describe 'Ridgepole::Client#diff -> migrate' do
  context 'when table already defined' do
    let(:dsl) {
      <<-EOS
        create_table "employees", primary_key: "emp_no", force: :cascade do |t|
          t.date    "birth_date", null: false
          t.string  "first_name", limit: 14, null: false
          t.string  "last_name", limit: 16, null: false
          t.string  "gender", limit: 1, null: false
          t.date    "hire_date", null: false
          t.integer "age", unsigned: true, null: false
          t.date    "updated_at"
        end

        create_table "employees", primary_key: "emp_no", force: :cascade do |t|
          t.date    "birth_date", null: false
          t.string  "first_name", limit: 14, null: false
          t.string  "last_name", limit: 16, null: false
          t.string  "gender", limit: 1, null: false
          t.date    "hire_date", null: false
          t.integer "age", unsigned: true, null: false
          t.date    "updated_at"
        end
      EOS
    }

    subject { client }

    it {
      expect {
        subject.diff(dsl)
      }.to raise_error('Table `employees` already defined')
    }
  end
end