openecomp-be/lib/openecomp-core-lib/openecomp-nosqldb-lib/openecomp-nosqldb-core/src/test/java/org/openecomp/core/nosqldb/util/ConfigurationManagerTest.java

   1 /*
   2  * Copyright © 2016-2018 European Support Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.openecomp.core.nosqldb.util;
  18
  19 import static org.hamcrest.core.StringContains.containsString;
  20 import static org.junit.Assert.assertNotNull;
  21
  22 import java.io.Closeable;
  23 import java.io.IOException;
  24 import java.lang.reflect.Field;
  25 import org.junit.Before;
  26 import org.junit.Rule;
  27 import org.junit.Test;
  28 import org.junit.rules.ExpectedException;
  29
  30 /**
  31  * @author EVITALIY
  32  * @since 22 Oct 17
  33  */
  34 public class ConfigurationManagerTest {
  35
  36     @Rule
  37     public ExpectedException expectedException = ExpectedException.none();
  38
  39     private static final String NON_EXISTENT = "unexistentfile";
  40
  41     @Before
  42     public void resetInstance() throws NoSuchFieldException, IllegalAccessException {
  43         Field field = ConfigurationManager.class.getDeclaredField("instance");
  44         field.setAccessible(true);
  45         field.set(null, null);
  46     }
  47
  48     @Test
  49     public void testGetInstanceSystemProperty() throws Throwable {
  50
  51         expectedException.expect(IOException.class);
  52         expectedException.expectMessage(containsString(NON_EXISTENT));
  53
  54         try (ConfigurationSystemPropertyUpdater updater = new ConfigurationSystemPropertyUpdater(NON_EXISTENT)) {
  55             ConfigurationManager.getInstance();
  56         } catch (RuntimeException e) {
  57             Throwable cause = e.getCause();
  58             throw cause == null ? e : cause;
  59         }
  60     }
  61
  62     @Test()
  63     public void testGetInstanceDefault() {
  64
  65         try (ConfigurationSystemPropertyUpdater property = new ConfigurationSystemPropertyUpdater()) {
  66             ConfigurationManager manager = ConfigurationManager.getInstance();
  67             assertNotNull(manager.getUsername());
  68         }
  69     }
  70
  71
  72     private static class ConfigurationSystemPropertyUpdater implements Closeable {
  73
  74         private final String oldValue;
  75
  76         private ConfigurationSystemPropertyUpdater(String value) {
  77             this.oldValue = System.getProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
  78             System.setProperty(ConfigurationManager.CONFIGURATION_YAML_FILE, value);
  79         }
  80
  81         private ConfigurationSystemPropertyUpdater() {
  82             this.oldValue = System.getProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
  83             System.clearProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
  84         }
  85
  86         @Override
  87         public void close() {
  88
  89             if (oldValue == null) {
  90                 System.clearProperty(ConfigurationManager.CONFIGURATION_YAML_FILE);
  91             } else {
  92                 System.setProperty(ConfigurationManager.CONFIGURATION_YAML_FILE, oldValue);
  93             }
  94         }
  95     }
  96 }