diff --git a/src/test/java/com/android/tools/r8/shaking/ifrule/PreconditionExtendsRemovedClassIfRuleTest.java b/src/test/java/com/android/tools/r8/shaking/ifrule/PreconditionExtendsRemovedClassIfRuleTest.java
new file mode 100644
index 0000000..c709731
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/shaking/ifrule/PreconditionExtendsRemovedClassIfRuleTest.java
@@ -0,0 +1,86 @@
+// Copyright (c) 2024, 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.shaking.ifrule;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsentIf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import com.android.tools.r8.NoUnusedInterfaceRemoval;
+import com.android.tools.r8.NoVerticalClassMerging;
+import com.android.tools.r8.R8TestBuilder;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.utils.BooleanUtils;
+import java.util.List;
+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 PreconditionExtendsRemovedClassIfRuleTest extends TestBase {
+
+  @Parameter(0)
+  public boolean enableUnusedInterfaceRemoval;
+
+  @Parameter(1)
+  public boolean enableVerticalClassMerging;
+
+  @Parameter(2)
+  public TestParameters parameters;
+
+  @Parameters(name = "{2}, unused: {0}, vertical: {1}")
+  public static List<Object[]> data() {
+    return buildParameters(
+        BooleanUtils.values(),
+        BooleanUtils.values(),
+        getTestParameters().withDefaultRuntimes().withMaximumApiLevel().build());
+  }
+
+  @Test
+  public void test() throws Exception {
+    testForR8(parameters.getBackend())
+        .addInnerClasses(getClass())
+        .addKeepMainRule(Main.class)
+        .addKeepRules(
+            "-if class * implements " + I.class.getTypeName(),
+            "-keep class <1> {",
+            "  void unused();",
+            "}")
+        .applyIf(
+            enableUnusedInterfaceRemoval,
+            R8TestBuilder::addNoUnusedInterfaceRemovalAnnotations,
+            R8TestBuilder::enableNoUnusedInterfaceRemovalAnnotations)
+        .applyIf(
+            enableVerticalClassMerging,
+            R8TestBuilder::addNoVerticalClassMergingAnnotations,
+            R8TestBuilder::enableNoVerticalClassMergingAnnotations)
+        .setMinApi(parameters)
+        .compile()
+        // TODO(b/337905171): Should keep unused.
+        .inspect(
+            inspector ->
+                assertThat(
+                    inspector.clazz(A.class).uniqueMethodWithOriginalName("unused"),
+                    isAbsentIf(enableUnusedInterfaceRemoval)));
+  }
+
+  public static class Main {
+
+    public static void main(String[] args) {
+      System.out.println(A.class);
+    }
+  }
+
+  @NoUnusedInterfaceRemoval
+  @NoVerticalClassMerging
+  public interface I {}
+
+  public static class A implements I {
+
+    // Kept by -if.
+    void unused() {}
+  }
+}
diff --git a/src/test/java/com/android/tools/r8/shaking/ifrule/SubsequentExtendsRemovedClassIfRuleTest.java b/src/test/java/com/android/tools/r8/shaking/ifrule/SubsequentExtendsRemovedClassIfRuleTest.java
new file mode 100644
index 0000000..0f99416
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/shaking/ifrule/SubsequentExtendsRemovedClassIfRuleTest.java
@@ -0,0 +1,83 @@
+// Copyright (c) 2024, 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.shaking.ifrule;
+
+import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsentIf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import com.android.tools.r8.NoUnusedInterfaceRemoval;
+import com.android.tools.r8.NoVerticalClassMerging;
+import com.android.tools.r8.R8TestBuilder;
+import com.android.tools.r8.TestBase;
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.utils.BooleanUtils;
+import java.util.List;
+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 SubsequentExtendsRemovedClassIfRuleTest extends TestBase {
+
+  @Parameter(0)
+  public boolean enableUnusedInterfaceRemoval;
+
+  @Parameter(1)
+  public boolean enableVerticalClassMerging;
+
+  @Parameter(2)
+  public TestParameters parameters;
+
+  @Parameters(name = "{2}, unused: {0}, vertical: {1}")
+  public static List<Object[]> data() {
+    return buildParameters(
+        BooleanUtils.values(),
+        BooleanUtils.values(),
+        getTestParameters().withDefaultRuntimes().withMaximumApiLevel().build());
+  }
+
+  @Test
+  public void test() throws Exception {
+    testForR8(parameters.getBackend())
+        .addInnerClasses(getClass())
+        .addKeepMainRule(Main.class)
+        .addKeepRules("-if interface *", "-keep class * implements <1> {", "  void unused();", "}")
+        .applyIf(
+            enableUnusedInterfaceRemoval,
+            R8TestBuilder::addNoUnusedInterfaceRemovalAnnotations,
+            R8TestBuilder::enableNoUnusedInterfaceRemovalAnnotations)
+        .applyIf(
+            enableVerticalClassMerging,
+            R8TestBuilder::addNoVerticalClassMergingAnnotations,
+            R8TestBuilder::enableNoVerticalClassMergingAnnotations)
+        .allowUnusedProguardConfigurationRules(enableUnusedInterfaceRemoval)
+        .setMinApi(parameters)
+        .compile()
+        // TODO(b/337905171): Should keep unused.
+        .inspect(
+            inspector ->
+                assertThat(
+                    inspector.clazz(A.class).uniqueMethodWithOriginalName("unused"),
+                    isAbsentIf(enableUnusedInterfaceRemoval)));
+  }
+
+  public static class Main {
+
+    public static void main(String[] args) {
+      System.out.println(A.class);
+    }
+  }
+
+  @NoUnusedInterfaceRemoval
+  @NoVerticalClassMerging
+  public interface I {}
+
+  public static class A implements I {
+
+    // Kept by -if.
+    void unused() {}
+  }
+}