AutoBazelRepository in empty package fails

[fzakaria]

bazel/tools/java/runfiles/AutoBazelRepositoryProcessor.java

Line 99 in 652f83e

out.printf("package %s;\n", generatedClassPackage);

Here is a sample:

import com.google.devtools.build.runfiles.AutoBazelRepository;
import com.google.devtools.build.runfiles.Runfiles;
import org.junit.Test;

import java.nio.file.Path;
import java.nio.file.Paths;

@AutoBazelRepository
public class ExampleTest {

    @Test
    public void doNothingTest() throws Exception {
        Runfiles.Preloaded runfiles = Runfiles.preload();
        String path = runfiles.withSourceRepository(AutoBazelRepository_ExampleTest.NAME)
                .rlocation("my_workspace/path/to/my/data.txt");
    }
}

This produces a generated class for the following:

package ;

class AutoBazelRepository_ExampleTest {
  /**
   * The canonical name of the repository containing the Bazel target that
   * compiled {@link TestContainerExampleTest}.
   */
  static final String NAME = "";

  private AutoBazelRepository_ExampleTest () {}
}

Please notice the package ; this fails to compile

bazel-out/darwin_arm64-fastbuild/bin/src/_javac/ExampleTest/TExampleTest_sources/AutoBazelRepository_ExampleTest.java:1: error: <identifier> expected
package ;