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Diffstat (limited to 'spec/lib/csv_builders/stream_spec.rb')
-rw-r--r-- | spec/lib/csv_builders/stream_spec.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/lib/csv_builders/stream_spec.rb b/spec/lib/csv_builders/stream_spec.rb new file mode 100644 index 00000000000..204baf965d0 --- /dev/null +++ b/spec/lib/csv_builders/stream_spec.rb @@ -0,0 +1,42 @@ +# 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 |