jenkins: run tests when certain files change (#33682)

* test

* change

* work?

* debug

* git

* temp

* save

* test

* test

* work?

* fix

* test

* cleanup

* fix

* final test

* fix

* clean

* null

* final

* test

* save

* test this

* final

Jenkinsfile

@@ -89,14 +89,44 @@ def deviceStage(String stageName, String deviceType, List extra_env, def steps)
  device(device_ip, "git checkout", extra + "\n" + readFile("selfdrive/test/setup_device_ci.sh"))
  }
  steps.each { item ->
- device(device_ip, item[0], item[1])
+ if (branch != "master" && item.size() == 3 && !hasPathChanged(item[2])) {
+ println "Skipping ${item[0]}: no changes in ${item[2]}."
+ return;
+ } else {
+ device(device_ip, item[0], item[1])
+ }
  }
  }
  }
  }
  }
 }
 
+@NonCPS
+def hasPathChanged(List<String> paths) {
+ changedFiles = []
+ for (changeLogSet in currentBuild.changeSets) {
+ for (entry in changeLogSet.getItems()) {
+ for (file in entry.getAffectedFiles()) {
+ changedFiles.add(file.getPath())
+ }
+ }
+ }
+
+ env.CHANGED_FILES = changedFiles.join(" ")
+ if (currentBuild.number > 1) {
+ env.CHANGED_FILES += currentBuild.previousBuild.getBuildVariables().get("CHANGED_FILES")
+ }
+
+ for (path in paths) {
+ if (env.CHANGED_FILES.contains(path)) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
 def setupCredentials() {
  withCredentials([
  string(credentialsId: 'azure_token', variable: 'AZURE_TOKEN'),