diff options
Diffstat (limited to 'spec/lib/banzai/filter/truncate_source_filter_spec.rb')
-rw-r--r-- | spec/lib/banzai/filter/truncate_source_filter_spec.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/spec/lib/banzai/filter/truncate_source_filter_spec.rb b/spec/lib/banzai/filter/truncate_source_filter_spec.rb new file mode 100644 index 00000000000..b0c6d91daa8 --- /dev/null +++ b/spec/lib/banzai/filter/truncate_source_filter_spec.rb @@ -0,0 +1,31 @@ +# frozen_string_literal: true + +require 'spec_helper' + +RSpec.describe Banzai::Filter::TruncateSourceFilter do + include FilterSpecHelper + + let(:short_text) { 'foo' * 10 } + let(:long_text) { ([short_text] * 10).join(' ') } + + it 'does nothing when limit is unspecified' do + output = filter(long_text) + + expect(output).to eq(long_text) + end + + it 'does nothing to a short-enough text' do + output = filter(short_text, limit: short_text.bytesize) + + expect(output).to eq(short_text) + end + + it 'truncates UTF-8 text by bytes, on a character boundary' do + utf8_text = '日本語の文字が大きい' + truncated = '日…' + + expect(filter(utf8_text, limit: truncated.bytesize)).to eq(truncated) + expect(filter(utf8_text, limit: utf8_text.bytesize)).to eq(utf8_text) + expect(filter(utf8_text, limit: utf8_text.mb_chars.size)).not_to eq(utf8_text) + end +end |