[feature] - add variables property to insert keyword, passing variables to insert script

examples/structure/fragments/group.groovy

@@ -0,0 +1,5 @@
+fragment {
+    group loops: var_inner_loops, users: var_inner_users, {
+        http 'GET /api/books'
+    }
+}

examples/structure/script.groovy

@@ -37,6 +37,8 @@ start {
             insert 'fragments/loop.groovy'
         }
 
+        insert 'fragments/group.groovy', variables: ["var_inner_users": 10, "var_inner_loops": 10]
+
         summary(file: 'script.jtl', enabled: true)
 
         // insert common configuration for backed listener

src/main/groovy/net/simonix/dsl/jmeter/factory/AbstractTestElementFragmentFactory.groovy

@@ -57,9 +57,22 @@ abstract class AbstractTestElementFragmentFactory extends AbstractFactory implem
         URL url = this.class.classLoader.getResource(file)
 
         // pass the current builder to script evaluation so we have same validation rule applied and automatically add children to current parent element
+        if (config.variables) {
+            config.variables.each { String variableName, Object variableValue ->
+                builder.setVariable(variableName, variableValue)
+            }
+        }
+
         groovyShell.context.setProperty("builder", builder)
         Object instance = groovyShell.evaluate(url.toURI())
 
+        // remove to keep scope of variables
+        if (config.variables) {
+            config.variables.each { String variableName, Object variableValue ->
+                builder.removeVariable(variableName)
+            }
+        }
+
         // clear groovyShell context
         groovyShell.context.setProperty("builder", null)
         return instance

src/main/groovy/net/simonix/dsl/jmeter/model/definition/DslDefinition.groovy

@@ -535,6 +535,7 @@ final class DslDefinition {
     // common
     static final KeywordDefinition INSERT = keyword('insert', KeywordCategory.OTHER) {
         property(name: 'file', type: String, required: false, defaultValue: null)
+        property(name: 'variables', type: Map, required: false, defaultValue: [:])
         leaf()
         valueIsProperty()
     }