missing queue class and test

sentry/src/main/java/io/sentry/DisabledQueue.java

@@ -0,0 +1,100 @@
+package io.sentry;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import java.io.Serializable;
+import java.util.AbstractCollection;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.Queue;
+
+final class DisabledQueue <E> extends AbstractCollection<E> implements Queue<E>, Serializable {
+
+  /** Serialization version. */
+  private static final long serialVersionUID = -8423413834657610417L;
+
+  /** Constructor that creates a queue that does not accept any element. */
+  public DisabledQueue() { }
+
+  // -----------------------------------------------------------------------
+  /**
+   * Returns the number of elements stored in the queue.
+   *
+   * @return this queue's size
+   */
+  @Override
+  public int size() { return 0; }
+
+  /**
+   * Returns true if this queue is empty; false otherwise.
+   *
+   * @return false
+   */
+  @Override
+  public boolean isEmpty() { return false; }
+
+  /** Does nothing. */
+  @Override
+  public void clear() { }
+
+  /**
+   * Since the queue is disabled, the element will not be added.
+   *
+   * @param element the element to add
+   * @return false, always
+   */
+  @Override
+  public boolean add(final @NotNull E element) { return false; }
+
+  // -----------------------------------------------------------------------
+
+  /**
+   * Receives an element but do nothing with it.
+   *
+   * @param element the element to add
+   * @return false, always
+   */
+  @Override
+  public boolean offer(@NotNull E element) {
+    return false;
+  }
+
+  @Override
+  public @Nullable E poll() { return null; }
+
+  @Override
+  public @Nullable E element() { return null; }
+
+  @Override
+  public @Nullable E peek() { return null; }
+
+  @Override
+  public @NotNull E remove() { throw new NoSuchElementException("queue is disabled"); }
+
+  // -----------------------------------------------------------------------
+
+  /**
+   * Returns an iterator over this queue's elements.
+   *
+   * @return an iterator over this queue's elements
+   */
+  @Override
+  public @NotNull Iterator<E> iterator() {
+    return new Iterator<E>() {
+
+      @Override
+      public boolean hasNext() {
+        return false;
+      }
+
+      @Override
+      public E next() {
+        throw new NoSuchElementException();
+      }
+
+      @Override
+      public void remove() {
+          throw new IllegalStateException();
+        }
+    };
+  }
+}

sentry/src/test/java/io/sentry/DisabledQueueTest.kt

@@ -0,0 +1,93 @@
+package io.sentry
+import org.junit.Assert.assertThrows
+import java.util.NoSuchElementException
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertNull
+
+class DisabledQueueTest {
+
+    @Test
+    fun `size starts empty`() {
+        val queue = DisabledQueue<Int>()
+        assertEquals(0, queue.size, "Size should always be zero.")
+    }
+
+    @Test
+    fun `add does not add elements`() {
+        val queue = DisabledQueue<Int>()
+        assertFalse(queue.add(1), "add should always return false.")
+        assertEquals(0, queue.size, "Size should still be zero after attempting to add an element.")
+    }
+
+    @Test
+    fun `isEmpty returns false when created`() {
+        val queue = DisabledQueue<Int>()
+        assertFalse(queue.isEmpty(), "isEmpty should always return false.")
+    }
+
+    @Test
+    fun `isEmpty always returns false if add function was called`() {
+        val queue = DisabledQueue<Int>()
+        queue.add(1);
+
+        assertFalse(queue.isEmpty(), "isEmpty should always return false.")
+    }
+
+    @Test
+    fun `offer does not add elements`() {
+        val queue = DisabledQueue<Int>()
+        assertFalse(queue.offer(1), "offer should always return false.")
+        assertEquals(0, queue.size, "Size should still be zero after attempting to offer an element.")
+    }
+
+    @Test
+    fun `poll returns null`() {
+        val queue = DisabledQueue<Int>()
+        queue.add(1);
+        assertNull(queue.poll(), "poll should always return null.")
+    }
+
+    @Test
+    fun `peek returns null`() {
+        val queue = DisabledQueue<Int>()
+        queue.add(1);
+
+        assertNull(queue.peek(), "peek should always return null.")
+    }
+
+    @Test
+    fun `element returns null`() {
+        val queue = DisabledQueue<Int>()
+        assertNull(queue.element(), "element should always return null.")
+    }
+
+    @Test
+    fun `remove throws NoSuchElementException`() {
+        val queue = DisabledQueue<Int>()
+        assertThrows(NoSuchElementException::class.java) { queue.remove() }
+    }
+
+    @Test
+    fun `clear does nothing`() {
+        val queue = DisabledQueue<Int>()
+        queue.clear() // Should not throw an exception
+        assertEquals(0, queue.size, "Size should remain zero after clear.")
+    }
+
+    @Test
+    fun `iterator has no elements`() {
+        val queue = DisabledQueue<Int>()
+        val iterator = queue.iterator()
+        assertFalse(iterator.hasNext(), "Iterator should have no elements.")
+        assertThrows(NoSuchElementException::class.java) { iterator.next() }
+    }
+
+    @Test
+    fun `iterator remove throws IllegalStateException`() {
+        val queue = DisabledQueue<Int>()
+        val iterator = queue.iterator()
+        assertThrows(IllegalStateException::class.java) { iterator.remove() }
+    }
+}