Question

我有以下脚本：

<?xml version="1.0" encoding="UTF-8"?>

<taskdef resource="emma_ant.properties">
    <classpath>            
        <pathelement location="lib/emma.jar" />
        <pathelement location="lib/emma_ant.jar" />
    </classpath>
</taskdef>

<target name="compile">
    <mkdir dir="build"/> <!-- vytvori adresar build -->
    <mkdir dir="build/classes"/>
    <mkdir dir="build/test"/>
    <javac destdir="build/classes" srcdir="src" debug="true" /> <!-- prelozi zdrojove kody -->
    <javac destdir="build/test" srcdir="test"> <!-- prelozi testy -->
        <classpath> <!-- pro prelozeni testu je potreba junit a prelozena aplikace -->
            <pathelement location="lib/junit-4.5.jar" />
            <pathelement location="build/classes" />
        </classpath>
    </javac>
</target>

<target name="build" depends="compile">
    <jar destfile="tetris.jar" basedir="build/classes"> <!-- zabali aplikaci do jaru -->
        <manifest>
            <attribute name="Main-Class" value="tetris.Main"/>
            <attribute name="Class-Path" value="lib/mysql-connector-java-5.1.6-bin.jar lib/derbyclient.jar"/>
        </manifest>
    </jar>
</target>

<target name="jar" depends="build"></target>

<target name="run" depends="compile">
    <java classname="tetris.Main" classpath="build/classes">  <!-- spusti aplikaci -->
        <classpath>
            <pathelement location="lib/mysql-connector-java-5.1.6-bin.jar" />
            <pathelement location="lib/derbyclient.jar" />
        </classpath>
    </java>
</target>

<target name="instrument" depends="compile">
    <mkdir dir="build/instrumented"/>

    <emma verbosity="verbose"> <!-- vytvori tridy upravene pro sledovani coverage -->
        <instr instrpath="build/classes"
                destdir="build/instrumented"
                metadatafile="build/metadata.emma"
                merge="true" />
    </emma>
</target>

<target name="test" depends="instrument">
    <mkdir dir="reports" />
    <mkdir dir="reports/junit" />

    <junit printsummary="yes" haltonfailure="no" fork="true"> <!-- pusti JUnit testy -->
        <classpath>
            <pathelement location="build/test" />
            <pathelement location="build/classes" />
            <pathelement location="build/instrumented" />
            <pathelement location="lib/junit-4.5.jar" />
            <pathelement location="lib/emma.jar" />
            <pathelement location="lib/emma_ant.jar" />
        </classpath>

        <formatter usefile="false" type="brief" />
        <formatter type="plain"/>

        <batchtest fork="yes" todir="reports/junit"> <!-- reporty budou v adresari reports/junit -->
            <fileset dir="test">
                <include name="**/TetrisSuite.java"/>
            </fileset>
        </batchtest>
        <jvmarg value="-Demma.coverage.out.file=build/coverage.emma"/>
        <jvmarg value="-Demma.coverage.out.merge=true" />
    </junit>

    <emma enabled="true" verbosity="verbose"> <!-- vygeneruje report emmy -->
        <report sourcepath="src">
            <fileset dir="build" includes="*.emma" />

            <html outfile="reports/coverage.html" />
        </report>
    </emma>
</target>

<target name="clean">
    <delete dir="build"/> <!-- smaze adresar build -->
    <delete dir="reports"/>
    <delete file="tetris.jar"/>
</target>

输出此消息：

processing input file [...NetBeansProjects/Tetris3/build/metadata.emma] ...
  loaded 25 metadata entries
1 file(s) read and merged in 5 ms
nothing to do: no runtime coverage data found in any of the data files

有什么问题以及如何解决？

Answer 1

看起来你正在接受非仪表化课程。

可能是因为classpath任务中的junit具有已检测（build/classes）的已编译类（build/instrumented）提前。也许在那个类路径中反转这些？

修改

我下载了emma并设置了一个包含一个源类和一个测试类的基本项目。我尝试使用问题中提供的构建来运行它。我做的唯一改变是将身体包裹在<project>中，test作为默认目标。在运行时，我在问题中得到了类似的信息：

[report] processing input file [/Users/mjc/stack_overflow/emma/build/metadata.emma] ... [report] loaded 1 metadata entries [report] 1 file(s) read and merged in 6 ms [report] nothing to do: no runtime coverage data found in any of the data files

然后我设置了junit类路径，将检测的类放在vanilla之前：

<classpath> <pathelement location="build/test" /> <pathelement location="build/instrumented" /> <pathelement location="build/classes" /> <pathelement location="lib/junit.jar" /> <pathelement location="lib/emma.jar" /> <pathelement location="lib/emma_ant.jar" /> </classpath>

并且重申：

[report] processing input file [/Users/mjc/stack_overflow/emma/build/coverage.emma] ... [report] loaded 1 coverage data entries [report] processing input file [/Users/mjc/stack_overflow/emma/build/metadata.emma] ... [report] loaded 1 metadata entries [report] 2 file(s) read and merged in 4 ms [report] merged metadata contains 1 entries [report] merged coverage data contains 1 entries [report] writing [html] report to [/Users/mjc/stack_overflow/emma/reports/coverage.html] ... [report] report: processing package [default package] ...

看起来像是为我修好了。我进行了一次测试：

[junit] Running SoTest [junit] Testsuite: SoTest [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.081 sec [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.081 sec [junit] [junit] ------------- Standard Output --------------- [junit] EMMA: collecting runtime coverage data ... [junit] ------------- ---------------- ---------------

如果您在ant输出中没有看到任何类似的行，那么您可能没有符合**/TetrisSuite.java模式的测试？

如何使用EMMA代码覆盖更改Ant脚本，以便它可以找到运行时覆盖数据？

1 个答案: