try to reproduce reported issues but failed

spotbugs/spotbugs#420

src/it/encoding-aux-classpath/invoker.properties

@@ -0,0 +1,4 @@
+invoker.goals = clean compile spotbugs:check -X
+
+# The expected result of the build, possible values are "success" (default) and "failure"
+invoker.buildResult = success

src/it/encoding-aux-classpath/pom.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Copyright (C) 2006-2007 the original author or authors.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.github.spotbugs.spotbugs-maven-plugin.it</groupId>
+    <artifactId>common</artifactId>
+    <version>testing</version>
+    <relativePath>../common.xml</relativePath>
+  </parent>
+  <artifactId>encoding-aux-classpath</artifactId>
+  <name>encoding-aux-classpath</name>
+  <packaging>jar</packaging>
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+  <dependencies>
+    <dependency>
+      <groupId>empty</groupId>
+      <artifactId>empty</artifactId>
+      <version>1.0</version>
+      <scope>system</scope>
+      <systemPath>${project.basedir}/lib/könig/empty.jar</systemPath>
+    </dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>com.github.spotbugs</groupId>
+        <artifactId>spotbugs-maven-plugin</artifactId>
+        <configuration>
+          <xmlOutput>true</xmlOutput>
+          <failOnError>false</failOnError>
+          <debug>@spotbugsTestDebug@</debug>
+          <threshold>High</threshold>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>

src/it/encoding-aux-classpath/verify.groovy

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+/*
+ * Copyright (C) 2006-2007 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+File spotbugsHtml =  new File(basedir, 'target/site/spotbugs.html')
+assert !spotbugsHtml.exists()
+
+File spotbugXdoc = new File(basedir, 'target/spotbugs.xml')
+assert spotbugXdoc.exists()
+
+File spotbugXml = new File(basedir, 'target/spotbugsXml.xml')
+assert spotbugXml.exists()
+
+println '**********************************'
+println "Checking Spotbugs Native XML file"
+println '**********************************'
+
+path = new XmlSlurper().parse(spotbugXml)
+
+allNodes = path.depthFirst().collect{ it }
+def spotbugsXmlErrors = allNodes.findAll {it.name() == 'BugInstance'}.size()
+println "BugInstance size is ${spotbugsXmlErrors}"
+
+
+
+println '***************************'
+println "Checking xDoc file"
+println '***************************'
+
+def path = new XmlSlurper().parse(spotbugXdoc)
+
+xNodes = path.depthFirst().collect{ it }
+def xdocErrors = xNodes.findAll {it.name() == 'BugInstance'}.size()
+println "BugInstance size is ${xdocErrors}"
+
+assert xdocErrors == spotbugsXmlErrors
+