Add more tests for .packages

tests/standalone/package/scenarios/packages_file_strange_formatting/empty_lines_test.dart

Index: tests/standalone/package/scenarios/packages_file_strange_formatting/empty_lines_test.dart
diff --git a/tests/standalone/package/scenarios/packages_option_only/packages_option_only_test.dart b/tests/standalone/package/scenarios/packages_file_strange_formatting/empty_lines_test.dart
similarity index 50%
copy from tests/standalone/package/scenarios/packages_option_only/packages_option_only_test.dart
copy to tests/standalone/package/scenarios/packages_file_strange_formatting/empty_lines_test.dart
index e873350c4012cb8209dd910fe3460c09a3f0cf1f..a5ec547341c9b80ed12dd1c13b176bb67dc6cda6 100644
--- a/tests/standalone/package/scenarios/packages_option_only/packages_option_only_test.dart
+++ b/tests/standalone/package/scenarios/packages_file_strange_formatting/empty_lines_test.dart
@@ -3,14 +3,22 @@
 // BSD-style license that can be found in the LICENSE file.
 
 // PackageRoot=none
-// Packages=sub/.packages
+// Packages=empty_lines.packages
 
-library packages_option_only_test;
+library empty_lines_test;
 
 import 'package:foo/foo.dart' as foo;
+import 'package:bar/bar.dart' as bar;
+import 'package:baz/baz.dart' as baz;
 
 main() {
-  if (foo.bar != 'hello') {
+  if (foo.foo != 'foo') {
     throw new Exception('package "foo" was not resolved correctly');
   }
+  if (bar.bar != 'bar') {
+    throw new Exception('package "bar" was not resolved correctly');
+  }
+  if (baz.baz != 'baz') {
+    throw new Exception('package "baz" was not resolved correctly');
+  }
 }