function testInto_ThrowsAlreadyCalled() {
  var query = new lf.query.InsertBuilder(hr.db.getGlobal());

  var buildQuery = function() {
    var jobTable = db.getSchema().getJob();
    query.into(jobTable).into(jobTable);
  };

  // 520: into() has already been called.
  lf.testing.util.assertThrowsError(520, buildQuery);
}
Tests that Insert#into() fails if into() has already been called.