1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936
|
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link rel="stylesheet" href="resources/doc.css" charset="UTF-8" type="text/css" />
<link rel="stylesheet" href="../coverage/jacoco-resources/prettify.css" charset="UTF-8" type="text/css" />
<link rel="shortcut icon" href="resources/report.gif" type="image/gif" />
<script type="text/javascript" src="../coverage/jacoco-resources/prettify.js"></script>
<title>JaCoCo - Ant Tasks</title>
</head>
<body onload="prettyPrint()">
<div class="breadcrumb">
<a href="../index.html" class="el_report">JaCoCo</a> >
<a href="index.html" class="el_group">Documentation</a> >
<span class="el_source">Ant Tasks</span>
</div>
<div id="content">
<h1>Ant Tasks</h1>
<p>
JaCoCo comes with Ant tasks to launch Java programs with execution recording
and for creating coverage reports from the recorded data. Execution data can
be collected and managed with the tasks
<a href="#coverage"><code>coverage</code></a>,
<a href="#agent"><code>agent</code></a>,
<a href="#dump"><code>dump</code></a> and
<a href="#merge"><code>merge</code></a>. Reports in different formats are
created with the <a href="#report"><code>report</code></a> task. For
<a href="offline.html">offline instrumentation</a> the task
<a href="#instrument"><code>instrument</code></a> can be used to prepare class
files.
</p>
<p class="hint">
If you want to have line number information included in the coverage reports
or you want source code highlighting the class files of the test target must
be compiled with debug information.
</p>
<h2>Example</h2>
<p>
The JaCoCo distribution contains a simple example how code coverage can be
added to a Ant based build. The
<a href="examples/build/build.xml">build script</a> compiles Java sources,
runs an simple Java program and creates a coverage report. The complete
example is located in the <code>./doc/examples/build</code> folder of the
distribution.
</p>
<h2>Prerequisites</h2>
<p>
The JaCoCo Ant tasks require
</p>
<ul>
<li>Ant 1.7.0 or higher and</li>
<li>Java 1.5 or higher (for both, the Ant runner and the test executor).</li>
</ul>
<p>All tasks are defined in <code>jacocoant.jar</code> (which is part of the
distribution) and can be included in your Ant scripts with the usual
<code>taskdef</code> declaration:
</p>
<pre class="source lang-xml linenums">
<project name="Example" xmlns:jacoco="antlib:org.jacoco.ant">
<taskdef uri="antlib:org.jacoco.ant" resource="org/jacoco/ant/antlib.xml">
<classpath path="<i>path_to_jacoco</i>/lib/jacocoant.jar"/>
</taskdef>
...
</project>
</pre>
<p>
Alternatively you might also place the <code>jacocoant.jar</code> in your
Ant <code><i>ANT_HOME</i>/lib</code> folder. If you use the name space URI
<code>antlib:org.jacoco.ant</code> for JaCoCo tasks Ant will find them
automatically without the <code>taskdef</code> declaration above.
</p>
<p class="hint">
Declaring an XML namespace for JaCoCo tasks is optional but always recommended
if you mix tasks from different libraries. All subsequent examples use the
<code>jacoco</code> prefix declared above. If you don't declare a separate
namespace the <code>jacoco</code> prefix must be removed from the following
examples.
</p>
<h2><a name="coverage">Task <code>coverage</code></a></h2>
<p>
The standard Ant tasks to launch Java programs are <code>java</code>, <code>junit</code> and
<code>testng</code>. To add code coverage recording to these tasks they can
simply be wrapped with the <code>coverage</code> task as shown in the
following examples:
</p>
<pre class="source lang-xml linenums">
<jacoco:coverage>
<java classname="org.jacoco.examples.HelloJaCoCo" fork="true">
<classpath>
<pathelement location="./bin"/>
</classpath>
</java>
</jacoco:coverage>
<jacoco:coverage>
<junit fork="true" forkmode="once">
<test name="org.jacoco.examples.HelloJaCoCoTest"/>
<classpath>
<pathelement location="./bin"/>
</classpath>
</junit>
</jacoco:coverage>
</pre>
<p>
Resulting coverage information is collected during execution and written
to a file when the process terminates. Note the <code>fork</code> attribute
above in the wrapped <code>java</code> task.
</p>
<p class="hint">
The nested task always has to declare <code>fork="true"</code>, otherwise the
<code>coverage</code> task can't record coverage information and will fail.
In addition the <code>junit</code> task should declare
<code>forkmode="once"</code> to avoid starting a new JVM for every single test
case and decreasing execution performance dramatically (unless this is
required by the nature of the test cases). Note that
<code>forkmode="perTest"</code> or <code>forkmode="perBatch"</code> should not
be combined with <code>append="false"</code> as the execution data file is
overwritten with the execution of every test.
</p>
<p>
The coverage task must wrap exactly one task. While it typically works without
any configuration, the behavior can be adjusted with some optional attributes:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>enabled</code></td>
<td>If set to <code>true</code> coverage data will be collected for the contained task.</td>
<td><code>true</code></td>
</tr>
<tr>
<td><code>destfile</code></td>
<td>Path to the output file for execution data.</td>
<td><code>jacoco.exec</code></td>
</tr>
<tr>
<td><code>append</code></td>
<td>If set to <code>true</code> and the execution data file already
exists, coverage data is appended to the existing file. If set to
<code>false</code>, an existing execution data file will be replaced.
</td>
<td><code>true</code></td>
</tr>
<tr>
<td><code>includes</code></td>
<td>A list of class names that should be included in execution analysis.
The list entries are separated by a colon (<code>:</code>) and
may use wildcard characters (<code>*</code> and <code>?</code>).
Except for performance optimization or technical corner cases this
option is normally not required.
</td>
<td><code>*</code> (all classes)</td>
</tr>
<tr>
<td><code>excludes</code></td>
<td>A list of class names that should be excluded from execution analysis.
The list entries are separated by a colon (<code>:</code>) and
may use wildcard characters (<code>*</code> and <code>?</code>).
Except for performance optimization or technical corner cases this
option is normally not required. If you want to exclude classes from
the report please configure the <code>report</code> task accordingly.
</td>
<td><i>empty</i> (no excluded classes)</td>
</tr>
<tr>
<td><code>exclclassloader</code></td>
<td>A list of class loader names, that should be excluded from execution
analysis. The list entries are separated by a colon
(<code>:</code>) and may use wildcard characters (<code>*</code> and
<code>?</code>). This option might be required in case of special
frameworks that conflict with JaCoCo code instrumentation, in
particular class loaders that do not have access to the Java runtime
classes.
</td>
<td><code>sun.reflect.DelegatingClassLoader</code></td>
</tr>
<tr>
<td><code>inclbootstrapclasses</code></td>
<td>Specifies whether also classes from the bootstrap classloader should
be instrumented. Use this feature with caution, it needs heavy
includes/excludes tuning.
</td>
<td><code>false</code></td>
</tr>
<tr>
<td><code>inclnolocationclasses</code></td>
<td>Specifies whether also classes without a source location should be
instrumented. Normally such classes are generated at runtime e.g. by
mocking frameworks and are therefore excluded by default.
</td>
<td><code>false</code></td>
</tr>
<tr>
<td><code>sessionid</code></td>
<td>A session identifier that is written with the execution data. Without
this parameter a random identifier is created by the agent.
</td>
<td><i>auto-generated</i></td>
</tr>
<tr>
<td><code>dumponexit</code></td>
<td>If set to <code>true</code> coverage data will be written on VM
shutdown.
</td>
<td><code>true</code></td>
</tr>
<tr>
<td><code>output</code></td>
<td>Output method to use for writing coverage data. Valid options are:
<ul>
<li><code>file</code>: At VM termination execution data is written to
the file specified in the <code>destfile</code> attribute.</li>
<li><code>tcpserver</code>: The agent listens for incoming connections
on the TCP port specified by the <code>address</code> and
<code>port</code> attribute. Execution data is written to this
TCP connection.</li>
<li><code>tcpclient</code>: At startup the agent connects to the TCP
port specified by the <code>address</code> and <code>port</code>
attribute. Execution data is written to this TCP connection.</li>
<li><code>none</code>: Do not produce any output.</li>
</ul>
</td>
<td><code>file</code></td>
</tr>
<tr>
<td><code>address</code></td>
<td>IP address or hostname to bind to when the output method is
<code>tcpserver</code> or connect to when the output method is
<code>tcpclient</code>. In <code>tcpserver</code> mode the value
"<code>*</code>" causes the agent to accept connections on any local
address.
</td>
<td><i>loopback interface</i></td>
</tr>
<tr>
<td><code>port</code></td>
<td>Port to bind to when the output method is <code>tcpserver</code> or
connect to when the output method is <code>tcpclient</code>. In
<code>tcpserver</code> mode the port must be available, which means
that if multiple JaCoCo agents should run on the same machine,
different ports have to be specified.
</td>
<td><code>6300</code></td>
</tr>
<tr>
<td><code>classdumpdir</code></td>
<td>Location relative to the working directory where all class files seen
by the agent are dumped to. This can be useful for debugging purposes
or in case of dynamically created classes for example when scripting
engines are used.
</td>
<td><i>no dumps</i></td>
</tr>
<tr>
<td><code>jmx</code></td>
<td>If set to <code>true</code> the agent exposes
<a href="./api/org/jacoco/agent/rt/IAgent.html">functionality</a> via
JMX under the name <code>org.jacoco:type=Runtime</code>.
</td>
<td><code>false</code></td>
</tr>
</tbody>
</table>
<h2><a name="agent">Task <code>agent</code></a></h2>
<p>
If the <code>coverage</code> task is not suitable for your launch target, you
might alternatively use the <code>agent</code> task to create the
<a href="agent.html">Java agent</a> parameter. The following example defines a
Ant property with the name <code>agentvmparam</code> that can be directly used
as a Java VM parameter:
</p>
<pre class="source lang-xml linenums">
<jacoco:agent property="agentvmparam"/>
</pre>
<p>
This task has the same attributes as the <code>coverage</code> task plus an
additional property to specify the target property name:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>enabled</code></td>
<td>When this variable is set to <code>false</code> the value of <code>property</code> will be set to an empty string, effectively
disabling coverage instrumentation for any tasks that used the value.</td>
<td><code>true</code></td>
</tr>
<tr>
<td><code>property</code></td>
<td>Name of the Ant property to set.</td>
<td><i>none (required)</i></td>
</tr>
<tr>
<td colspan="3"><i>All attributes of the <code>coverage</code> task.</i></td>
</tr>
</tbody>
</table>
<h2><a name="dump">Task <code>dump</code></a></h2>
<p>
This task allows to remotely collect execution data from another JVM without
stopping it. For example:
</p>
<pre class="source lang-xml linenums">
<jacoco:dump address="server.example.com" reset="true" destfile="remote.exec"/>
</pre>
<p>
Remote dumps are usefull for long running Java processes like application
servers.
</p>
<p class="hint">
The target JVM needs to have a <a href="agent.html">JaCoCo agent</a>
configured with <code>output</code> mode <code>tcpserver</code>. See
<a href="#coverage"><code>coverage</code></a> and
<a href="#agent"><code>agent</code></a> tasks above.
</p>
<p>
The <code>dump</code> task has the following attributes:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>address</code></td>
<td>Target IP address or DNS name.</td>
<td><code>localhost</code></td>
</tr>
<tr>
<td><code>port</code></td>
<td>Target TCP port.</td>
<td><code>6300</code></td>
</tr>
<tr>
<td><code>retryCount</code></td>
<td>Number of retries which the goal will attempt to establish a
connection. This can be used to wait until the target JVM is
successfully launched.</td>
<td><code>10</code></td>
</tr>
<tr>
<td><code>dump</code></td>
<td>Flag whether execution data should be dumped.</td>
<td><code>true</code></td>
</tr>
<tr>
<td><code>reset</code></td>
<td>Flag whether execution data should be reset in the target agent after
the dump.</td>
<td><code>false</code></td>
</tr>
<tr>
<td><code>destfile</code></td>
<td>File location to write the collected execution data to.</td>
<td><i>none (required if dump=true)</i></td>
</tr>
<tr>
<td><code>append</code></td>
<td>If set to <code>true</code> and the execution data file already
exists, coverage data is appended to the existing file. If set to
<code>false</code>, an existing execution data file will be replaced.
</td>
<td><code>true</code></td>
</tr>
</tbody>
</table>
<h2><a name="merge">Task <code>merge</code></a></h2>
<p>
This task can be used to merge the execution data from multiple test runs
into a single data store.
</p>
<pre class="source lang-xml linenums">
<jacoco:merge destfile="merged.exec">
<fileset dir="executionData" includes="*.exec"/>
</jacoco:merge>
</pre>
<p>
The task definition can contain any number of resource collection types and
has the following mandatory attribute:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>destfile</code></td>
<td>File location to write the merged execution data to.</td>
<td><i>none (required)</i></td>
</tr>
</tbody>
</table>
<h2><a name="report">Task <code>report</code></a></h2>
<p>
Finally different reports can be created with the <code>report</code> task.
A report task declaration consists of different sections, two specify the
input data, additional ones specify the output formats:
</p>
<pre class="source lang-xml linenums">
<jacoco:report>
<executiondata>
<file file="jacoco.exec"/>
</executiondata>
<structure name="Example Project">
<classfiles>
<fileset dir="classes"/>
</classfiles>
<sourcefiles encoding="UTF-8">
<fileset dir="src"/>
</sourcefiles>
</structure>
<html destdir="report"/>
</jacoco:report>
</pre>
<p>
As you can see from the example above the <code>report</code> task is based
on several nested elements:
</p>
<h3>Element <code>executiondata</code></h3>
<p>
Within this element Ant resources and resource collections can be specified,
that represent JaCoCo execution data files. If more than one execution data
file is specified, execution data is combined. A particular piece of code is
considered executed when it is marked as such in any of the input files.
</p>
<h3>Element <code>structure</code></h3>
<p>
This element defines the report structure. It might contain the following
nested elements:
</p>
<ul>
<li><code>classfiles</code>: Container element for Ant resources and resource
collections that can specify Java class files, archive files (jar, war, ear
etc. or Pack200) or folders containing class files. Archives and folders are
searched recursively for class files.</li>
<li><code>sourcefiles</code>: Optional container element for Ant resources and
resource collections that specify corresponding source files. If source
files are specified, some report formats include highlighted source code.
Source files can be specified as individual files or as source directories.</li>
</ul>
<p>
The <code>sourcefiles</code> element has these optional attributes:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>encoding</code></td>
<td>Character encoding of the source files.</td>
<td>Platform default encoding</td>
</tr>
<tr>
<td><code>tabwidth</code></td>
<td>Number of whitespace characters that represent a tab character.</td>
<td>4 characters</td>
</tr>
</tbody>
</table>
<p class="hint">
<b>Important:</b> Source file resources must always be specified relative to
the respective source folder. If directory resources are given, they must
directly point to source folders. Otherwise source lookup will not succeed.
</p>
<p>
Note that the <code>classfiles</code> and <code>sourcefiles</code> elements
accept any
<a href="http://ant.apache.org/manual/Types/resources.html#collection">Ant
resource collection</a>. Therefore also filtering the class file set is
possible and allows to narrow the scope of the report, for example:
</p>
<pre class="source lang-xml linenums">
<classfiles>
<fileset dir="classes">
<include name="org/jacoco/examples/important/**/*.class"/>
</fileset>
</classfiles>
</pre>
<p class="hint">
<b>Performance Warning:</b> Although it is technically possible and sometimes
convenient to use Ant's <code>zipfileset</code> to specify class or source
files, this resource type has poor performance characteristics and comes with
an huge memory overhead especially for large scale projects.
</p>
<p>
The structure can be refined with a hierarchy of <code>group</code> elements.
This way the coverage report can reflect different modules of a software
project. For each group element the corresponding class and source files can
be specified separately. For example:
</p>
<pre class="source lang-xml linenums">
<structure name="Example Project">
<group name="Server">
<classfiles>
<fileset dir="${workspace.dir}/org.jacoco.example.server/classes"/>
</classfiles>
<sourcefiles>
<fileset dir="${workspace.dir}/org.jacoco.example.server/src"/>
</sourcefiles>
</group>
<group name="Client">
<classfiles>
<fileset dir="${workspace.dir}/org.jacoco.example.client/classes"/>
</classfiles>
<sourcefiles>
<fileset dir="${workspace.dir}/org.jacoco.example.client/src"/>
</sourcefiles>
</group>
...
</structure>
</pre>
<p>
Both <code>structure</code> and <code>group</code> elements have the following
mandatory attribute:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>name</code></td>
<td>Name of the structure or group.</td>
<td><i>none (required)</i></td>
</tr>
</tbody>
</table>
<h3>Element <code>html</code></h3>
<p>
Create a multi-page report in HTML format. The report can either be written as
multiple files into a directory or compressed into a single ZIP file.
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>destdir</code></td>
<td>Directory to create the report in. Either this property or
<code>destfile</code> has to be supplied.</td>
<td><i>none (required)</i></td>
</tr>
<tr>
<td><code>destfile</code></td>
<td>Zip file to create the report in. Either this property or
<code>destdir</code> has to be supplied.</td>
<td><i>none (required)</i></td>
</tr>
<tr>
<td><code>footer</code></td>
<td>Footer text for each report page.</td>
<td><i>no footer</i></td>
</tr>
<tr>
<td><code>encoding</code></td>
<td>Character encoding of generated HTML pages.</td>
<td><code>UTF-8</code></td>
</tr>
<tr>
<td><code>locale</code></td>
<td>Locale specified as ISO code (en, fr, jp, ...) used for number
formatting. Locale country and variant can be separated with an underscore
(de_CH).</td>
<td><i>platform locale</i></td>
</tr>
</tbody>
</table>
<h3>Element <code>xml</code></h3>
<p>
Create a single-file report in XML format.
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>destfile</code></td>
<td>Location to write the report file to.</td>
<td><i>none (required)</i></td>
</tr>
<tr>
<td><code>encoding</code></td>
<td>Encoding of the generated XML document.</td>
<td><code>UTF-8</code></td>
</tr>
</tbody>
</table>
<h3>Element <code>csv</code></h3>
<p>
Create single-file report in CSV format.
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>destfile</code></td>
<td>Location to write the report file to.</td>
<td><i>none (required)</i></td>
</tr>
<tr>
<td><code>encoding</code></td>
<td>Encoding of the generated CSV document.</td>
<td><code>UTF-8</code></td>
</tr>
</tbody>
</table>
<h3>Element <code>check</code></h3>
<p>
This report type does not actually create a report. It checks coverage
counters and reports violations of configured rules. Every rule is applied to
elements of a given type (class, package, bundle, etc.) and has a list of
limits which are checked for every element. The following example checks that
for every package the line coverage is at least 80% and no class is missed:
</p>
<pre class="source lang-xml linenums">
<check>
<rule element="PACKAGE">
<limit counter="LINE" value="COVEREDRATIO" minimum="80%"/>
<limit counter="CLASS" value="MISSEDCOUNT" maximum="0"/>
</rule>
</check>
</pre>
<p>
The <code>check</code> element has the following attributes:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>rules</code></td>
<td>List of rules to check.</td>
<td><i>none</i></td>
</tr>
<tr>
<td><code>failonviolation</code></td>
<td>Specifies whether build should fail in case of rule violations.</td>
<td><code>true</code></td>
</tr>
<tr>
<td><code>violationsproperty</code></td>
<td>The name of an Ant property which is filled with the violation
messages.</td>
<td><i>none</i></td>
</tr>
</tbody>
</table>
<p>
Within the <code>check</code> element any number of <code>rule</code> elements
can be nested:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>element</code></td>
<td>The elements this rule applies to. Possible values are
<code>BUNDLE</code>, <code>PACKAGE</code>, <code>CLASS</code>,
<code>SOURCEFILE</code> and <code>METHOD</code>.</td>
<td><code>BUNDLE</code></td>
</tr>
<tr>
<td><code>includes</code></td>
<td>A list of element names that should be checked. The list entries are
separated by a colon (:) and may use wildcard characters (* and ?).</td>
<td><code>*</code></td>
</tr>
<tr>
<td><code>excludes</code></td>
<td>A list of element names that should not be checked. The list entries
are separated by a colon (:) and may use wildcard characters (* and ?).</td>
<td><i>empty (no excludes)</i></td>
</tr>
<tr>
<td><code>limits</code></td>
<td>List of limits to check.</td>
<td><i>none</i></td>
</tr>
</tbody>
</table>
<p>
Within the <code>rule</code> element any number of <code>limit</code> elements
can be nested:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>counter</code></td>
<td>The <a href="counters.html">counter</a> which should be checked.
Possible options are <code>INSTRUCTION</code>, <code>LINE</code>,
<code>BRANCH</code>, <code>COMPLEXITY</code>, <code>METHOD</code> and
<code>CLASS</code>.</td>
<td><code>INSTRUCTION</code></td>
</tr>
<tr>
<td><code>value</code></td>
<td>The counter value that should be checked. Possible options are
<code>TOTALCOUNT</code>, <code>MISSEDCOUNT</code>,
<code>COVEREDCOUNT</code>, <code>MISSEDRATIO</code> and
<code>COVEREDRATIO</code>.</td>
<td><code>COVEREDRATIO</code></td>
</tr>
<tr>
<td><code>minimum</code></td>
<td>Expected minimum value. If the minimum refers to a ratio it must be
in the range from 0.0 to 1.0 where the number of decimal places will
also determine the precision in error messages. A limit ratio may
optionally be declared as a percentage where 0.80 and 80% represent
the same value.</td>
<td><i>none</i></td>
</tr>
<tr>
<td><code>maximum</code></td>
<td>Expected maximum value, see <code>minimum</code> for details.</td>
<td><i>none</i></td>
</tr>
</tbody>
</table>
<h2><a name="instrument">Task <code>instrument</code></a></h2>
<p class="hint">
<b>Warning:</b> The preferred way for code coverage analysis with JaCoCo is
on-the-fly instrumentation. Offline instrumentation has several drawbacks and
should only be used if a specific scenario explicitly requires this mode.
Please consult <a href="offline.html">documentation</a> about offline
instrumentation before using this mode.
</p>
<p>
This task is used for <a href="offline.html">offline instrumentation</a> of
class files. The task takes a set of files and writes instrumented
versions to a specified location. The task takes any file type as input. Java
class files are instrumented. Archives (jar, war, ear etc. or Pack200) are
searched recursively for class files which then get instrumented. All other
files are copied without modification.
</p>
<pre class="source lang-xml linenums">
<jacoco:instrument destdir="target/classes-instr">
<fileset dir="target/classes" includes="**/*.class"/>
</jacoco:instrument>
</pre>
<p>
The task definition can contain any number of resource collection types and
has the following mandatory attribute:
</p>
<table class="coverage">
<thead>
<tr>
<td>Attribute</td>
<td>Description</td>
<td>Default</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>destdir</code></td>
<td>Directory location to write the instrumented files to.</td>
<td><i>none (required)</i></td>
</tr>
<tr>
<td><code>removesignatures</code></td>
<td>If set to <code>true</code> all signature related information is
stripped from JARs. This is typically necessary as instrumentation
breaks the signatures of the original class files.</td>
<td><code>true</code></td>
</tr>
</tbody>
</table>
</div>
<div class="footer">
<span class="right"><a href="${jacoco.home.url}">JaCoCo</a> ${qualified.bundle.version}</span>
<a href="license.html">Copyright</a> © ${copyright.years} Mountainminds GmbH & Co. KG and Contributors
</div>
</body>
</html>
|