RemoveFinalizerFromZipTest.java

/*
 * Copyright 2023 the original author or authors.
 * <p>
 * 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
 * <p>
 * https://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.
 */

package org.openrewrite.java.migrate.util;

import org.junit.jupiter.api.Test;
import org.openrewrite.DocumentExample;
import org.openrewrite.test.RecipeSpec;
import org.openrewrite.test.RewriteTest;

import static org.openrewrite.java.Assertions.*;

class RemoveFinalizerFromZipTest implements RewriteTest {

    @Override
    public void defaults(RecipeSpec spec) {
        spec.recipe(new RemoveFinalizerFromZip()).allSources(s -> s.markers(javaVersion(12)));
    }

    @Test
    @DocumentExample
    void removeFinalizerForInflater() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Inflater;

          class FooInflater extends Inflater {
              public void test() {
                  FooInflater obj = new FooInflater();
                  obj.finalize();
              }
          }
           """, """
          import java.util.zip.Inflater;

          class FooInflater extends Inflater {
              public void test() {
                  FooInflater obj = new FooInflater();
              }
          }
           """));
    }

    @Test
    void removeCallsToSelfFinalize() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
                  finalize();
              }
          }
           """, """
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
              }
          }
           """));
    }

    @Test
    void removeCallsToThisFinalize() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
                  this.finalize();
              }
          }
           """, """
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
              }
          }
           """));
    }

    @Test
    void removeWhileKeepingSideEffects() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
                  new FooBar().finalize();
              }
          }
           """, """
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
                  new FooBar();
              }
          }
           """));
    }

    @Test
    void noChangeWithFinalizeOnObject() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
                  new Object().finalize();
              }
          }
           """));
    }

    @Test
    void noChangeWithoutFinalizerForInflater() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Inflater;

          class FooBar extends Inflater {
              public void test() {
                  FooBar obj = new FooBar();
              }
          }
           """));
    }

    @Test
    void removeFinalizerForDeflater() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Deflater;

          class FooBar extends Deflater {
              public void test() {
                  FooBar obj = new FooBar();
                  obj.finalize();
              }
          }
           """, """
          import java.util.zip.Deflater;

          class FooBar extends Deflater {
              public void test() {
                  FooBar obj = new FooBar();
              }
          }
           """));
    }

    @Test
    void noChangeWithoutFinalizerForDeflater() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.Deflater;

          class FooBar extends Deflater {
              public void test() {
                  FooBar obj = new FooBar();
              }
          }
           """));
    }

    @Test
    void removeFinalizerForZipFile() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.ZipFile;

          class FooBar extends ZipFile {
              FooBar(){
                  super("");
              }
              public void test() {
                  FooBar obj = new FooBar();
                  obj.finalize();
              }
          }
           """, """
          import java.util.zip.ZipFile;

          class FooBar extends ZipFile {
              FooBar(){
                  super("");
              }
              public void test() {
                  FooBar obj = new FooBar();
              }
          }
           """));
    }

    @Test
    void noChangeWithoutFinalizerForZipFile() {
        //language=java
        rewriteRun(java("""
          import java.util.zip.ZipFile;

          class FooBar extends ZipFile {
              FooBar(){
                  super("");
              }
              public void test() {
                  FooBar obj = new FooBar();
              }
          }
           """));
    }

    @Test
    void noChangeWithoutExtends() {
        //language=java
        rewriteRun(java("""
          class FooBar {
              public void test() {
                  new Object().finalize();
              }
          }
           """));
    }

    @Test
    void noChangeWithoutExtendsOrSelect() {
        //language=java
        rewriteRun(java("""
          class FooBar {
              public void test() {
                  finalize();
              }
          }
           """));
    }

    @Test
    void noChangeOnJava11() {
        //language=java
        rewriteRun(version(java("""
          import java.util.zip.ZipFile;
          
          class FooBar extends ZipFile {
              FooBar(){
                  super("");
              }
              public void test() {
                  finalize();
              }
          }
           """), 11));
    }
}