after_script to print extra test info

.travis.yml

@@ -12,12 +12,17 @@ addons:
       - openjdk-6-jdk
 
 before_install:
-  - >
+  - > # install mvn 3.2.5 for use with java6
       export MVN_325=$HOME/.mvn/3.2.5
       which $MVN_325/bin/mvn || mkdir -p $MVN_325 &&
       curl https://apache.osuosl.org/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.tar.gz |
       tar xz -C $MVN_325 --strip-components=1
 
+after_script:
+  - > # print more detailed info about test results
+      cat target/surefire-reports/TEST-ysoserial.payloads.PayloadsTest.xml |
+      grep testcase -A1 | grep -B1 -E 'failure|error|skipped' | grep -v -- --
+
 matrix:
   allow_failures:
     - jdk: oraclejdk11