introduce JenkinsConfigRule

test/groovy/DockerExecuteTest.groovy

@@ -4,6 +4,7 @@ import org.junit.Rule
 import org.junit.Test
 import org.junit.rules.RuleChain
 
+import util.JenkinsConfigRule
 import util.JenkinsLoggingRule
 import util.JenkinsSetupRule
 
@@ -19,6 +20,7 @@ class DockerExecuteTest extends PiperTestBase {
     @Rule
     public RuleChain ruleChain = RuleChain.outerRule(new JenkinsSetupRule(this))
                                             .around(jlr)
+                                            .around(new JenkinsConfigRule(this))
 
     int whichDockerReturnValue = 0
 
@@ -53,8 +55,8 @@ class DockerExecuteTest extends PiperTestBase {
         assertTrue(docker.getParameters().contains(' --volume my_vol:/my_vol'))
     }
 
-	@Test
-	void testDockerNotInstalledResultsInLocalExecution() throws Exception {
+    @Test
+    void testDockerNotInstalledResultsInLocalExecution() throws Exception {
 
         whichDockerReturnValue = 1
         def script = loadScript("test/resources/pipelines/dockerExecuteTest/executeInsideDockerWithParameters.groovy")

test/groovy/MTABuildTest.groovy

@@ -7,7 +7,7 @@ import org.junit.Test
 import org.junit.rules.ExpectedException
 import org.junit.rules.RuleChain
 import org.junit.rules.TemporaryFolder
-
+import util.JenkinsConfigRule
 import util.JenkinsLoggingRule
 import util.JenkinsSetupRule
 import util.JenkinsShellCallRule
@@ -26,6 +26,7 @@ public class MTABuildTest extends PiperTestBase {
             .around(new JenkinsSetupRule(this))
             .around(jlr)
             .around(jscr)
+            .around(new JenkinsConfigRule(this))
 
     def currentDir
     def otherDir

test/groovy/MavenExecuteTest.groovy

@@ -7,6 +7,7 @@ import org.junit.rules.RuleChain
 import static org.junit.Assert.assertEquals
 import static org.junit.Assert.assertTrue
 
+import util.JenkinsConfigRule
 import util.JenkinsSetupRule
 import util.JenkinsShellCallRule
 
@@ -19,6 +20,7 @@ class MavenExecuteTest extends PiperTestBase {
     @Rule
     public RuleChain ruleChain = RuleChain.outerRule(new JenkinsSetupRule(this))
                                               .around(jscr)
+                                              .around(new JenkinsConfigRule(this))
 
     @Before
     void init() {

test/groovy/NeoDeploymentTest.groovy

@@ -6,6 +6,7 @@ import org.junit.Test
 import org.junit.rules.ExpectedException
 import org.junit.rules.RuleChain
 
+import util.JenkinsConfigRule
 import util.JenkinsLoggingRule
 import util.JenkinsSetupRule
 import util.JenkinsShellCallRule
@@ -23,6 +24,7 @@ class NeoDeploymentTest extends PiperTestBase {
                                               .around(new JenkinsSetupRule(this))
                                               .around(jlr)
                                               .around(jscr)
+                                              .around(new JenkinsConfigRule(this))
     def archivePath
     def warArchivePath
     def propertiesFilePath

test/groovy/PipelineExecuteTest.groovy

@@ -1,4 +1,5 @@
 import hudson.AbortException
+import util.JenkinsConfigRule
 import util.JenkinsSetupRule
 
 import org.junit.rules.TemporaryFolder
@@ -15,6 +16,7 @@ class PipelineExecuteTest extends PiperTestBase {
     @Rule
     public RuleChain ruleChain = RuleChain.outerRule(thrown)
                                               .around(new JenkinsSetupRule(this))
+                                              .around(new JenkinsConfigRule(this))
 
     def pipelinePath
     def checkoutParameters = [:]

test/groovy/PiperTestBase.groovy

@@ -1,5 +1,5 @@
 import com.lesfurets.jenkins.unit.BasePipelineTest
-import com.sap.piper.DefaultValueCache
+
 import org.yaml.snakeyaml.Yaml
 
 import static ProjectSource.projectSource
@@ -19,14 +19,8 @@ public class PiperTestBase extends BasePipelineTest {
 
         super.setUp()
 
-        helper.registerAllowedMethod("readYaml", [Map], { Map parameters ->
-            Yaml yamlParser = new Yaml()
-            return yamlParser.load(parameters.text)
-        })
-
         pipeline = pipelineFolder.newFile()
 
-        DefaultValueCache.reset()
     }
 
     protected withPipeline(p) {

test/groovy/ToolValidateTest.groovy

@@ -7,6 +7,7 @@ import org.junit.rules.ExpectedException
 import org.junit.rules.RuleChain
 import org.junit.rules.TemporaryFolder
 
+import util.JenkinsConfigRule
 import util.JenkinsLoggingRule
 import util.JenkinsSetupRule
 
@@ -15,6 +16,7 @@ class ToolValidateTest extends PiperTestBase {
     private ExpectedException thrown = new ExpectedException().none()
     private TemporaryFolder tmp = new TemporaryFolder()
     private JenkinsLoggingRule jlr = new JenkinsLoggingRule(this)
+    private JenkinsConfigRule jcr = new JenkinsConfigRule(this)
 
     @Rule
     public RuleChain ruleChain =
@@ -22,6 +24,7 @@ class ToolValidateTest extends PiperTestBase {
             .around(thrown)
             .around(new JenkinsSetupRule(this))
             .around(jlr)
+            .around(jcr)
 
     private notEmptyDir
     private script

test/groovy/util/JenkinsConfigRule.groovy

@@ -0,0 +1,38 @@
+package util
+
+import com.lesfurets.jenkins.unit.BasePipelineTest
+import com.sap.piper.DefaultValueCache
+import org.junit.rules.TestRule
+import org.junit.runner.Description
+import org.junit.runners.model.Statement
+import org.yaml.snakeyaml.Yaml
+
+class JenkinsConfigRule implements TestRule {
+
+    final BasePipelineTest testInstance
+
+
+    JenkinsConfigRule(BasePipelineTest testInstance) {
+        this.testInstance = testInstance
+    }
+
+    @Override
+    Statement apply(Statement base, Description description) {
+        return statement(base)
+    }
+
+    private Statement statement(final Statement base) {
+        return new Statement() {
+            @Override
+            void evaluate() throws Throwable {
+                testInstance.helper.registerAllowedMethod("readYaml", [Map], { Map parameters ->
+                    Yaml yamlParser = new Yaml()
+                    return yamlParser.load(parameters.text)
+                })
+                DefaultValueCache.reset()
+
+                base.evaluate()
+            }
+        }
+    }
+}