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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.plugin.surefire.report;
20  
21  import java.text.NumberFormat;
22  import java.util.Locale;
23  
24  /**
25   * Utility for reporter classes.
26   *
27   * @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a>
28   * @since 2.19
29   */
30  final class ReporterUtils {
31      private static final int MS_PER_SEC = 1000;
32  
33      private ReporterUtils() {
34          throw new IllegalStateException("non instantiable constructor");
35      }
36  
37      static String formatElapsedTime(double runTime) {
38          NumberFormat numberFormat = NumberFormat.getInstance(Locale.ENGLISH);
39          numberFormat.setGroupingUsed(true);
40          numberFormat.setMinimumFractionDigits(0);
41          numberFormat.setMaximumFractionDigits(3);
42          return numberFormat.format(runTime / MS_PER_SEC);
43      }
44  }