Fix D8CommandTest.folderLibAndClasspath on windows

Change Path comparison to accept relative and absolute Path.

Change-Id: I69a8083ce54775edb91114b0365e352e9ba8fdef
diff --git a/src/test/java/com/android/tools/r8/utils/D8CommandTest.java b/src/test/java/com/android/tools/r8/utils/D8CommandTest.java
index 5bae2ed..6f45137 100644
--- a/src/test/java/com/android/tools/r8/utils/D8CommandTest.java
+++ b/src/test/java/com/android/tools/r8/utils/D8CommandTest.java
@@ -172,11 +172,11 @@
         tmpClassesDir.toString());
     AndroidApp inputApp = ToolHelper.getApp(command);
     assertEquals(1, inputApp.getClasspathResourceProviders().size());
-    assertEquals(tmpClassesDir,
-        ((DirectoryClassFileProvider) inputApp.getClasspathResourceProviders().get(0)).getRoot());
+    assertTrue(Files.isSameFile(tmpClassesDir,
+        ((DirectoryClassFileProvider) inputApp.getClasspathResourceProviders().get(0)).getRoot()));
     assertEquals(1, inputApp.getLibraryResourceProviders().size());
-    assertEquals(tmpClassesDir,
-        ((DirectoryClassFileProvider) inputApp.getLibraryResourceProviders().get(0)).getRoot());
+    assertTrue(Files.isSameFile(tmpClassesDir,
+        ((DirectoryClassFileProvider) inputApp.getLibraryResourceProviders().get(0)).getRoot()));
   }
 
   @Test