| Marc R. Hoffmann | f7d1752 | 2009-08-07 11:21:23 +0000 | [diff] [blame] | 1 | <?xml version="1.0" encoding="ISO-8859-1" ?>
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| 4 | <head>
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| 6 | <link rel="stylesheet" href=".resources/doc.css" charset="ISO-8859-1" type="text/css" />
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| 7 | <title>JaCoCo - Ant Tasks</title>
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| 8 | </head>
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| 9 | <body>
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| 10 |
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| 11 | <div class="breadcrumb">
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| 12 | <a href="../index.html" class="el_session">JaCoCo</a> >
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| 13 | <a href="index.html" class="el_group">Documentation</a> >
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| 14 | <span class="el_source">Ant Tasks</span>
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| 15 | </div>
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| 16 |
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| 17 | <h1>Ant Tasks</h1>
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| 18 |
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| 19 | <p>
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| 20 | JaCoCo comes with Ant tasks to launch Java programs with execution recording
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| 21 | and for creating coverage reports from the recorded data. All tasks are
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| 22 | defined in <code>jacocoant.jar</code> and can be included in your Ant scripts
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| 23 | with the usual <code>taskdef</code> declaration:
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| 24 | </p>
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| 25 |
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| 26 | <pre class="source">
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| 27 | <span class="nr"> 1</span><project name="Example" xmlns:jacoco="antlib:org.jacoco.ant">
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| 28 | <span class="nr"> 2</span>
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| 29 | <span class="nr"> 3</span> <taskdef uri="antlib:org.jacoco.ant" resource="org/jacoco/ant/antlib.xml">
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| 30 | <span class="nr"> 4</span> <classpath>
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| 31 | <span class="nr"> 5</span> <file file="<i>path_to_jacoco</i>/lib/jacocoant.jar"/>
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| 32 | <span class="nr"> 6</span> </classpath>
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| 33 | <span class="nr"> 7</span> </taskdef>
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| 34 | <span class="nr"> 8</span>
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| 35 | <span class="nr"> 9</span> ...
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| 36 | <span class="nr"> 10</span>
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| 37 | <span class="nr"> 11</span></project>
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| 38 | </pre>
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| 39 |
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| 40 | <p>
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| 41 | Declaring a XML namespace for JaCoCo tasks is optional but always recommended
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| 42 | if you mix tasks from different libraries. All subsequent examples use the
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| 43 | <code>jacoco</code> prefix declared above.
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| 44 | </p>
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| 45 |
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| 46 |
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| 47 | <h2>Task <code>coverage</code></h2>
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| 48 |
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| 49 | <p>
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| 50 | The standard Ant tasks to launch Java programs are <code>java</code> and
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| 51 | <code>junit</code>. To add code coverage recording to these tasks they can
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| 52 | simply be wrapped with the <code>coverage</code> task as shown in the
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| 53 | following examples:
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| 54 | </p>
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| 55 |
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| 56 | <pre class="source">
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| 57 | <span class="nr"> 1</span><jacoco:coverage>
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| 58 | <span class="nr"> 2</span> <java classname="org.jacoco.examples.HelloJaCoCo" fork="true">
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| 59 | <span class="nr"> 3</span> <classpath>
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| 60 | <span class="nr"> 4</span> <pathelement location="./bin"/>
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| 61 | <span class="nr"> 5</span> </classpath>
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| 62 | <span class="nr"> 6</span> </java>
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| 63 | <span class="nr"> 7</span></jacoco:coverage>
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| 64 | <span class="nr"> 8</span>
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| 65 | <span class="nr"> 9</span>
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| 66 | <span class="nr"> 10</span><jacoco:coverage>
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| 67 | <span class="nr"> 11</span> <junit fork="true" forkmode="once">
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| 68 | <span class="nr"> 12</span> <test name="org.jacoco.examples.HelloJaCoCoTest"/>
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| 69 | <span class="nr"> 13</span> <classpath>
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| 70 | <span class="nr"> 14</span> <pathelement location="./bin"/>
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| 71 | <span class="nr"> 15</span> </classpath>
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| 72 | <span class="nr"> 16</span> </junit>
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| 73 | <span class="nr"> 17</span></jacoco:coverage>
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| 74 | </pre>
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| 75 |
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| 76 | <p>
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| 77 | As a result coverage information is collected during execution and written
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| 78 | to a file when the process terminates. Note the <code>fork</code> attribute in
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| 79 | wrapped <code>java</code> task.
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| 80 | </p>
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| 81 |
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| 82 | <p class="hint">
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| 83 | The nested task always has to declare <code>fork="true"</code>, otherwise the
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| 84 | <code>coverage</code> task can't record coverage information and will fail.
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| 85 | In addition the <code>junit</code> task should declare
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| 86 | <code>forkmode="once"</code> to avoid starting a new JVM for every single test
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| 87 | case and decreasing execution performance dramatically (unless this is
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| 88 | required by the nature of the test cases).
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| 89 | </p>
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| 90 |
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| 91 | <p>
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| 92 | The coverage task must wrap exactly one task. While it typically works without
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| 93 | any configuration, the behavior can be adjusted with some optional attributes:
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| 94 | </p>
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| 95 |
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| 96 | <table class="coverage">
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| 97 | <thead>
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| 98 | <tr>
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| 99 | <td>Attribute</td>
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| 100 | <td>Description</td>
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| 101 | <td>Default</td>
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| 102 | </tr>
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| 103 | </thead>
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| 104 | <tbody>
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| 105 | <tr>
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| 106 | <td><code>file</code></td>
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| 107 | <td>Path to the output file for execution data.</td>
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| 108 | <td><code>jacoco.exec</code></td>
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| 109 | </tr>
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| 110 | <tr>
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| 111 | <td><code>merge</code></td>
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| 112 | <td>If set to <code>true</code> and the execution data file already
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| 113 | exists, coverage data is merged to the existing file. If set to
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| 114 | <code>false</code>, an existing execution data file will be replaced.
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| 115 | </td>
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| 116 | <td><code>true</code></td>
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| 117 | </tr>
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| 118 | <tr>
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| 119 | <td><code>exclclassloader</code></td>
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| 120 | <td>A whitespace separated list of class loader names, that should be
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| 121 | excluded from execution analysis. The list entries may use wildcard
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| 122 | characters. This option might be required in case of special
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| 123 | frameworks that conflict with JaCoCo code instrumentation, e.g. class
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| 124 | loaders that do not have access to the Java runtime classes.
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| 125 | </td>
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| 126 | <td><code>sun.reflect.DelegatingClassLoader</code></td>
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| 127 | </tr>
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| 128 | </tbody>
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| 129 | </table>
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| 130 |
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| 131 |
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| 132 | <h2>Task <code>agent</code></h2>
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| 133 |
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| Marc R. Hoffmann | d519add | 2009-08-11 11:09:29 +0000 | [diff] [blame^] | 134 | <p>
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| 135 | If the <code>coverage</code> task is not suitable for your launch target, you
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| 136 | might alternatively use the <code>agent</code> task to create the Java agent
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| 137 | parameter. The following example defines a Ant property with the name
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| 138 | <code>agentvmparam</code> that can be directly used as Java VM parameter:
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| 139 | </p>
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| 140 |
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| 141 | <pre class="source">
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| 142 | <span class="nr"> 1</span><jacoco:agent property="agentvmparam"/>
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| 143 | </pre>
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| 144 |
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| 145 | <p>
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| 146 | This task has the same attributes as the <code>coverage</code> task plus an
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| 147 | additional property to specify the target property name:
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| 148 | </p>
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| 149 |
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| 150 | <table class="coverage">
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| 151 | <thead>
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| 152 | <tr>
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| 153 | <td>Attribute</td>
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| 154 | <td>Description</td>
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| 155 | <td>Default</td>
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| 156 | </tr>
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| 157 | </thead>
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| 158 | <tbody>
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| 159 | <tr>
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| 160 | <td><code>property</code></td>
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| 161 | <td>Name of the Ant property to set.</td>
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| 162 | <td><i>none (required)</i></td>
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| 163 | </tr>
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| 164 | </tbody>
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| 165 | </table>
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| 166 |
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| Marc R. Hoffmann | f7d1752 | 2009-08-07 11:21:23 +0000 | [diff] [blame] | 167 | <h2>Task <code>report</code></h2>
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| 168 |
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| 169 |
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| 170 | <div class="footer">
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| 171 | <div class="versioninfo"><a href="@HOMEURL@">JaCoCo</a> @VERSION@</div>
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| 172 | <a href="license.html">Copyright</a> © 2009 Mountainminds GmbH & Co. KG and Contributors
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| 173 | </div>
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| 174 |
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| 175 | </body>
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| 176 | </html> |