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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe CsvBuilders::Stream do
let(:event_1) { double(title: 'Added salt', description: 'A teaspoon') }
let(:event_2) { double(title: 'Added sugar', description: 'Just a pinch') }
let(:fake_relation) { FakeRelation.new([event_1, event_2]) }
subject(:builder) { described_class.new(fake_relation, 'Title' => 'title', 'Description' => 'description') }
describe '#render' do
before do
stub_const('FakeRelation', Array)
FakeRelation.class_eval do
def find_each(&block)
each(&block)
end
end
end
it 'returns a lazy enumerator' do
expect(builder.render).to be_an(Enumerator::Lazy)
end
it 'returns all rows up to default max value' do
expect(builder.render.to_a).to eq([
"Title,Description\n",
"Added salt,A teaspoon\n",
"Added sugar,Just a pinch\n"
])
end
it 'truncates to max rows' do
expect(builder.render(1).to_a).to eq([
"Title,Description\n",
"Added salt,A teaspoon\n"
])
end
end
end
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