Misc. tests for access modification

Change-Id: I4e16e4d3dc64111fec09ef0394f7351c5a64bfe2
diff --git a/src/test/java/com/android/tools/r8/accessrelaxation/InterfaceMethodAndSiblingConsistentRenamingPublicizerTest.java b/src/test/java/com/android/tools/r8/accessrelaxation/InterfaceMethodAndSiblingConsistentRenamingPublicizerTest.java
new file mode 100644
index 0000000..0cf8434
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/accessrelaxation/InterfaceMethodAndSiblingConsistentRenamingPublicizerTest.java
@@ -0,0 +1,129 @@
+// Copyright (c) 2023, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.accessrelaxation;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+
+import com.android.tools.r8.NeverClassInline;
+import com.android.tools.r8.NeverInline;
+import com.android.tools.r8.NoHorizontalClassMerging;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.utils.codeinspector.ClassSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class InterfaceMethodAndSiblingConsistentRenamingPublicizerTest extends TestBase {
+
+  @Parameter(0)
+  public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @Test
+  public void test() throws Exception {
+    testForR8(parameters.getBackend())
+        .addInnerClasses(getClass())
+        .addKeepMainRule(Main.class)
+        .enableInliningAnnotations()
+        .enableNeverClassInliningAnnotations()
+        .enableNoHorizontalClassMergingAnnotations()
+        .setMinApi(parameters)
+        .compile()
+        .inspect(
+            inspector -> {
+              // Check that B.foo(), C.foo() and I.foo() are all present in the output.
+              ClassSubject bClassSubject = inspector.clazz(B.class);
+              assertThat(bClassSubject, isPresent());
+
+              MethodSubject bMethodSubject = bClassSubject.uniqueMethodWithOriginalName("foo");
+              assertThat(bMethodSubject, isPresent());
+
+              ClassSubject cClassSubject = inspector.clazz(C.class);
+              assertThat(cClassSubject, isPresent());
+
+              MethodSubject cMethodSubject = cClassSubject.uniqueMethodWithOriginalName("foo");
+              assertThat(cMethodSubject, isPresent());
+
+              ClassSubject iClassSubject = inspector.clazz(I.class);
+              assertThat(iClassSubject, isPresent());
+
+              MethodSubject iMethodSubject = iClassSubject.uniqueMethodWithOriginalName("foo");
+              assertThat(iMethodSubject, isPresent());
+
+              // Check that B.foo() is renamed to one name, and C.foo() and I.foo() is renamed to
+              // another name. The reason for B.foo() being given another name is that we use a
+              // single naming state for the classes, which means that we must give B.foo() another
+              // name to ensure we do not introduce new method overriding relationships from
+              // publicizing.
+              assertNotEquals(bMethodSubject.getFinalName(), cMethodSubject.getFinalName());
+              assertEquals(cMethodSubject.getFinalName(), iMethodSubject.getFinalName());
+            })
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutputLines("B", "C", "C");
+  }
+
+  static class Main {
+
+    public static void main(String[] args) {
+      new B().foo();
+      new C().foo();
+      I i = System.currentTimeMillis() > 0 ? new D() : new E();
+      i.foo();
+    }
+  }
+
+  interface I {
+
+    void foo();
+  }
+
+  static class A {}
+
+  @NeverClassInline
+  @NoHorizontalClassMerging
+  static class B extends A {
+
+    @NeverInline
+    private void foo() {
+      System.out.println("B");
+    }
+  }
+
+  @NeverClassInline
+  @NoHorizontalClassMerging
+  static class C extends A {
+
+    // Implements I.foo().
+    @NeverInline
+    public void foo() {
+      System.out.println("C");
+    }
+  }
+
+  @NoHorizontalClassMerging
+  static class D extends C implements I {}
+
+  @NoHorizontalClassMerging
+  static class E extends C implements I {
+
+    @Override
+    public void foo() {
+      System.out.println("E");
+    }
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/accessrelaxation/PrivateOverrideOfPublicMethodTest.java b/src/test/java/com/android/tools/r8/accessrelaxation/PrivateOverrideOfPublicMethodTest.java
new file mode 100644
index 0000000..ea6a6a0
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/accessrelaxation/PrivateOverrideOfPublicMethodTest.java
@@ -0,0 +1,123 @@
+// Copyright (c) 2023, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.accessrelaxation;
+
+import static com.android.tools.r8.transformers.ClassFileTransformer.MethodPredicate.onName;
+
+import com.android.tools.r8.NeverInline;
+import com.android.tools.r8.NoVerticalClassMerging;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.ToolHelper.DexVm.Version;
+import com.android.tools.r8.utils.StringUtils;
+import java.io.IOException;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class PrivateOverrideOfPublicMethodTest extends TestBase {
+
+  private static final String EXPECTED_OUTPUT = StringUtils.lines("A", "B", "IAE", "A", "B", "A");
+  private static final String EXPECTED_OUTPUT_5_TO_6 =
+      StringUtils.lines("A", "A", "A", "A", "A", "A");
+  private static final String EXPECTED_OUTPUT_7 = StringUtils.lines("A", "B", "A", "A", "B", "A");
+
+  private static byte[] programClassFileData;
+
+  @Parameter(0)
+  public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @BeforeClass
+  public static void setup() throws IOException {
+    programClassFileData =
+        transformer(B.class)
+            .renameMethod(onName("bar"), "foo")
+            .transformMethodInsnInMethod(
+                "<init>",
+                (opcode, owner, name, descriptor, isInterface, continuation) ->
+                    continuation.visitMethodInsn(
+                        opcode, owner, name.equals("bar") ? "foo" : name, descriptor, isInterface))
+            .transform();
+  }
+
+  @Test
+  public void testRuntime() throws Exception {
+    testForRuntime(parameters)
+        .addProgramClasses(Main.class, A.class)
+        .addProgramClassFileData(programClassFileData)
+        .run(parameters.getRuntime(), Main.class)
+        .applyIf(
+            parameters.isDexRuntimeVersionNewerThanOrEqual(Version.V5_1_1)
+                && parameters.isDexRuntimeVersionOlderThanOrEqual(Version.V6_0_1),
+            runResult -> runResult.assertSuccessWithOutput(EXPECTED_OUTPUT_5_TO_6),
+            parameters.isDexRuntimeVersion(Version.V7_0_0),
+            runResult -> runResult.assertSuccessWithOutput(EXPECTED_OUTPUT_7),
+            runResult -> runResult.assertSuccessWithOutput(EXPECTED_OUTPUT));
+  }
+
+  @Test
+  public void testR8() throws Exception {
+    testForR8(parameters.getBackend())
+        .addProgramClasses(Main.class, A.class)
+        .addProgramClassFileData(programClassFileData)
+        .addKeepMainRule(Main.class)
+        .allowAccessModification()
+        .enableInliningAnnotations()
+        .enableNoVerticalClassMergingAnnotations()
+        .setMinApi(parameters)
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutput(EXPECTED_OUTPUT);
+  }
+
+  static class Main {
+
+    public static void main(String[] args) {
+      new A().foo();
+      try {
+        new B().foo();
+      } catch (IllegalAccessError e) {
+        System.out.println("IAE");
+      }
+      A a = System.currentTimeMillis() > 0 ? new A() : new B();
+      a.foo();
+      A b = System.currentTimeMillis() > 0 ? new B() : new A();
+      b.foo();
+    }
+  }
+
+  @NoVerticalClassMerging
+  static class A {
+
+    @NeverInline
+    public void foo() {
+      System.out.println("A");
+    }
+  }
+
+  static class B extends A {
+
+    B() {
+      if (System.currentTimeMillis() > 0) {
+        bar();
+      }
+    }
+
+    // Renamed to foo.
+    @NeverInline
+    private void bar() {
+      System.out.println("B");
+    }
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/accessrelaxation/PrivateShadowOfPrivateMethodTest.java b/src/test/java/com/android/tools/r8/accessrelaxation/PrivateShadowOfPrivateMethodTest.java
new file mode 100644
index 0000000..4698b94
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/accessrelaxation/PrivateShadowOfPrivateMethodTest.java
@@ -0,0 +1,104 @@
+// Copyright (c) 2023, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.accessrelaxation;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPrivate;
+import static com.android.tools.r8.utils.codeinspector.Matchers.isPublic;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+
+import com.android.tools.r8.NeverClassInline;
+import com.android.tools.r8.NeverInline;
+import com.android.tools.r8.NoVerticalClassMerging;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.utils.codeinspector.ClassSubject;
+import com.android.tools.r8.utils.codeinspector.MethodSubject;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class PrivateShadowOfPrivateMethodTest extends TestBase {
+
+  @Parameter(0)
+  public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @Test
+  public void test() throws Exception {
+    testForR8(parameters.getBackend())
+        .addInnerClasses(getClass())
+        .addKeepMainRule(Main.class)
+        .allowAccessModification()
+        .enableInliningAnnotations()
+        .enableNeverClassInliningAnnotations()
+        .enableNoVerticalClassMergingAnnotations()
+        .setMinApi(parameters)
+        .compile()
+        .inspect(
+            inspector -> {
+              // Check that A.foo() is publicized.
+              ClassSubject aClassSubject = inspector.clazz(A.class);
+              assertThat(aClassSubject, isPresent());
+
+              MethodSubject aMethodSubject = aClassSubject.uniqueMethodWithOriginalName("foo");
+              assertThat(aMethodSubject, isPresent());
+              assertThat(aMethodSubject, isPublic());
+
+              // Check that B.foo is still private.
+              ClassSubject bClassSubject = inspector.clazz(B.class);
+              assertThat(bClassSubject, isPresent());
+
+              MethodSubject bMethodSubject = bClassSubject.uniqueMethodWithOriginalName("foo");
+              assertThat(bMethodSubject, isPresent());
+              assertThat(bMethodSubject, isPrivate());
+
+              // Verify that the two methods still have the same name.
+              assertEquals(aMethodSubject.getFinalName(), bMethodSubject.getFinalName());
+            })
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutputLines("A", "B", "A", "A");
+  }
+
+  static class Main {
+
+    public static void main(String[] args) {
+      new A().foo();
+      new B().foo();
+      A a = System.currentTimeMillis() > 0 ? new A() : new B();
+      a.foo();
+      A b = System.currentTimeMillis() > 0 ? new B() : new A();
+      b.foo();
+    }
+  }
+
+  @NeverClassInline
+  @NoVerticalClassMerging
+  static class A {
+
+    @NeverInline
+    private void foo() {
+      System.out.println("A");
+    }
+  }
+
+  @NeverClassInline
+  static class B extends A {
+
+    @NeverInline
+    private void foo() {
+      System.out.println("B");
+    }
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/accessrelaxation/PublicOverrideOfPrivateMethodTest.java b/src/test/java/com/android/tools/r8/accessrelaxation/PublicOverrideOfPrivateMethodTest.java
new file mode 100644
index 0000000..09d3456
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/accessrelaxation/PublicOverrideOfPrivateMethodTest.java
@@ -0,0 +1,91 @@
+// Copyright (c) 2023, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.accessrelaxation;
+
+import com.android.tools.r8.NeverClassInline;
+import com.android.tools.r8.NeverInline;
+import com.android.tools.r8.NoVerticalClassMerging;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.utils.StringUtils;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class PublicOverrideOfPrivateMethodTest extends TestBase {
+
+  private static final String EXPECTED_OUTPUT = StringUtils.lines("A", "B", "B", "A", "B", "A");
+
+  @Parameter(0)
+  public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @Test
+  public void testRuntime() throws Exception {
+    testForRuntime(parameters)
+        .addInnerClasses(getClass())
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutput(EXPECTED_OUTPUT);
+  }
+
+  @Test
+  public void testR8() throws Exception {
+    testForR8(parameters.getBackend())
+        .addInnerClasses(getClass())
+        .addKeepMainRule(Main.class)
+        .allowAccessModification()
+        .enableInliningAnnotations()
+        .enableNeverClassInliningAnnotations()
+        .enableNoVerticalClassMergingAnnotations()
+        .setMinApi(parameters)
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutput(EXPECTED_OUTPUT);
+  }
+
+  static class Main {
+
+    public static void main(String[] args) {
+      new A().foo();
+      new B().foo();
+      A a = System.currentTimeMillis() > 0 ? new A() : new B();
+      a.foo();
+      A b = System.currentTimeMillis() > 0 ? new B() : new A();
+      b.foo();
+    }
+  }
+
+  @NeverClassInline
+  @NoVerticalClassMerging
+  static class A {
+
+    @NeverInline
+    private void foo() {
+      System.out.println("A");
+    }
+  }
+
+  @NeverClassInline
+  static class B extends A {
+
+    B() {
+      if (System.currentTimeMillis() > 0) {
+        foo();
+      }
+    }
+
+    @NeverInline
+    public void foo() {
+      System.out.println("B");
+    }
+  }
+}