try to fix distsourcebuild error

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1884785 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -1239,7 +1239,7 @@ under the License.
                 <length string="@{module2}" when="greater" length="0"/>
             </condition>
 
-            <delete file="build/status-as-tests-run.txt" failonerror="false"/>
+            <delete file="@{outputDir}/status-as-tests-run.txt" failonerror="false"/>
 
             <!-- As of 2018, JaCoCo is managing expectations and stay on Java 5 and therefore don't support junitlauncher -->
             <!-- https://github.com/jacoco/jacoco/issues/673  ... m( -->
@@ -1255,6 +1255,7 @@ under the License.
 
                 <testclasses outputDir="@{outputDir}">
                     <fork>
+                        <sysproperty key="junit5.progress.file" value="@{outputDir}/status-as-tests-run.txt"/>
                         <syspropertyset refid="junit.properties"/>
                         <sysproperty key="java.io.tmpdir" value="${tempdir}"/>
                         <jvmarg value="-Xmx@{heap}M"/>
@@ -1279,14 +1280,15 @@ under the License.
                         <jvmarg line="--add-modules org.apache.poi.@{module2}" if:set="use_module2"/>
                     </fork>
 
+                    <!-- can't use resultfile="status-as-tests-run.txt" here ... it's truncated with every test -->
+                    <listener classname="Junit5Progress" outputDir="@{outputDir}" />
                     <listener type="legacy-plain" sendSysOut="true" outputDir="@{outputDir}"/>
                     <listener type="legacy-xml" sendSysOut="true" sendSysErr="true" outputDir="@{outputDir}"/>
-                    <listener classname="Junit5Progress"/>
                     <elements/>
                 </testclasses>
             </junitlauncher>
 
-            <loadfile property="contents" srcFile="build/status-as-tests-run.txt" />
+            <loadfile property="contents" srcFile="@{outputDir}/status-as-tests-run.txt" />
             <echo message="${contents}" />
         </sequential>
     </macrodef>

src/excelant/poi-ant-contrib/Junit5Progress.java

@@ -36,7 +36,7 @@ import org.junit.platform.launcher.TestPlan;
  **/
 public class Junit5Progress implements TestExecutionListener {
 
-    private StringWriter inMemoryWriter = new StringWriter();
+    private final StringWriter inMemoryWriter = new StringWriter();
 
     private int numSkippedInCurrentClass;
     private int numAbortedInCurrentClass;
@@ -97,10 +97,14 @@ public class Junit5Progress implements TestExecutionListener {
     }
 
     /*
-     * Append to file on disk since listener can't write to System.out (becuase legacy listeners enabled)
+     * Append to file on disk since listener can't write to System.out (because legacy listeners enabled)
+     *
+     * Implementing/using the TestResultFormatter - mentioned in the junitlauncher ant manual -
+     * doesn't work currently, because the output is truncated/overwritten with every test
      */
     private void flushToDisk() {
-        try (FileWriter writer = new FileWriter("build/status-as-tests-run.txt", true)) {
+        String outFile = System.getProperty("junit5.progress.file", "build/status-as-tests-run.txt");
+        try (FileWriter writer = new FileWriter(outFile, true)) {
             writer.write(inMemoryWriter.toString());
         } catch (IOException e) {
             throw new UncheckedIOException(e);