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require 'spec_helper'
describe StringDirection::CharactersStrategy do
describe '#run' do
let(:english) { 'English' }
let(:arabic) { 'العربية' }
subject { described_class.new.run(string) }
context 'when both left-to-right and right-to-left characters are present' do
let(:string) { arabic + english }
it "returns 'bidi'" do
expect(subject).to eq 'bidi'
end
end
context 'when right-to-left character are present but none of left-to-right' do
let(:string) { arabic }
it "returns 'rtl'" do
expect(subject).to eq 'rtl'
end
end
context 'when left-to-right character are present but none of right-to-left' do
let(:string) { english }
it "returns 'ltr'" do
expect(subject).to eq 'ltr'
end
end
context 'when neither left-to-right nor right-to-left characters are present' do
let(:string) { ' ' }
it 'returns nil' do
expect(subject).to be_nil
end
end
context 'when default right-to-left scripts are changed' do
let(:new_rtl_script) { 'Latin' }
let(:old_rtl_script) { 'Arabic' }
context 'when there are characters from an added right-to-left script' do
let(:string) { english }
it 'treats them as right-to-left chracters' do
StringDirection.configure do |config|
config.rtl_scripts << new_rtl_script
end
expect(subject).to eq 'rtl'
end
end
context 'when there are characters from a deleted right-to-left script ' do
let(:string) { arabic }
it 'treats them as left-to-right characters' do
StringDirection.configure do |config|
config.rtl_scripts.delete(old_rtl_script)
end
expect(subject).to eq 'ltr'
end
end
after :each do
StringDirection.reset_configuration
end
end
context 'when special characters are present' do
let(:string) do
mark = "\u0903"
punctuation = '_'
symbol = '€'
separator = ' '
other = "\u0005"
arabic + mark + punctuation + symbol + separator + other
end
it 'ignores them' do
expect(subject).to eq 'rtl'
end
end
context 'when an object responding to #to_s is given' do
let(:string) do
class StringDirection::TestObject
def to_s
'English'
end
end
StringDirection::TestObject.new
end
it 'takes as string the result of #to_s method' do
expect(subject).to eq('ltr')
end
end
end
end
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