Add missing Gradle UP-TO-DATE check annotations to support Gradle 7 (#32

)

Add missing Gradle UP-TO-DATE check annotations to support Gradle 7, close #4068

Motivation:
Since Gradle 7 Tasks with getters/properties throw errors if they are not properly annotated.

Modification:
 * add annotations
 * add test with gradle 7

Result:
This plugin is now compatible

src/main/groovy/io/gatling/gradle/GatlingRunTask.groovy

@@ -4,6 +4,7 @@ import org.gradle.api.Action
 import org.gradle.api.DefaultTask
 import org.gradle.api.file.FileTree
 import org.gradle.api.tasks.InputFiles
+import org.gradle.api.tasks.Internal
 import org.gradle.api.tasks.OutputDirectory
 import org.gradle.api.tasks.TaskAction
 import org.gradle.api.tasks.TaskExecutionException
@@ -15,6 +16,7 @@ import java.nio.file.Paths
 
 class GatlingRunTask extends DefaultTask implements JvmConfigurable {
 
+    @Internal
     Closure simulations
 
     @OutputDirectory

src/main/groovy/io/gatling/gradle/JvmConfigurable.groovy

@@ -1,5 +1,8 @@
 package io.gatling.gradle
 
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.Optional
+
 trait JvmConfigurable {
 
     static final List<String> DEFAULT_JVM_ARGS = [
@@ -15,9 +18,43 @@ trait JvmConfigurable {
 
     static final Map DEFAULT_SYSTEM_PROPS = [:]
 
-    List<String> jvmArgs
+    /*
+    * Note: We need the getter and setters, because Groovy traits generate field names with fully qualified names
+    * like io_gatling_gradle_JvmConfigurable__jvmArgs which will confuse Gradle UP-TO-DATE annotations.
+    */
+
+    private List<String> jvmArgs
+
+    @Input
+    @Optional
+    List<String> getJvmArgs() {
+        return jvmArgs
+    }
+
+    void setJvmArgs(List<String> jvmArgs) {
+        this.jvmArgs = jvmArgs
+    }
+
+    private Map systemProperties
+
+    @Input
+    @Optional
+    Map getSystemProperties() {
+        return systemProperties
+    }
+
+    void setSystemProperties(Map systemProperties) {
+        this.systemProperties = systemProperties
+    }
+
+    private Map environment = [:]
 
-    Map systemProperties
+    @Input
+    Map getEnvironment() {
+        return environment
+    }
 
-    Map environment = [:]
+    void setEnvironment(Map environment) {
+        this.environment = environment
+    }
 }

src/main/groovy/io/gatling/gradle/LogbackConfigTask.groovy

@@ -1,6 +1,7 @@
 package io.gatling.gradle
 
 import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.InputFiles
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.SourceSet
 import org.gradle.api.tasks.TaskAction
@@ -33,6 +34,7 @@ class LogbackConfigTask extends DefaultTask {
 </configuration>"""
     }
 
+    @InputFiles
     Iterable<File> getLogbackConfigs() {
         SourceSet gatlingSourceSet = project.sourceSets.gatling
         gatlingSourceSet.resources.matching {

src/test/groovy/func/GradleCompatibilitySpec.groovy

@@ -33,7 +33,7 @@ class GradleCompatibilitySpec extends GatlingFuncSpec {
         then:
         result.task(":tasks").outcome == SUCCESS
         where:
-        gradleVersion << ["4.0.1", "4.10.2", "5.0", "5.6.4", "6.0", "6.3", "6.4.1"]
+        gradleVersion << ["4.0.1", "4.10.2", "5.0", "5.6.4", "6.0", "6.3", "6.4.1", "7.0"]
     }
 
     @Unroll