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# 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
<<~MARKDOWN
---
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.
MARKDOWN
end
let(:glfm_intro_txt_contents) do
# language=Markdown
<<~MARKDOWN
# Introduction
## What is GitLab Flavored Markdown?
Intro text about GitLab Flavored Markdown.
MARKDOWN
end
let(:glfm_examples_txt_contents) do
<<~MARKDOWN
# GitLab-Specific Section with Examples
Some examples.
MARKDOWN
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
<<~MARKDOWN
---
title: GitHub Flavored Markdown Spec
version: 0.30
...
MARKDOWN
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 = <<~MARKDOWN
End of last GitHub examples section.
# GitLab-Specific Section with Examples
Some examples.
<!-- END TESTS -->
# Appendix
MARKDOWN
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
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