existing = create(:changeset_tag)
tag = build(:changeset_tag, :changeset => existing.changeset, :k => existing.k, :v => existing.v)
assert_predicate tag, :new_record?
existing = create(:changeset_tag)
tag = build(:changeset_tag, :changeset => existing.changeset, :k => existing.k, :v => existing.v)
assert_predicate tag, :new_record?