertTrue(stack.isEmpty()); stack.push("msg"); // nothing was added assertTrue(stack.isEmpty()); assertEquals(0, stack.size()); }
@Test public void testAddAll() { final DefaultThreadContextStack stack = createStack(); stack.addAll(Arrays.asList("msg4", "msg5")); assertEquals(5, stack.size()); assertTrue(stack.contains("msg1")); assertTrue(stack.contains("msg2")); assertTrue(stack.contains("msg3")); assertTrue(stack.contains("msg4")); assertTrue(stack.contains("msg5")); }
@Test public void testPeekReturnsLastAddedItem() { final DefaultThreadContextStack stack = new DefaultThreadContextStack(true); stack.clear(); assertTrue(stack.isEmpty()); stack.push("msg1"); stack.add("msg2"); assertEquals(2, stack.size()); assertEquals("msg2", stack.peek()); stack.push("msg3"); assertEquals("msg3", stack.peek()); }
@Test public void testCopy() { final DefaultThreadContextStack stack = createStack(); final ThreadContextStack copy = stack.copy(); assertEquals(3, copy.size()); assertTrue(copy.containsAll(Arrays.asList("msg1", "msg2", "msg3"))); // clearing stack does not affect copy stack.clear(); assertTrue(stack.isEmpty()); assertEquals(3, copy.size()); // not affected assertTrue(copy.containsAll(Arrays.asList("msg1", "msg2", "msg3"))); // adding to copy does not affect stack copy.add("other"); assertEquals(4, copy.size()); // not affected assertTrue(stack.isEmpty()); // adding to stack does not affect copy stack.push("newStackMsg"); assertEquals(1, stack.size()); assertEquals(4, copy.size()); // not affected // clearing copy does not affect stack copy.clear(); assertTrue(copy.isEmpty()); assertEquals(1, stack.size()); }