diff options
Diffstat (limited to 'spec/scripts/lib/glfm/update_specification_spec.rb')
| -rw-r--r-- | spec/scripts/lib/glfm/update_specification_spec.rb | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/spec/scripts/lib/glfm/update_specification_spec.rb b/spec/scripts/lib/glfm/update_specification_spec.rb new file mode 100644 index 00000000000..e8d34b13efa --- /dev/null +++ b/spec/scripts/lib/glfm/update_specification_spec.rb @@ -0,0 +1,196 @@ +# frozen_string_literal: true +require 'fast_spec_helper' +require_relative '../../../../scripts/lib/glfm/update_specification' + +RSpec.describe Glfm::UpdateSpecification, '#process' do + subject { described_class.new } + + let(:ghfm_spec_txt_uri) { described_class::GHFM_SPEC_TXT_URI } + let(:ghfm_spec_txt_uri_io) { StringIO.new(ghfm_spec_txt_contents) } + let(:ghfm_spec_txt_path) { described_class::GHFM_SPEC_TXT_PATH } + let(:ghfm_spec_txt_local_io) { StringIO.new(ghfm_spec_txt_contents) } + + let(:glfm_intro_txt_path) { described_class::GLFM_INTRO_TXT_PATH } + let(:glfm_intro_txt_io) { StringIO.new(glfm_intro_txt_contents) } + let(:glfm_examples_txt_path) { described_class::GLFM_EXAMPLES_TXT_PATH } + let(:glfm_examples_txt_io) { StringIO.new(glfm_examples_txt_contents) } + let(:glfm_spec_txt_path) { described_class::GLFM_SPEC_TXT_PATH } + let(:glfm_spec_txt_io) { StringIO.new } + + let(:ghfm_spec_txt_contents) do + <<~GHFM_SPEC_TXT_CONTENTS + --- + title: GitHub Flavored Markdown Spec + version: 0.29 + date: '2019-04-06' + license: '[CC-BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)' + ... + + # Introduction + + ## What is GitHub Flavored Markdown? + + It's like GLFM, but with an H. + + # Section with Examples + + ## Strong + + ```````````````````````````````` example + __bold__ + . + <p><strong>bold</strong></p> + ```````````````````````````````` + + End of last GitHub examples section. + + <!-- END TESTS --> + + # Appendix + + Appendix text. + GHFM_SPEC_TXT_CONTENTS + end + + let(:glfm_intro_txt_contents) do + <<~GLFM_INTRO_TXT_CONTENTS + # Introduction + + ## What is GitLab Flavored Markdown? + + Intro text about GitLab Flavored Markdown. + GLFM_INTRO_TXT_CONTENTS + end + + let(:glfm_examples_txt_contents) do + <<~GLFM_EXAMPLES_TXT_CONTENTS + # GitLab-Specific Section with Examples + + Some examples. + GLFM_EXAMPLES_TXT_CONTENTS + end + + before do + # Mock default ENV var values + allow(ENV).to receive(:[]).with('UPDATE_GHFM_SPEC_TXT').and_return(nil) + allow(ENV).to receive(:[]).and_call_original + + # We mock out the URI and local file IO objects with real StringIO, instead of just mock + # objects. This gives better and more realistic coverage, while still avoiding + # actual network and filesystem I/O during the spec run. + allow(URI).to receive(:open).with(ghfm_spec_txt_uri) { ghfm_spec_txt_uri_io } + allow(File).to receive(:open).with(ghfm_spec_txt_path) { ghfm_spec_txt_local_io } + allow(File).to receive(:open).with(glfm_intro_txt_path) { glfm_intro_txt_io } + allow(File).to receive(:open).with(glfm_examples_txt_path) { glfm_examples_txt_io } + allow(File).to receive(:open).with(glfm_spec_txt_path, 'w') { glfm_spec_txt_io } + + # Prevent console output when running tests + allow(subject).to receive(:output) + end + + describe 'retrieving latest GHFM spec.txt' do + context 'when UPDATE_GHFM_SPEC_TXT is not true (default)' do + it 'does not download' do + expect(URI).not_to receive(:open).with(ghfm_spec_txt_uri) + + subject.process + + expect(reread_io(ghfm_spec_txt_local_io)).to eq(ghfm_spec_txt_contents) + end + end + + context 'when UPDATE_GHFM_SPEC_TXT is true' do + let(:ghfm_spec_txt_local_io) { StringIO.new } + + before do + allow(ENV).to receive(:[]).with('UPDATE_GHFM_SPEC_TXT').and_return('true') + allow(File).to receive(:open).with(ghfm_spec_txt_path, 'w') { ghfm_spec_txt_local_io } + end + + context 'with success' do + it 'downloads and saves' do + subject.process + + expect(reread_io(ghfm_spec_txt_local_io)).to eq(ghfm_spec_txt_contents) + end + end + + context 'with error handling' do + context 'with a version mismatch' do + let(:ghfm_spec_txt_contents) do + <<~GHFM_SPEC_TXT_CONTENTS + --- + title: GitHub Flavored Markdown Spec + version: 0.30 + ... + GHFM_SPEC_TXT_CONTENTS + end + + it 'raises an error' do + expect { subject.process }.to raise_error /version mismatch.*expected.*29.*got.*30/i + end + end + + context 'with a failed read of file lines' do + let(:ghfm_spec_txt_contents) { '' } + + it 'raises an error if lines cannot be read' do + expect { subject.process }.to raise_error /unable to read lines/i + end + end + + context 'with a failed re-read of file string' do + before do + allow(ghfm_spec_txt_uri_io).to receive(:read).and_return(nil) + end + + it 'raises an error if file is blank' do + expect { subject.process }.to raise_error /unable to read string/i + end + end + end + end + end + + describe 'writing GLFM spec.txt' do + let(:glfm_contents) { reread_io(glfm_spec_txt_io) } + + before do + subject.process + end + + it 'replaces the header text with the GitLab version' do + expect(glfm_contents).not_to match(/GitHub Flavored Markdown Spec/m) + expect(glfm_contents).not_to match(/^version: \d\.\d/m) + expect(glfm_contents).not_to match(/^date: /m) + expect(glfm_contents).not_to match(/^license: /m) + expect(glfm_contents).to match(/#{Regexp.escape(described_class::GLFM_SPEC_TXT_HEADER)}\n/mo) + end + + it 'replaces the intro section with the GitLab version' do + expect(glfm_contents).not_to match(/What is GitHub Flavored Markdown/m) + expect(glfm_contents).to match(/#{Regexp.escape(glfm_intro_txt_contents)}/m) + end + + it 'inserts the GitLab examples sections before the appendix section' do + expected = <<~GHFM_SPEC_TXT_CONTENTS + End of last GitHub examples section. + + # GitLab-Specific Section with Examples + + Some examples. + + <!-- END TESTS --> + + # Appendix + GHFM_SPEC_TXT_CONTENTS + expect(glfm_contents).to match(/#{Regexp.escape(expected)}/m) + end + end + + def reread_io(io) + # Reset the io StringIO to the beginning position of the buffer + io.seek(0) + io.read + end +end |