Add reproduction of enum unboxing with invalid invoke special

Bug: b/245096779
Change-Id: I4ad6e65799605a127a16cb699a4c0ade1b634dbe
diff --git a/src/test/java/com/android/tools/r8/enumunboxing/PrivateEnumWithPrivateInvokeSpecialTest.java b/src/test/java/com/android/tools/r8/enumunboxing/PrivateEnumWithPrivateInvokeSpecialTest.java
new file mode 100644
index 0000000..5f8421c
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/enumunboxing/PrivateEnumWithPrivateInvokeSpecialTest.java
@@ -0,0 +1,83 @@
+// Copyright (c) 2022, 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.enumunboxing;
+
+import static org.junit.Assert.assertThrows;
+
+import com.android.tools.r8.CompilationFailedException;
+import com.android.tools.r8.DiagnosticsMatcher;
+import com.android.tools.r8.R8FullTestBuilder;
+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;
+
+/** This is a reproducation of b/245096779 */
+@RunWith(Parameterized.class)
+public class PrivateEnumWithPrivateInvokeSpecialTest extends TestBase {
+
+  @Parameter() public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @Test
+  public void testR8() throws Exception {
+    R8FullTestBuilder r8FullTestBuilder =
+        testForR8(parameters.getBackend())
+            .addInnerClasses(getClass())
+            .setMinApi(parameters.getApiLevel())
+            .addKeepMainRule(Main.class);
+    if (parameters.isCfRuntime()) {
+      // TODO(b/245096779): Should not throw an error.
+      assertThrows(
+          CompilationFailedException.class,
+          () -> {
+            r8FullTestBuilder.compileWithExpectedDiagnostics(
+                diagnostics ->
+                    diagnostics.assertErrorThatMatches(
+                        DiagnosticsMatcher.diagnosticException(AssertionError.class)));
+          });
+    } else {
+      r8FullTestBuilder
+          .run(parameters.getRuntime(), Main.class)
+          .assertSuccessWithOutputLines("FOO");
+    }
+  }
+
+  private static class Main {
+
+    private enum MyEnum {
+      FOO,
+      BAR;
+
+      private boolean isFoo() {
+        return this == FOO;
+      }
+
+      public MyEnum compute() {
+        if (isFoo()) {
+          return BAR;
+        }
+        return FOO;
+      }
+    }
+
+    public static void main(String[] args) {
+      MyEnum myEnum = args.length > 0 ? MyEnum.FOO : MyEnum.BAR;
+      if (myEnum.compute().isFoo()) {
+        System.out.println("FOO");
+      } else {
+        System.out.println("BAR");
+      }
+    }
+  }
+}