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Editing: build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="guzzle" default="test">
    
    <property file="phing/build.properties.dist" override="true" />
    <property file="phing/build.properties" override="true" />

<property name="dir.output" value="${project.basedir}/build/artifacts" />
    <property name="dir.imports" value="${project.basedir}/phing/imports" />
    <property name="dir.bin" value="${project.basedir}/bin" />
    <property name="repo.dir" value="${project.basedir}" />

<import file="${dir.imports}/dependencies.xml"/>
    <import file="${dir.imports}/deploy.xml"/>

<target name="composer-lint" description="lint-check composer.json only">
        <composerlint dir="${project.basedir}/src" file="{$project.basedir}/composer.json" />
    </target>

<target name="test" description="Run unit tests">
        <exec passthru="true" command="vendor/bin/phpunit" checkReturn="true" />
    </target>

<target name="build-init" description="Initialize local phing properties">
        <copy file="phing/build.properties.dist" tofile="phing/build.properties" overwrite="false" />
    </target>

<target name="clean">
        <delete dir="${dir.output}"/>
        <delete dir="${project.basedir}/build/pearwork"/>
    </target>

<target name="prepare" depends="clean,build-init">
        <mkdir dir="${dir.output}"/>
        <mkdir dir="${dir.output}/logs" />
    </target>

<target name="coverage" depends="prepare">
        <exec passthru="true" command="vendor/bin/phpunit --coverage-html=${dir.output}/coverage" />
    </target>

<target name="view-coverage">
        <exec passthru="true" command="open ${dir.output}/coverage/index.html" />
    </target>

</project>