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Used mockito to replicate SQLException while closing connection to show use of loggedMute
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‎mute-idiom/pom.xml

Lines changed: 37 additions & 45 deletions
Original file line numberDiff line numberDiff line change
@@ -1,47 +1,39 @@
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<?xml version="1.0"?>
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<!--
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The MIT License
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Copyright (c) 2014 Ilkka Seppälä
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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-->
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<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.iluwatar</groupId>
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<artifactId>java-design-patterns</artifactId>
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<version>1.11.0-SNAPSHOT</version>
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</parent>
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<artifactId>mute-idiom</artifactId>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<!-- The MIT License Copyright (c) 2014 Ilkka Seppälä Permission is hereby
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granted, free of charge, to any person obtaining a copy of this software
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and associated documentation files (the "Software"), to deal in the Software
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without restriction, including without limitation the rights to use, copy,
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modify, merge, publish, distribute, sublicense, and/or sell copies of the
7+
Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions: The above copyright notice and this
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permission notice shall be included in all copies or substantial portions
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of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE. -->
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<project
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
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xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.iluwatar</groupId>
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<artifactId>java-design-patterns</artifactId>
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<version>1.11.0-SNAPSHOT</version>
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</parent>
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<artifactId>mute-idiom</artifactId>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<scope>compile</scope>
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</dependency>
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</dependencies>
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</project>

‎mute-idiom/src/main/java/com/iluwatar/mute/App.java

Lines changed: 9 additions & 3 deletions
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@@ -22,6 +22,9 @@
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*/
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package com.iluwatar.mute;
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import static org.mockito.Mockito.doThrow;
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import static org.mockito.Mockito.mock;
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import java.io.ByteArrayOutputStream;
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import java.sql.Connection;
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import java.sql.SQLException;
@@ -46,8 +49,9 @@ private static void useOfMute() {
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}
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private static void useOfLoggedMute() {
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Connection connection = openConnection();
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Connection connection = null;
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try {
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connection = openConnection();
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readStuff(connection);
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} catch (SQLException ex) {
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ex.printStackTrace();
@@ -71,7 +75,9 @@ private static void readStuff(Connection connection) throws SQLException {
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}
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}
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private static Connection openConnection() {
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return null;
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private static Connection openConnection() throws SQLException {
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Connection mockedConnection = mock(Connection.class);
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doThrow(SQLException.class).when(mockedConnection).close();
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return mockedConnection;
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}
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}

‎mute-idiom/src/main/java/com/iluwatar/mute/Mute.java

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -50,8 +50,8 @@ public static void mute(CheckedRunnable runnable) {
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/**
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* Executes the <code>runnable</code> and logs the exception occurred on {@link System#err}.
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* This method should be utilized to mute the operations about which most you can do is log.
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* For instance while closing a connection to database, all you can do is log the exception
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* occurred.
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* For instance while closing a connection to database, or cleaning up a resource,
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* all you can do is log the exception occurred.
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*
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* @param runnable a runnable that may throw an exception on execution.
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*/

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