From ea836f656428b1e10ab44c1f1b1813ec500750ba Mon Sep 17 00:00:00 2001
From: Artem Nikitin <artemnikitin@artemnikitin.com>
Date: Tue, 9 Jul 2019 10:50:43 +0200
Subject: [PATCH] Don't run tests if only docs are changed (#1216)

* Update Jenkinsfile

* Simplify notOnlyDocs()

* Update Jenkinsfile
---
 build/ci/pr/Jenkinsfile | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/build/ci/pr/Jenkinsfile b/build/ci/pr/Jenkinsfile
index d9ec2593e9..a3b580987e 100644
--- a/build/ci/pr/Jenkinsfile
+++ b/build/ci/pr/Jenkinsfile
@@ -23,11 +23,16 @@ pipeline {
         stage('Run tests in parallel') {
             parallel {
                 stage("Run unit and integration tests") {
+                    when {
+                        expression {
+                            checkout scm
+                            notOnlyDocs()
+                        }
+                    }
                     agent {
                         label 'linux'
                     }
                     steps {
-                        checkout scm
                         sh 'make -C build/ci ci-pr'
                     }
                 }
@@ -38,11 +43,16 @@ pipeline {
                     }
                 }
                 stage("Run smoke E2E tests") {
+                    when {
+                        expression {
+                            checkout scm
+                            notOnlyDocs()
+                        }
+                    }
                     agent {
                         label 'linux'
                     }
                     steps {
-                        checkout scm
                         sh 'make -C build/ci ci-e2e'
                     }
                 }
@@ -58,3 +68,11 @@ pipeline {
     }
 
 }
+
+def notOnlyDocs() {
+    // grep succeeds if there is at least one line without docs/
+    return sh (
+        script: "git diff --name-status HEAD~1 HEAD | grep -v docs/",
+    	returnStatus: true
+    ) == 0
+}