Reproduce resolution change from bridge hoisting

This reproduces a bug that manifests from bridge hoisting in the
presence of default interface methods. The bug only manifests for min
API >= 24.

Bug: b/369040938
Change-Id: I1e870dbc7852a361d4ecbee0108c233ac52aaa2e

src/test/java/com/android/tools/r8/classmerging/horizontal/HorizontalClassMergingVirtualMethodMergingWithLibraryTest.java

diff --git a/src/test/java/com/android/tools/r8/classmerging/horizontal/HorizontalClassMergingVirtualMethodMergingWithLibraryTest.java b/src/test/java/com/android/tools/r8/classmerging/horizontal/HorizontalClassMergingVirtualMethodMergingWithLibraryTest.java
new file mode 100644
index 0000000..e44992d
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/classmerging/horizontal/HorizontalClassMergingVirtualMethodMergingWithLibraryTest.java
@@ -0,0 +1,104 @@
+// Copyright (c) 2025, 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.classmerging.horizontal;
+
+import com.android.tools.r8.NeverClassInline;
+import com.android.tools.r8.NeverInline;
+import com.android.tools.r8.NoHorizontalClassMerging;
+import com.android.tools.r8.NoMethodStaticizing;
+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 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 HorizontalClassMergingVirtualMethodMergingWithLibraryTest extends TestBase {
+
+  @Parameter(0)
+  public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @Test
+  public void testD8() throws Exception {
+    testForD8(parameters)
+        .addInnerClasses(getClass())
+        .release()
+        .compile()
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutputLines("A.bridgeTarget()", "I.m()");
+  }
+
+  @Test
+  public void testR8() throws Exception {
+    testForR8(parameters)
+        .addInnerClasses(getClass())
+        .addKeepMainRule(Main.class)
+        .enableInliningAnnotations()
+        .enableNeverClassInliningAnnotations()
+        .enableNoHorizontalClassMergingAnnotations()
+        .enableNoMethodStaticizingAnnotations()
+        .enableNoVerticalClassMergingAnnotations()
+        .compile()
+        .run(parameters.getRuntime(), Main.class)
+        .applyIf(
+            parameters.canUseDefaultAndStaticInterfaceMethods(),
+            // TODO(b/369040938): Disallow bridge hoisting of B.m().
+            rr -> rr.assertSuccessWithOutputLines("A.bridgeTarget()", "A.bridgeTarget()"),
+            rr -> rr.assertSuccessWithOutputLines("A.bridgeTarget()", "I.m()"));
+  }
+
+  static class Main {
+
+    public static void main(String[] args) {
+      new B().m();
+      new D().m();
+    }
+  }
+
+  @NoVerticalClassMerging
+  interface I {
+
+    @NeverInline
+    default void m() {
+      System.out.println("I.m()");
+    }
+  }
+
+  static class A {
+
+    @NeverInline
+    @NoMethodStaticizing
+    public void bridgeTarget() {
+      System.out.println("A.bridgeTarget()");
+    }
+  }
+
+  @NeverClassInline
+  @NoHorizontalClassMerging
+  static class B extends A {
+
+    // A candidate for bridge hoisting. Hoisting this bridge changes the resolution of D.m(), since
+    // this method will then take precedence over I.m().
+    @NeverInline
+    public void m() {
+      bridgeTarget();
+    }
+  }
+
+  @NoHorizontalClassMerging
+  @NoVerticalClassMerging
+  abstract static class C extends A {}
+
+  @NeverClassInline
+  static class D extends C implements I {}
+}