TARGET_WRAPPER_FINAL + "/gradle-wrapper.properties")
        new File(getProject().getProjectDir(), TARGET_WRAPPER_FINAL).mkdirs()
        wrapper.setDistributionPath("somepath")
        wrapper.setDistributionSha256Sum("somehash")
    }

    Wrapper getTask() {
        return wrapper
    }

    def "wrapper has correct defaults"() {
        given:
        wrapper = createTask(Wrapper.class)

        expect:

d81e0f23ade952b35e55333dd5f1821585e887c6d24305aeea2fbc8dad564b95 gradle/wrapper/gradle-wrapper.jar
----

Generating the actual checksum of the Wrapper JAR on macOS:

[source,bash,subs=+attributes]
----
$ shasum --algorithm=256 gradle/wrapper/gradle-wrapper.jar
d81e0f23ade952b35e55333dd5f1821585e887c6d24305aeea2fbc8dad564b95 gradle/wrapper/gradle-wrapper.jar
----

        executer.inDirectory(file("second")).withTasks("wrapper").run()

        then: "the checksum should be constant (unless there are code changes)"
        Hashing.sha256().hashFile(file("first/gradle/wrapper/gradle-wrapper.jar")) == EXPECTED_WRAPPER_JAR_HASH

        and:
        file("first/gradle/wrapper/gradle-wrapper.jar").md5Hash == file("second/gradle/wrapper/gradle-wrapper.jar").md5Hash

        expect:
        wrapper.distribution == new URI('http://server/test/gradle.zip')
        wrapper.configuration.distribution == new URI('http://server/test/gradle.zip')
        wrapper.configuration.distributionBase == 'testDistBase'
        wrapper.configuration.distributionPath == 'testDistPath'
        wrapper.configuration.zipBase == 'testZipBase'

            project.getTasks().register("wrapper", Wrapper.class, wrapper -> {
                wrapper.setGroup("Build Setup");
                wrapper.setDescription("Generates Gradle wrapper files.");
                wrapper.getNetworkTimeout().convention(WrapperDefaults.NETWORK_TIMEOUT);
                wrapper.getValidateDistributionUrl().convention(WrapperDefaults.VALIDATE_DISTRIBUTION_URL);

 */

package org.gradle.api.tasks.wrapper.internal;

import org.gradle.api.NonNullApi;
import org.gradle.api.tasks.wrapper.Wrapper;
import org.gradle.wrapper.Install;

@NonNullApi
public class WrapperDefaults {
    public static final String SCRIPT_PATH = "gradlew";
    public static final String JAR_FILE_PATH = "gradle/wrapper/gradle-wrapper.jar";

    final wrapper = new WrapperTestFixture(testDirectory)

    def "can apply wrapper plugin dynamically"() {
        when:
        run 'tasks'
        then:
        output.contains("wrapper - Generates Gradle wrapper files.")

        when:
        run 'wrapper'
        then:
        wrapper.generated()
    }

[[gradle_wrapper_basics]]
= Gradle Wrapper Basics

The **recommended way to execute any Gradle build** is with the Gradle Wrapper.

image::gradle-basic-2.png[]

The _Wrapper_ script invokes a declared version of Gradle, downloading it beforehand if necessary.

image::wrapper-workflow.png[]

The Wrapper is available as a `gradlew` or `gradlew.bat` file.

The Wrapper provides the following benefits:

public abstract class ModelType<T> {

    public static final ModelType<Object> UNTYPED = ModelType.of(Object.class);

    private final TypeWrapper wrapper;

    private ModelType(TypeWrapper wrapper) {
        this.wrapper = wrapper;
    }

    protected ModelType() {
        this.wrapper = wrap(new TypeToken<T>(getClass()) {
        }.getType());
    }

    public static <T> ModelType<T> of(Class<T> clazz) {

 */

package org.gradle.api.tasks.wrapper.internal;

import com.google.common.collect.ImmutableList;
import com.google.common.io.ByteStreams;
import org.gradle.api.GradleException;
import org.gradle.api.NonNullApi;
import org.gradle.api.UncheckedIOException;
import org.gradle.api.internal.plugins.StartScriptGenerator;
import org.gradle.api.tasks.wrapper.Wrapper;
import org.gradle.api.tasks.wrapper.Wrapper.PathBase;