First cut at server timing tests

editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/timing/TestGroup.java

Index: editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/timing/TestGroup.java
diff --git a/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/timing/TestGroup.java b/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/timing/TestGroup.java
new file mode 100644
index 0000000000000000000000000000000000000000..7f1bee0f654e1a4f1651663c58ba754cc2a98a9c
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/timing/TestGroup.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2014, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
+ * 
+ * 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 com.google.dart.server.timing;
+
+import java.io.PrintWriter;
+
+/**
+ * Instances of the class {@code TestGroup} represent objects that measure multiple ways of
+ * performing the same operation.
+ */
+public class TestGroup {
+  /**
+   * The name of the group.
+   */
+  private String name;
+
+  /**
+   * The tests that comprise the group.
+   */
+  TimingTest[] tests;
+
+  /**
+   * Initialize a newly created group
+   */
+  TestGroup(String name, TimingTest[] tests) {
+    this.name = name;
+    this.tests = tests;
+  }
+
+  /**
+   * Return the name of the group.
+   */
+  public String getName() {
+    return name;
+  }
+
+  /**
+   * Run all of the tests in this group, writing timing information to the given writer.
+   * 
+   * @param writer the writer to which results will be written.
+   */
+  public void runAll(PrintWriter writer) {
+    writer.println(name);
+    for (TimingTest test : tests) {
+      try {
+        TimingResult result = test.run();
+        int count = test.getTimingCount();
+        long time = result.getTotalTime();
+        writer.print("   ");
+        writer.print(test.getName());
+        writer.print(" : ");
+        writer.print(time);
+        writer.print(" (");
+        writer.print(result.getMinTime());
+        writer.print(", ");
+        writer.print(result.getAverageTime());
+        writer.print(", ");
+        writer.print(result.getMaxTime());
+        writer.print(", stdDev = ");
+        writer.print(Math.floor(result.getStandardDeviation() * 100.0) / 100.0);
+        writer.print(") for ");
+        writer.print(count);
+        writer.println(" iterations");
+      } catch (Exception exception) {
+        writer.print("   ");
+        writer.print(test.getName());
+        writer.print(" : ");
+        writer.println(exception.getMessage());
+        exception.printStackTrace(writer);
+      }
+    }
+    writer.println();
+  }
+}