@Test public void testPeekAndPoll() { try { ClosableBlockingQueue<String> queue = new ClosableBlockingQueue<>(); assertNull(queue.peek()); assertNull(queue.peek()); assertNull(queue.poll()); assertNull(queue.poll()); assertEquals(0, queue.size()); queue.add("a"); queue.add("b"); queue.add("c"); assertEquals(3, queue.size()); assertEquals("a", queue.peek()); assertEquals("a", queue.peek()); assertEquals("a", queue.peek()); assertEquals(3, queue.size()); assertEquals("a", queue.poll()); assertEquals("b", queue.poll()); assertEquals(1, queue.size()); assertEquals("c", queue.peek()); assertEquals("c", queue.peek()); assertEquals("c", queue.poll()); assertEquals(0, queue.size()); assertNull(queue.poll()); assertNull(queue.peek()); assertNull(queue.peek()); assertTrue(queue.close()); try { queue.peek(); fail("should cause an exception"); } catch (IllegalStateException ignored) { // expected } try { queue.poll(); fail("should cause an exception"); } catch (IllegalStateException ignored) { // expected } } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
@Test public void testGetElementBlocking() { try { ClosableBlockingQueue<String> queue = new ClosableBlockingQueue<>(); assertNull(queue.getElementBlocking(1)); assertNull(queue.getElementBlocking(3)); assertNull(queue.getElementBlocking(2)); assertEquals(0, queue.size()); queue.add("a"); queue.add("b"); queue.add("c"); queue.add("d"); queue.add("e"); queue.add("f"); assertEquals(6, queue.size()); assertEquals("a", queue.getElementBlocking(99)); assertEquals("b", queue.getElementBlocking()); assertEquals(4, queue.size()); assertEquals("c", queue.getElementBlocking(0)); assertEquals("d", queue.getElementBlocking(1000000)); assertEquals("e", queue.getElementBlocking()); assertEquals("f", queue.getElementBlocking(1786598)); assertEquals(0, queue.size()); assertNull(queue.getElementBlocking(1)); assertNull(queue.getElementBlocking(3)); assertNull(queue.getElementBlocking(2)); assertTrue(queue.close()); try { queue.getElementBlocking(); fail("should cause an exception"); } catch (IllegalStateException ignored) { // expected } try { queue.getElementBlocking(1000000000L); fail("should cause an exception"); } catch (IllegalStateException ignored) { // expected } } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
@Test public void testCreateQueueHashCodeEquals() { try { ClosableBlockingQueue<String> queue1 = new ClosableBlockingQueue<>(); ClosableBlockingQueue<String> queue2 = new ClosableBlockingQueue<>(22); assertTrue(queue1.isOpen()); assertTrue(queue2.isOpen()); assertTrue(queue1.isEmpty()); assertTrue(queue2.isEmpty()); assertEquals(0, queue1.size()); assertEquals(0, queue2.size()); assertTrue(queue1.hashCode() == queue2.hashCode()); //noinspection EqualsWithItself assertTrue(queue1.equals(queue1)); //noinspection EqualsWithItself assertTrue(queue2.equals(queue2)); assertTrue(queue1.equals(queue2)); assertNotNull(queue1.toString()); assertNotNull(queue2.toString()); List<String> elements = new ArrayList<>(); elements.add("a"); elements.add("b"); elements.add("c"); ClosableBlockingQueue<String> queue3 = new ClosableBlockingQueue<>(elements); ClosableBlockingQueue<String> queue4 = new ClosableBlockingQueue<>(asList("a", "b", "c")); assertTrue(queue3.isOpen()); assertTrue(queue4.isOpen()); assertFalse(queue3.isEmpty()); assertFalse(queue4.isEmpty()); assertEquals(3, queue3.size()); assertEquals(3, queue4.size()); assertTrue(queue3.hashCode() == queue4.hashCode()); //noinspection EqualsWithItself assertTrue(queue3.equals(queue3)); //noinspection EqualsWithItself assertTrue(queue4.equals(queue4)); assertTrue(queue3.equals(queue4)); assertNotNull(queue3.toString()); assertNotNull(queue4.toString()); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
@Test public void testGetBatchBlocking() { try { ClosableBlockingQueue<String> queue = new ClosableBlockingQueue<>(); assertEquals(emptyList(), queue.getBatchBlocking(1)); assertEquals(emptyList(), queue.getBatchBlocking(3)); assertEquals(emptyList(), queue.getBatchBlocking(2)); queue.add("a"); queue.add("b"); assertEquals(asList("a", "b"), queue.getBatchBlocking(900000009)); queue.add("c"); queue.add("d"); assertEquals(asList("c", "d"), queue.getBatchBlocking()); assertEquals(emptyList(), queue.getBatchBlocking(2)); queue.add("e"); assertEquals(singletonList("e"), queue.getBatchBlocking(0)); queue.add("f"); assertEquals(singletonList("f"), queue.getBatchBlocking(1000000000)); assertEquals(0, queue.size()); assertEquals(emptyList(), queue.getBatchBlocking(1)); assertEquals(emptyList(), queue.getBatchBlocking(3)); assertEquals(emptyList(), queue.getBatchBlocking(2)); assertTrue(queue.close()); try { queue.getBatchBlocking(); fail("should cause an exception"); } catch (IllegalStateException ignored) { // expected } try { queue.getBatchBlocking(1000000000L); fail("should cause an exception"); } catch (IllegalStateException ignored) { // expected } } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }