Add tests for PollerAutoScalerOptions.java (#955)

Author: fimanishi

src/test/java/com/uber/cadence/internal/worker/PollerAutoScalerOptionsTest.java

@@ -0,0 +1,106 @@
+/**
+ * Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * <p>Modifications copyright (C) 2017 Uber Technologies, Inc.
+ *
+ * <p>Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file
+ * except in compliance with the License. A copy of the License is located at
+ *
+ * <p>http://aws.amazon.com/apache2.0
+ *
+ * <p>or in the "license" file accompanying this file. This file 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 com.uber.cadence.internal.worker;
+
+import static org.junit.Assert.*;
+
+import java.time.Duration;
+import org.junit.Test;
+
+public class PollerAutoScalerOptionsTest {
+  @Test
+  public void testNewBuilder() {
+    PollerAutoScalerOptions.Builder builder = PollerAutoScalerOptions.Builder.newBuilder();
+
+    assertNotNull(builder);
+  }
+
+  @Test
+  public void testNewBuilderWithOptions() {
+    PollerAutoScalerOptions.Builder builder = PollerAutoScalerOptions.Builder.newBuilder();
+    PollerAutoScalerOptions options = builder.build();
+
+    assertNotNull(options);
+    assertEquals(Duration.ofMinutes(1), options.getPollerScalingInterval());
+    assertEquals(1, options.getMinConcurrentPollers());
+    assertEquals(0.6f, options.getTargetPollerUtilisation(), 0.0);
+  }
+
+  @Test
+  public void testSetPollerScalingInterval() {
+    PollerAutoScalerOptions.Builder builder = PollerAutoScalerOptions.Builder.newBuilder();
+    builder.setPollerScalingInterval(Duration.ofMinutes(2));
+    PollerAutoScalerOptions options = builder.build();
+
+    assertNotNull(options);
+    assertEquals(Duration.ofMinutes(2), options.getPollerScalingInterval());
+    assertEquals(1, options.getMinConcurrentPollers());
+    assertEquals(0.6f, options.getTargetPollerUtilisation(), 0.0);
+  }
+
+  @Test
+  public void testSetMinConcurrentPollers() {
+    PollerAutoScalerOptions.Builder builder = PollerAutoScalerOptions.Builder.newBuilder();
+    builder.setMinConcurrentPollers(2);
+    PollerAutoScalerOptions options = builder.build();
+
+    assertNotNull(options);
+    assertEquals(Duration.ofMinutes(1), options.getPollerScalingInterval());
+    assertEquals(2, options.getMinConcurrentPollers());
+    assertEquals(0.6f, options.getTargetPollerUtilisation(), 0.0);
+  }
+
+  @Test
+  public void testSetTargetPollerUtilisation() {
+    PollerAutoScalerOptions.Builder builder = PollerAutoScalerOptions.Builder.newBuilder();
+    builder.setTargetPollerUtilisation(0.7f);
+    PollerAutoScalerOptions options = builder.build();
+
+    assertNotNull(options);
+    assertEquals(Duration.ofMinutes(1), options.getPollerScalingInterval());
+    assertEquals(1, options.getMinConcurrentPollers());
+    assertEquals(0.7f, options.getTargetPollerUtilisation(), 0.0);
+  }
+
+  @Test
+  public void testEquals() {
+    PollerAutoScalerOptions.Builder builder = PollerAutoScalerOptions.Builder.newBuilder();
+    builder.setPollerScalingInterval(Duration.ofMinutes(2));
+    builder.setMinConcurrentPollers(2);
+    builder.setTargetPollerUtilisation(0.7f);
+    PollerAutoScalerOptions options = builder.build();
+    PollerAutoScalerOptions options2 = builder.build();
+
+    assertTrue(options.equals(options));
+    assertFalse(options.equals(null));
+    assertTrue(options.equals(options2));
+  }
+
+  @Test
+  public void testHashCode() {
+    PollerAutoScalerOptions options = PollerAutoScalerOptions.Builder.newBuilder().build();
+
+    assertEquals(1058729812, options.hashCode());
+  }
+
+  @Test
+  public void testToString() {
+    PollerAutoScalerOptions options = PollerAutoScalerOptions.Builder.newBuilder().build();
+
+    assertEquals(
+        "PollerAutoScalerOptions{pollerScalingInterval=PT1M, minConcurrentPollers=1, targetPollerUtilisation=0.6}",
+        options.toString());
+  }
+}