Add a test for R8 type ref in D8 signature in R8 partial

Bug: b/410726575
Change-Id: Icd8f811b7b91f119fbd967ec3225280a7cd51029

src/test/java/com/android/tools/r8/partial/PartialCompilationIfClassRetentionAnnotationTest.java

diff --git a/src/test/java/com/android/tools/r8/partial/PartialCompilationIfClassRetentionAnnotationTest.java b/src/test/java/com/android/tools/r8/partial/PartialCompilationIfClassRetentionAnnotationTest.java
index b110164..69bbcee 100644
--- a/src/test/java/com/android/tools/r8/partial/PartialCompilationIfClassRetentionAnnotationTest.java
+++ b/src/test/java/com/android/tools/r8/partial/PartialCompilationIfClassRetentionAnnotationTest.java
@@ -32,7 +32,6 @@
 
   @Test
   public void test() throws Exception {
-    parameters.assumeCanUseR8Partial();
     testForR8Partial(parameters)
         .addR8ExcludedClasses(ClassRetentionAnnotation.class, Main.class)
         .addR8IncludedClasses(Unused.class)

src/test/java/com/android/tools/r8/partial/PartialCompilationSignatureRewritingTest.java

diff --git a/src/test/java/com/android/tools/r8/partial/PartialCompilationSignatureRewritingTest.java b/src/test/java/com/android/tools/r8/partial/PartialCompilationSignatureRewritingTest.java
new file mode 100644
index 0000000..77d2a87
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/partial/PartialCompilationSignatureRewritingTest.java
@@ -0,0 +1,75 @@
+// 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.partial;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsent;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+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 java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+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 PartialCompilationSignatureRewritingTest extends TestBase {
+
+  @Parameter(0)
+  public TestParameters parameters;
+
+  @Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimesAndApiLevels().build();
+  }
+
+  @Test
+  public void testD8() throws Exception {
+    parameters.assumeDexRuntime();
+    parameters.assumeNoPartialCompilation();
+    testForD8(parameters)
+        .addInnerClasses(getClass())
+        .release()
+        .run(parameters.getRuntime(), ExcludedClass.class)
+        .assertSuccessWithOutputLines("class " + IncludedClass.class.getTypeName());
+  }
+
+  @Test
+  public void testR8() throws Exception {
+    testForR8Partial(parameters)
+        .addR8ExcludedClasses(ExcludedClass.class)
+        .addR8IncludedClasses(IncludedClass.class)
+        .compile()
+        .apply(
+            compileResult -> {
+              // TODO(b/410726575): IncludedClass should be present.
+              ClassSubject includedClassSubject =
+                  compileResult.inspector().clazz(IncludedClass.class);
+              assertThat(includedClassSubject, isAbsent());
+              compileResult
+                  .run(parameters.getRuntime(), ExcludedClass.class)
+                  .assertFailureWithErrorThatThrows(ClassNotFoundException.class);
+            });
+  }
+
+  static class ExcludedClass<T extends IncludedClass> {
+
+    @SuppressWarnings("rawtypes")
+    public static void main(String[] args) {
+      for (TypeVariable<Class<ExcludedClass>> typeParameter :
+          ExcludedClass.class.getTypeParameters()) {
+        for (Type bound : typeParameter.getBounds()) {
+          System.out.println(bound);
+        }
+      }
+    }
+  }
+
+  static class IncludedClass {}
+}

src/test/testbase/java/com/android/tools/r8/TestBase.java

diff --git a/src/test/testbase/java/com/android/tools/r8/TestBase.java b/src/test/testbase/java/com/android/tools/r8/TestBase.java
index a1b39e9..b6f0971 100644
--- a/src/test/testbase/java/com/android/tools/r8/TestBase.java
+++ b/src/test/testbase/java/com/android/tools/r8/TestBase.java
@@ -256,6 +256,7 @@
   }
 
   public R8PartialTestBuilder testForR8Partial(TestParameters parameters) {
+    parameters.assumeCanUseR8Partial();
     return testForR8Partial(parameters.getBackend()).setMinApi(parameters);
   }
 

src/test/testbase/java/com/android/tools/r8/TestParameters.java

diff --git a/src/test/testbase/java/com/android/tools/r8/TestParameters.java b/src/test/testbase/java/com/android/tools/r8/TestParameters.java
index d980f2c..c9fcca5 100644
--- a/src/test/testbase/java/com/android/tools/r8/TestParameters.java
+++ b/src/test/testbase/java/com/android/tools/r8/TestParameters.java
@@ -279,6 +279,10 @@
     return this;
   }
 
+  public TestParameters assumeNoPartialCompilation() {
+    return assumeNoPartialCompilation(null);
+  }
+
   public TestParameters assumeNoPartialCompilation(String unusedReason) {
     assumeTrue(getPartialCompilationTestParameters().isNone());
     return this;