add code coverage

Dockerfile

@@ -19,4 +19,4 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   && rm -rf /var/lib/apt/lists/* \
   && mkdir -p /var/lib/shiny-server/bookmarks/shiny
 
-RUN install2.r ggplot2 jpeg png stringr gridExtra grid testthat
+RUN install2.r ggplot2 jpeg png stringr gridExtra grid testthat covr

Jenkinsfile

@@ -39,6 +39,13 @@ pipeline {
          '''
          }
       }
+       stage('test coverage') {
+        steps {
+         sh '''
+         R -e 'covr::package_coverage(".")'
+         '''
+         }
+        }
       stage('Clean') {
         steps {