diff --git a/.gitignore b/.gitignore
index 8539942..3d02b83 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /.idea/
 build
 .gradle
+/bin/
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..1a0819e
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+java temurin-11.0.20+8
diff --git a/.travis.yml b/.travis.yml
index 19c6239..164288b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,8 @@ cache:
     - '$HOME/.gradle/wrapper/'
 
 script:
-  - ./gradlew -is check
+- test/bin/smoketest || travis_terminate 1
+- ./gradlew -is check
 
 before_deploy:
   - |
diff --git a/build.gradle b/build.gradle
index f88dc74..9a535cc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,6 +35,12 @@ def versionLikeRegexp = /^\d+\.\d+.*/
 def travisVersionOK = travisVersion && (travisVersion ==~ versionLikeRegexp)
 
 paramVersion = paramVersion ?: (travisVersionOK ? travisVersion : defVersion)
+if (findProperty('snapshot') != null) {
+    paramVersion += '-SNAPSHOT'
+}
+
+println "version:$paramVersion"
+
 version = paramVersion
 group = paramGroupId
 
@@ -49,8 +55,9 @@ repositories {
 dependencies {
     gradleApi()
     localGroovy()
-    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.5.2'
-    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.5.2'
+    testImplementation(enforcedPlatform("org.junit:junit-bom:5.10.0")) // JUnit 5 BOM
+    testImplementation("org.junit.jupiter:junit-jupiter")
+
     implementation 'com.appland:appmap-agent:[1.3, 2.0)'
     implementation 'commons-lang:commons-lang:2.6'
     implementation 'com.google.guava:guava:30.1.1-jre'
diff --git a/src/main/java/com/appland/appmap/gradle/AgentCommandLineLoader.java b/src/main/java/com/appland/appmap/gradle/AgentCommandLineLoader.java
index 79a69bb..0fbf60f 100644
--- a/src/main/java/com/appland/appmap/gradle/AgentCommandLineLoader.java
+++ b/src/main/java/com/appland/appmap/gradle/AgentCommandLineLoader.java
@@ -2,19 +2,22 @@
 
 import static java.lang.String.format;
 
-import com.google.common.base.Joiner;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+
 import org.apache.commons.lang.StringEscapeUtils;
 import org.gradle.api.GradleException;
 import org.gradle.api.Named;
+import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.logging.Logger;
 import org.gradle.api.logging.Logging;
 import org.gradle.api.tasks.Internal;
 import org.gradle.process.CommandLineArgumentProvider;
 import org.gradle.util.RelativePathUtil;
 
+import com.google.common.base.Joiner;
+
 /**
  * This class is the actual responsible of building the JVM args to run the AppMap Agent.
  */
@@ -51,6 +54,8 @@ public String getName() {
    */
   @Internal
   public List<String> getAsJvmArg() {
+    RegularFileProperty configFile = appmap.getConfigFile();
+
     if (!appmap.isConfigFileValid()) {
       appmap.setSkip(true);
       throw new GradleException("Configuration file must exist and be readable: "
@@ -69,7 +74,7 @@ public List<String> getAsJvmArg() {
       List<String> argumentLn = new ArrayList<>();
       argumentLn.add(javaAgentArg);
 
-      if ( appmap.getConfigFile().isPresent() ) {
+      if (configFile != null && configFile.isPresent()) {
         argumentLn.add("-Dappmap.config.file=" + appmap.getConfigFilePath());
       }
       argumentLn.add("-Dappmap.output.directory=" + appmap.getOutputDirectoryPath());
diff --git a/src/main/java/com/appland/appmap/gradle/AppMapPlugin.java b/src/main/java/com/appland/appmap/gradle/AppMapPlugin.java
index 896a81c..415d8f0 100644
--- a/src/main/java/com/appland/appmap/gradle/AppMapPlugin.java
+++ b/src/main/java/com/appland/appmap/gradle/AppMapPlugin.java
@@ -26,10 +26,9 @@ public void apply(Project project) {
     config.setTransitive(true);
     config.setDescription("AppMap agent to generate app map data.");
     config.defaultDependencies(dependencies ->
-        dependencies.add(
-            project.getDependencies().create("com.appland:appmap-agent:" + DEFAULT_AGENT_VERSION)
-        )
-    );
+    dependencies.add(
+            project.getDependencies().create(
+                    "com.appland:appmap-agent:" + findProperty("appmapAgentVersion", DEFAULT_AGENT_VERSION))));
     AppMapPluginExtension extension = project.getExtensions()
         .create(PLUGIN_EXTENSION_NAME, AppMapPluginExtension.class, project, config);
     //extension.setAgentVersion(DEFAULT_AGENT_VERSION);*/
@@ -54,44 +53,41 @@ private void addAppMapGradleTasks(AppMapPluginExtension extension) {
    * @param extension holds the config parameters for the plugin.
    */
   private void addAppMapTasks(AppMapPluginExtension extension) {
-    project.getTasks().register(
-        "appmap",
-        AppMapTask.class,
-        prepareAgentTask -> {
-          prepareAgentTask.doFirst(
-              new ValidateConfigAction(extension.getConfigFile().getAsFile())
-          );
-          prepareAgentTask.doLast(new LoadAppMapAgentAction(project, extension));
-          prepareAgentTask.setGroup(LifecycleBasePlugin.BUILD_GROUP);
-          prepareAgentTask.setDescription(
-              String.format("Injects AppMap Agent JVM settings to the 'test' task")
-          );
-        });
+      project.getTasks().register(
+              "appmap",
+              AppMapTask.class,
+              prepareAgentTask -> {
+                  prepareAgentTask.doFirst(
+                          new ValidateConfigAction(extension.getConfigFile()));
+                  prepareAgentTask.doLast(new LoadAppMapAgentAction(project, extension));
+                  prepareAgentTask.setGroup(LifecycleBasePlugin.BUILD_GROUP);
+                  prepareAgentTask.setDescription(
+                          String.format("Injects AppMap Agent JVM settings to the 'test' task"));
+              });
 
-    project.getTasks().register(
-        "appmap-validate-config",
-        validateConfigTask -> {
-          validateConfigTask.doFirst(
-              new ValidateConfigAction(extension.getConfigFile().getAsFile())
-          );
-          validateConfigTask.setGroup(LifecycleBasePlugin.BUILD_GROUP);
-          validateConfigTask.setDescription(
-              String.format("Validates the AppMap Agent configuration")
-          );
-        }
-    );
+      project.getTasks().register(
+              "appmap-validate-config",
+              validateConfigTask -> {
+                  validateConfigTask.doFirst(
+                          new ValidateConfigAction(extension.getConfigFile()));
+                  validateConfigTask.setGroup(LifecycleBasePlugin.BUILD_GROUP);
+                  validateConfigTask.setDescription(
+                          String.format("Validates the AppMap Agent configuration"));
+              });
 
       project.getTasks().register(
-          "appmap-print-jar-path",
-          agentJarPathTask -> {
-              agentJarPathTask.doFirst(
-                  new PrintJarPathAction(extension)
-              );
-              agentJarPathTask.setGroup(LifecycleBasePlugin.BUILD_GROUP);
-              agentJarPathTask.setDescription(
-                  String.format("Prints the file path of the AppMap Agent JAR")
-              );
-          }
-      );
+              "appmap-print-jar-path",
+              agentJarPathTask -> {
+                  agentJarPathTask.doFirst(
+                          new PrintJarPathAction(extension));
+                  agentJarPathTask.setGroup(LifecycleBasePlugin.BUILD_GROUP);
+                  agentJarPathTask.setDescription(
+                          String.format("Prints the file path of the AppMap Agent JAR"));
+              });
+  }
+
+  String findProperty(String name, String defaultValue) {
+      String value = (String) project.findProperty(name);
+      return value != null ? value : defaultValue;
   }
 }
diff --git a/src/main/java/com/appland/appmap/gradle/AppMapPluginExtension.java b/src/main/java/com/appland/appmap/gradle/AppMapPluginExtension.java
index 6e73168..b5e3d8e 100644
--- a/src/main/java/com/appland/appmap/gradle/AppMapPluginExtension.java
+++ b/src/main/java/com/appland/appmap/gradle/AppMapPluginExtension.java
@@ -6,8 +6,12 @@
 
 import org.gradle.api.Project;
 import org.gradle.api.artifacts.Configuration;
+import org.gradle.api.file.Directory;
 import org.gradle.api.file.DirectoryProperty;
+import org.gradle.api.file.ProjectLayout;
+import org.gradle.api.file.RegularFile;
 import org.gradle.api.file.RegularFileProperty;
+import org.gradle.api.model.ObjectFactory;
 import org.gradle.api.tasks.Input;
 
 /**
@@ -29,21 +33,24 @@ public class AppMapPluginExtension {
   private int eventValueSize = 1024;
 
   /**
-   * Constructor method, receives the project, configuration and fork options, read and provide the
+   * Constructor method, receives the project, configuration and fork options,
+   * read and provide the
    * rest of the configuration to the AppMapPlugin class.
    *
-   * @param project Actual project object representation.
+   * @param project   Actual project object representation.
    * @param agentConf Holder of the project configuration.
    */
   public AppMapPluginExtension(Project project, Configuration agentConf) {
     this.project = project;
     this.agentConf = agentConf;
-    this.configFile = project.getObjects().fileProperty()
-        .value(project.getLayout().getProjectDirectory().file("appmap.yml"));
     this.outputDirectory = project.getObjects().directoryProperty()
         .value(project.getLayout().getBuildDirectory().dir(DEFAULT_OUTPUT_DIRECTORY).get());
-    this.debugFile = project.getObjects().fileProperty()
-        .value(project.getLayout().getBuildDirectory().file("appmap/agent.log").get());
+    ProjectLayout projectLayout = project.getLayout();
+    Directory projectDirectory = projectLayout.getProjectDirectory();
+    ObjectFactory projectObjects = project.getObjects();
+    this.configFile = projectObjects.fileProperty();
+    this.debugFile = projectObjects.fileProperty()
+        .value(projectLayout.getBuildDirectory().file("appmap/agent.log").get());
     logger.info("AppMap Plugin Initialized.");
   }
 
@@ -117,10 +124,16 @@ public boolean isSkip() {
   }
 
   public boolean isConfigFileValid() {
-    return AppMapPluginExtension.isConfigFileValid(configFile.get().getAsFile());
+    return AppMapPluginExtension.isConfigFileValid(configFile.getOrNull());
   }
 
-  public static boolean isConfigFileValid(File configFile) {
+  public static boolean isConfigFileValid(RegularFile configFileProperty) {
+    if (configFileProperty == null) {
+      // If there's no config file specified, let the agent deal with it.
+      return true;
+    }
+
+    File configFile = configFileProperty.getAsFile();
     return configFile.exists() && Files.isReadable(configFile.toPath());
   }
 }
diff --git a/src/main/java/com/appland/appmap/gradle/ValidateConfigAction.java b/src/main/java/com/appland/appmap/gradle/ValidateConfigAction.java
index 43b9aef..fb467f0 100644
--- a/src/main/java/com/appland/appmap/gradle/ValidateConfigAction.java
+++ b/src/main/java/com/appland/appmap/gradle/ValidateConfigAction.java
@@ -1,10 +1,10 @@
 package com.appland.appmap.gradle;
 
-import java.io.File;
-
 import org.gradle.api.Action;
 import org.gradle.api.GradleException;
 import org.gradle.api.Task;
+import org.gradle.api.file.RegularFile;
+import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.Provider;
 
 /**
@@ -12,22 +12,22 @@
  */
 public class ValidateConfigAction implements Action<Task> {
 
-  private final Provider<File> configFile;
+  private final Provider<RegularFile> configFile;
 
-  public ValidateConfigAction(Provider<File> configFile) {
-    this.configFile = configFile;
+  public ValidateConfigAction(RegularFileProperty regularFileProperty) {
+    this.configFile = regularFileProperty;
   }
 
   @Override
   public void execute(Task task) {
     if (!isConfigFileValid()) {
       throw new GradleException(
-          "Config file " + configFile.get().getPath() + " not found or not readable."
+          "Config file " + configFile.get().getAsFile().getPath() + " not found or not readable."
       );
     }
   }
 
   protected boolean isConfigFileValid() {
-    return AppMapPluginExtension.isConfigFileValid(configFile.get());
+    return AppMapPluginExtension.isConfigFileValid(configFile.getOrNull());
   }
 }
diff --git a/src/test/java/com/appland/appmap/gradle/AppMapPluginFunctionalTest.java b/src/test/java/com/appland/appmap/gradle/AppMapPluginFunctionalTest.java
index 1344ba0..9aabef7 100644
--- a/src/test/java/com/appland/appmap/gradle/AppMapPluginFunctionalTest.java
+++ b/src/test/java/com/appland/appmap/gradle/AppMapPluginFunctionalTest.java
@@ -1,23 +1,27 @@
 package com.appland.appmap.gradle;
 
-import org.gradle.testkit.runner.BuildResult;
-import org.gradle.testkit.runner.GradleRunner;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.io.TempDir;
+import static org.gradle.testkit.runner.TaskOutcome.FAILED;
+import static org.gradle.testkit.runner.TaskOutcome.NO_SOURCE;
+import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 
-import static org.gradle.testkit.runner.TaskOutcome.*;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import org.gradle.testkit.runner.BuildResult;
+import org.gradle.testkit.runner.GradleRunner;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 
 public class AppMapPluginFunctionalTest {
 
-    @TempDir File testProjectDir;
+    @TempDir
+    File testProjectDir;
     private File settingsFile;
     private File buildFile;
     private File appmapConfigFile;
@@ -30,25 +34,10 @@ public void setup() {
     }
 
     @Test
-    public void testValidateConfigGoalFailsOnNonExistentFile() throws IOException {
-        writeFile(settingsFile, SETTINGS_GRADLE_CONTENT);
-        writeFile(buildFile, BUILD_FILE_CONTENT);
-
-        BuildResult result = GradleRunner.create()
-                .withProjectDir(testProjectDir)
-                .withArguments("appmap-validate-config")
-                .withPluginClasspath()
-                .buildAndFail();
-
-        assertTrue(result.getOutput().contains("not found or not readable."));
-        assertEquals(FAILED, result.task(":appmap-validate-config").getOutcome());
-    }
-
-    @Test
-    public void testValidateConfigGoalSucceed() throws IOException {
+    public void testValidateConfigGoalSucceedsOnNonExistentFile() throws IOException {
         writeFile(settingsFile, SETTINGS_GRADLE_CONTENT);
-        writeFile(buildFile, BUILD_FILE_CONTENT);
-        writeFile(appmapConfigFile, APPMAP_CONFIGFILE_CONTENT);
+        String buildFileContent = String.format(BUILD_FILE_CONTENT, "");
+        writeFile(buildFile, buildFileContent);
 
         BuildResult result = GradleRunner.create()
                 .withProjectDir(testProjectDir)
@@ -60,38 +49,71 @@ public void testValidateConfigGoalSucceed() throws IOException {
         assertEquals(SUCCESS, result.task(":appmap-validate-config").getOutcome());
     }
 
-    @Test
-    public void testAppMapGoalSucceed() throws IOException {
-        writeFile(settingsFile, SETTINGS_GRADLE_CONTENT);
-        writeFile(buildFile, BUILD_FILE_CONTENT);
-        writeFile(appmapConfigFile, APPMAP_CONFIGFILE_CONTENT);
+    @Nested
+    class withConfigSpecified {
+        @BeforeEach
+        void writeFiles() throws IOException {
+            writeFile(settingsFile, SETTINGS_GRADLE_CONTENT);
+            writeFile(buildFile, String.format(BUILD_FILE_CONTENT, "configFile = file(\"$projectDir/appmap.yml\")\n"));
+        }
 
-        BuildResult result = GradleRunner.create()
-                .withProjectDir(testProjectDir)
-                .withArguments("appmap")
-                .withPluginClasspath()
-                .build();
+        @Test
+        public void testValidateConfigGoalFailsOnNonExistentFile() throws IOException {
+            BuildResult result = GradleRunner.create()
+                    .withProjectDir(testProjectDir)
+                    .withArguments("appmap-validate-config")
+                    .withPluginClasspath()
+                    .buildAndFail();
 
-        assertTrue(result.getOutput().contains("BUILD SUCCESSFUL"));
-        assertEquals(NO_SOURCE, result.task(":appmap").getOutcome());
-    }
+            assertTrue(result.getOutput().contains("not found or not readable."));
+            assertEquals(FAILED, result.task(":appmap-validate-config").getOutcome());
+        }
 
-    @Test
-    public void testAppMapJarPath() throws IOException {
-        writeFile(settingsFile, SETTINGS_GRADLE_CONTENT);
-        writeFile(buildFile, BUILD_FILE_CONTENT);
-        writeFile(appmapConfigFile, APPMAP_CONFIGFILE_CONTENT);
+        @Nested
+        class withConfigPresent {
+            @BeforeEach
+            void writeConfig() throws IOException {
+                writeFile(appmapConfigFile, APPMAP_CONFIGFILE_CONTENT);
+            }
 
-        BuildResult result = GradleRunner.create()
-            .withProjectDir(testProjectDir)
-            .withArguments("appmap-print-jar-path")
-            .withPluginClasspath()
-            .build();
+            @Test
+            public void testValidateConfigGoalSucceed() throws IOException {
+                BuildResult result = GradleRunner.create()
+                        .withProjectDir(testProjectDir)
+                        .withArguments("appmap-validate-config")
+                        .withPluginClasspath()
+                        .build();
 
-        assertTrue(result.getOutput().contains("BUILD SUCCESSFUL"));
-        assertTrue(result.getOutput().contains("java.home="));
-        assertTrue(result.getOutput().contains("com.appland:appmap-agent.jar.path="));
-        assertEquals(SUCCESS, result.task(":appmap-print-jar-path").getOutcome());
+                assertTrue(result.getOutput().contains("BUILD SUCCESSFUL"));
+                assertEquals(SUCCESS, result.task(":appmap-validate-config").getOutcome());
+            }
+
+            @Test
+            public void testAppMapGoalSucceed() throws IOException {
+                BuildResult result = GradleRunner.create()
+                        .withProjectDir(testProjectDir)
+                        .withArguments("appmap")
+                        .withPluginClasspath()
+                        .build();
+
+                assertTrue(result.getOutput().contains("BUILD SUCCESSFUL"));
+                assertEquals(NO_SOURCE, result.task(":appmap").getOutcome());
+            }
+
+            @Test
+            public void testAppMapJarPath() throws IOException {
+                BuildResult result = GradleRunner.create()
+                        .withProjectDir(testProjectDir)
+                        .withArguments("appmap-print-jar-path")
+                        .withPluginClasspath()
+                        .build();
+
+                assertTrue(result.getOutput().contains("BUILD SUCCESSFUL"));
+                assertTrue(result.getOutput().contains("java.home="));
+                assertTrue(result.getOutput().contains("com.appland:appmap-agent.jar.path="));
+                assertEquals(SUCCESS, result.task(":appmap-print-jar-path").getOutcome());
+            }
+        }
     }
 
     private void writeFile(File destination, String content) throws IOException {
@@ -120,7 +142,7 @@ private void writeFile(File destination, String content) throws IOException {
             "}\n" +
             "\n" +
             "appmap {\n" +
-            "    configFile = file(\"$projectDir/appmap.yml\")\n" +
+            "    %s" +
             "    outputDirectory = file(\"$projectDir/build/appmap\")\n" +
             "    skip = false\n" +
             "    debug = \"info\"\n" +
diff --git a/test/bin/smoketest b/test/bin/smoketest
new file mode 100755
index 0000000..0dceb69
--- /dev/null
+++ b/test/bin/smoketest
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -ex -o pipefail
+
+version=$(./gradlew -q clean check publishToMavenLocal -Psnapshot | awk '/^version:/ {print $2}' FS=:)
+
+cd test/fixture
+appmapDir=app/build/appmap
+rm -rf $appmapDir
+./gradlew -PappmapGradleVersion=$version ${appmapAgentVersion+-PappmapAgentVersion=$appmapAgentVersion} clean appmap test
+
+appmap=$appmapDir/junit/com_example_AppTest_shouldAnswerWithTrue.appmap.json
+test -f $appmap
+events=$(jq '.events | length' $appmap)
+test $events -eq 4
diff --git a/test/fixture/.gitattributes b/test/fixture/.gitattributes
new file mode 100644
index 0000000..097f9f9
--- /dev/null
+++ b/test/fixture/.gitattributes
@@ -0,0 +1,9 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+
diff --git a/test/fixture/.gitignore b/test/fixture/.gitignore
new file mode 100644
index 0000000..1b6985c
--- /dev/null
+++ b/test/fixture/.gitignore
@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build
diff --git a/test/fixture/app/.gitignore b/test/fixture/app/.gitignore
new file mode 100644
index 0000000..bdba1df
--- /dev/null
+++ b/test/fixture/app/.gitignore
@@ -0,0 +1,2 @@
+/appmap.yml
+/tmp
diff --git a/test/fixture/app/build.gradle b/test/fixture/app/build.gradle
new file mode 100644
index 0000000..a40b786
--- /dev/null
+++ b/test/fixture/app/build.gradle
@@ -0,0 +1,39 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java application project to get you started.
+ * For more details take a look at the 'Building Java & JVM projects' chapter in the Gradle
+ * User Manual available at https://docs.gradle.org/8.1.1/userguide/building_java_projects.html
+ */
+
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    id 'application'
+    id 'com.appland.appmap' version "${appmapGradleVersion}"
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenLocal()
+    mavenCentral()
+}
+
+dependencies {
+    // Use JUnit Jupiter for testing.
+    testImplementation 'junit:junit:4.13.2'
+
+    // This dependency is used by the application.
+    implementation 'com.google.guava:guava:31.1-jre'
+}
+
+// Apply a specific Java toolchain to ease working on different environments.
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(8)
+    }
+}
+
+application {
+    // Define the main class for the application.
+    mainClass = 'com.example.App'
+}
diff --git a/test/fixture/app/gradle.properties b/test/fixture/app/gradle.properties
new file mode 100644
index 0000000..7f24b1b
--- /dev/null
+++ b/test/fixture/app/gradle.properties
@@ -0,0 +1 @@
+appmapGradleVersion = [1,2)
\ No newline at end of file
diff --git a/test/fixture/app/src/main/java/com/example/App.java b/test/fixture/app/src/main/java/com/example/App.java
new file mode 100644
index 0000000..a87bd57
--- /dev/null
+++ b/test/fixture/app/src/main/java/com/example/App.java
@@ -0,0 +1,15 @@
+package com.example;
+
+/**
+ * Hello world!
+ *
+ */
+public class App {
+    public static void main(String[] args) {
+        new App().sayHello();
+    }
+
+    public void sayHello() {
+        System.out.println("Hello World!");
+    }
+}
diff --git a/test/fixture/app/src/test/java/com/example/AppTest.java b/test/fixture/app/src/test/java/com/example/AppTest.java
new file mode 100644
index 0000000..00eb379
--- /dev/null
+++ b/test/fixture/app/src/test/java/com/example/AppTest.java
@@ -0,0 +1,18 @@
+package com.example;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+/**
+ * Unit test for simple App.
+ */
+public class AppTest {
+    /**
+     * Rigorous Test :-)
+     */
+    @Test
+    public void shouldAnswerWithTrue() {
+        new App().sayHello();
+    }
+}
diff --git a/test/fixture/gradle/wrapper/gradle-wrapper.jar b/test/fixture/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..c1962a7
Binary files /dev/null and b/test/fixture/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/test/fixture/gradle/wrapper/gradle-wrapper.properties b/test/fixture/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..37aef8d
--- /dev/null
+++ b/test/fixture/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/test/fixture/gradlew b/test/fixture/gradlew
new file mode 100755
index 0000000..aeb74cb
--- /dev/null
+++ b/test/fixture/gradlew
@@ -0,0 +1,245 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/test/fixture/gradlew.bat b/test/fixture/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/test/fixture/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/test/fixture/settings.gradle b/test/fixture/settings.gradle
new file mode 100644
index 0000000..45f8cbf
--- /dev/null
+++ b/test/fixture/settings.gradle
@@ -0,0 +1,25 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ *
+ * Detailed information about configuring a multi-project build in Gradle can be found
+ * in the user manual at https://docs.gradle.org/8.1.1/userguide/multi_project_builds.html
+ */
+pluginManagement {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        maven {
+            url "https://plugins.gradle.org/m2/"
+        }
+    }
+}
+
+plugins {
+    // Apply the foojay-resolver plugin to allow automatic download of JDKs
+    id 'org.gradle.toolchains.foojay-resolver-convention' version '0.7.0'
+}
+
+rootProject.name = 'app'
+include('app')