Added unit-test/example

test/dorkbox/objectPool/BlockingTest.kt

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2020 dorkbox, llc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package dorkbox.objectPool
 
 import kotlinx.coroutines.runBlocking
@@ -57,8 +72,12 @@ class BlockingTest {
             val take1 = pool.take()
             val take2 = pool.take()
             val take3 = pool.take()
-            val take4 = pool.take() // this suspends
-            Assert.fail("shouldn't get here")
+//            val take4 = pool.take() // this suspends
+//            Assert.fail("shouldn't get here")
+
+            pool.put(take3)
+
+            Assert.assertTrue(pool.take() === take3)
         }
     }
 }