是什么导致PHPUnit代码覆盖率报告在相同代码基础上的差异？

我有一个PHP项目，包含一些单元和一些集成测试 . 我使用Jenkins部署它：本地在我的Ubuntu VM上和在Windows Server 2008 r2上的测试服务器上 .

本地VM和测试服务器的 build.xml 和 phpunit.xml 在整体上是相同的（差异仅在于斜杠以及如何调用 phpunit 之类的服务，如下所示） . 但代码覆盖率报告显示不同的结果 . 在本地，代码覆盖率大约比服务器上高 10% ：

local VM (Ubuntu)

PHPUnit代码覆盖率：行90.24％，函数和方法95.31％，类和特征85.00％

三叶草PHP覆盖率报告：代码覆盖率 - 77％（5295/6880元素）：77％（5295/6880元素），方法79.3％，声明76.5％

test server (Windows Server 2008 r2)

PHPUnit代码覆盖率：行81.89％，函数和方法85.25％，类和特征57.81 %%

三叶草PHP覆盖率报告：代码覆盖率 - 77％（5295/6880元素）：77％（5295/6880元素），方法79.3％，声明76.5％

What might cause such a difference and how to correct it?

more info

local build.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project name="MyProject" default="full-build">
    ...
    <property name="phpunit" value="./vendor/bin/phpunit" />
    <target name="full-build" depends="prepare,static-analysis,phpdox,phpunit,-check-failure" description="Performs static analysis, runs the tests, and generates project documentation." />
    ...
    <target name="phpunit" unless="phpunit.done" depends="prepare" description="Run unit tests with PHPUnit">
        <exec executable="${phpunit}" resultproperty="result.phpunit" taskname="phpunit">
            <arg value="--configuration" />
            <arg path="${basedir}/phpunit.xml" />
        </exec>
        <property name="phpunit.done" value="true" />
    </target>
    <target name="-check-failure">
        <fail message="PHPUnit did not finish successfully">
            <condition>
                <not>
                    <equals arg1="${result.phpunit}" arg2="0" />
                </not>
            </condition>
        </fail>
    </target>
</project>

build.xml on the server:

<?xml version="1.0" encoding="UTF-8"?>
<project name="MyProject" default="full-build">
    ...
    <property name="phpunit" value="vendor\phpunit\phpunit\phpunit" />
    <target name="full-build" depends="prepare,static-analysis,phpdox,phpunit,-check-failure" description="Performs static analysis, runs the tests, and generates project documentation." />
    ...
    <target name="phpunit" unless="phpunit.done" depends="prepare" description="Run unit tests with PHPUnit">
        <exec executable="cmd" resultproperty="result.phpunit" taskname="phpunit">
            <arg value="/c" />
            <arg value="phpdbg" />
            <arg value="-qrr" />
            <arg value="${phpunit}" />
            <arg value="--configuration" />
            <arg path="${basedir}/phpunit.xml" />
        </exec>
        <property name="phpunit.done" value="true" />
    </target>
    <target name="-check-failure">
        <fail message="PHPUnit did not finish successfully">
            <condition>
                <not>
                    <equals arg1="${result.phpunit}" arg2="0" />
                </not>
            </condition>
        </fail>
    </target>
</project>

local phpunit.xml:

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/6.1/phpunit.xsd"
     backupGlobals="false"
     backupStaticAttributes="false"
     bootstrap="test/Bootstrap.php"
     cacheTokens="false"
     colors="true"
>
    <php>
        <env name="RUNTIME_CONTEXT" value="testing"/>
    </php>
    <testsuites>
        <testsuite name="unit-app-only">
            <directory suffix="Test.php">test/Unit</directory>
        </testsuite>
        <testsuite name="integration-app-only">
            <directory suffix="Test.php">test/Integration</directory>
        </testsuite>
        <testsuite name="app-lib">
            <directory suffix="Test.php">vendor/my-lib/mlb-common-lib/tests</directory>
        </testsuite>
    </testsuites>
    <logging>
        <log type="coverage-html" target="build/coverage"/>
        <log type="coverage-clover" target="build/logs/clover.xml"/>
        <log type="coverage-crap4j" target="build/logs/crap4j.xml"/>
        <log type="junit" target="build/logs/junit.xml" logIncompleteSkipped="false"/>
    </logging>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">module/**/src</directory>
            <directory suffix=".php">vendor/my-lib/**/src</directory>
            <exclude>
                <directory suffix=".php">vendor/my-lib/**/tests</directory>
            </exclude>
        </whitelist>
    </filter>
</phpunit>

phpunit.xml on the server:

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/6.1/phpunit.xsd"
     backupGlobals="false"
     backupStaticAttributes="false"
     bootstrap="test/Bootstrap.php"
     cacheTokens="false"
     colors="true"
>
    <php>
        <env name="RUNTIME_CONTEXT" value="testing"/>
    </php>
    <testsuites>
        <testsuite name="unit-app-only">
            <directory suffix="Test.php">test\Unit</directory>
        </testsuite>
        <testsuite name="integration-app-only">
            <directory suffix="Test.php">test\Integration</directory>
        </testsuite>
        <testsuite name="app-lib">
            <directory suffix="Test.php">vendor\my-lib\mlb-common-lib\tests</directory>
        </testsuite>
    </testsuites>
    <logging>
        <log type="coverage-html" target="build\coverage"/>
        <log type="coverage-clover" target="build\logs\clover.xml"/>
        <log type="coverage-crap4j" target="build\logs\crap4j.xml"/>
        <log type="junit" target="build\logs\junit.xml" logIncompleteSkipped="false"/>
    </logging>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">module\**\src</directory>
            <directory suffix=".php">vendor\my-lib\**\src</directory>
            <exclude>
                <directory suffix=".php">vendor\my-lib\**\tests</directory>
            </exclude>
        </whitelist>
    </filter>
</phpunit>

UPDATE

软件版本：

local Ubuntu VM

• PHP 7.0.3

• Xdebug 2.4.0RC4

• PHPUnit 6.2.2

Windows 2008 server

• PHP 7.0.2

• PHPUnit 6.2.2