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# frozen_string_literal: true
RSpec.describe Morpher::Transform do
describe '#array' do
subject do
Morpher::Transform::STRING
end
it 'returns array' do
expect(subject.array).to eql(
Morpher::Transform::Array.new(subject)
)
end
end
describe '#maybe' do
subject do
Morpher::Transform::STRING
end
it 'returns maybe' do
expect(subject.maybe).to eql(
Morpher::Transform::Maybe.new(subject)
)
end
end
describe '#seq' do
subject do
Morpher::Transform::STRING
end
let(:other) do
Morpher::Transform::Success.new(:upcase.to_proc)
end
it 'returns sequence' do
expect(subject.seq(other)).to eql(
Morpher::Transform::Sequence.new([subject, other])
)
end
end
describe '#to_proc' do
subject do
Morpher::Transform::STRING
end
it 'returns proc' do
expect(subject.to_proc).to be_instance_of(Proc)
end
it 'executes #call when evaluated' do
aggregate_failures do
expect(subject.to_proc.call('a').from_right).to be('a')
expect(subject.to_proc.call(1).lmap(&:compact_message).from_left).to eql(
'String: Expected: String but got: Integer'
)
end
end
end
end
|
