[CircleCI 2.0] [Java] [Maven] [JUnit] Aggregate JUnit test results with CircleCI 2.0

I tried using CircleCI 2.0 for Java automatic test execution, but the official document method resulted in permission denied at mkdir, so make a note of the corresponding procedure. (Maybe I made a mistake in the document or lacked information ...)

Collecting Test Metadata - CircleCI

Official documentation method

    steps:
      - run: |
          mkdir -p /junit/
          find . -type f -regex ".*/target/surefire-reports/.*xml" -exec cp {} /junit/ \;
      - store_test_results:
          path: /junit
      - store_artifacts:
          path: /junit   

How to fix(Created under a directory in the workspace, not from the root directory)

       - run: |
          mkdir -p ~/repo/junit/
          find . -type f -regex ".*/target/surefire-reports/.*xml" -exec cp {} ~/repo/junit/ \;

       - store_test_results:
          path: ~/repo/junit

       - store_artifacts:
          path: ~/repo/junit 

When 1.0 has $ CIRCLE_TEST_REPORTS and specify that I was doing it, but it seems that this environment variable has been deleted when it is 2.0.

.Circleci / config.yml for Java 8 environment

Since it is only the aggregated part of the test, I will also post the full text of the settings verified this time. (I just added a test aggregation task for Maven to the sample)

# Java Maven CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-java/ for more details
#
 version: 2
 jobs:
   build:
     docker:
       # specify the version you desire here
       - image: circleci/openjdk:8-jdk

       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images
       # documented at https://circleci.com/docs/2.0/circleci-images/
       # - image: circleci/postgres:9.4

     working_directory: ~/repo

     environment:
       # Customize the JVM maximum heap limit
       MAVEN_OPTS: -Xmx3200m

     steps:
       - checkout

       # Download and cache dependencies
       - restore_cache:
           keys:
           - v1-dependencies-{{ checksum "pom.xml" }}
           # fallback to using the latest cache if no exact match is found
           - v1-dependencies-

       - run: mvn dependency:go-offline

       - save_cache:
           paths:
             - ~/.m2
           key: v1-dependencies-{{ checksum "pom.xml" }}

       # run tests!
       - run: mvn integration-test

       - run: |
          mkdir -p ~/repo/junit/
          find . -type f -regex ".*/target/surefire-reports/.*xml" -exec cp {} ~/repo/junit/ \;

       - store_test_results:
          path: ~/repo/junit

       - store_artifacts:
          path: ~/repo/junit