Test serialization of shared D8/R8 build metadata properties

Change-Id: I42d35996f4dd628ff3cde90843155ab71c463c24
diff --git a/src/main/java/com/android/tools/r8/metadata/impl/D8R8OptionsImpl.java b/src/main/java/com/android/tools/r8/metadata/impl/D8R8OptionsImpl.java
index 8402dd9..adc01e3 100644
--- a/src/main/java/com/android/tools/r8/metadata/impl/D8R8OptionsImpl.java
+++ b/src/main/java/com/android/tools/r8/metadata/impl/D8R8OptionsImpl.java
@@ -45,7 +45,7 @@
       InternalOptions options) {
     this.apiModelingOptions = apiModelingOptions;
     this.libraryDesugaringOptions = libraryDesugaringOptions;
-    this.minApiLevel = options.getMinApiLevel().getLevel();
+    this.minApiLevel = options.isGeneratingDex() ? options.getMinApiLevel().getLevel() : -1;
     this.isDebugModeEnabled = options.debug;
   }
 
diff --git a/src/test/java/com/android/tools/r8/metadata/R8BuildMetadataTest.java b/src/test/java/com/android/tools/r8/metadata/R8BuildMetadataTest.java
index 7ff0178..04b401c 100644
--- a/src/test/java/com/android/tools/r8/metadata/R8BuildMetadataTest.java
+++ b/src/test/java/com/android/tools/r8/metadata/R8BuildMetadataTest.java
@@ -7,6 +7,7 @@
 import static org.hamcrest.CoreMatchers.containsString;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
@@ -88,6 +89,10 @@
     assertNotNull(buildMetadata.getBaselineProfileRewritingOptions());
     assertNotNull(buildMetadata.getOptions());
     assertNotNull(buildMetadata.getOptions().getKeepAttributesOptions());
+    assertEquals(
+        parameters.isCfRuntime() ? -1 : parameters.getApiLevel().getLevel(),
+        buildMetadata.getOptions().getMinApiLevel());
+    assertFalse(buildMetadata.getOptions().isDebugModeEnabled());
     if (parameters.isDexRuntime()) {
       R8ResourceOptimizationOptions resourceOptimizationOptions =
           buildMetadata.getResourceOptimizationOptions();