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# frozen_string_literal: true
require_relative 'test_helper'
describe IpynbDiff do
def diff_signs(diff)
diff.to_s(:text).scan(/.*\n/).map { |l| l[0] }.join('')
end
describe '.diff' do
let(:from_path) { FROM_PATH }
let(:to_path) { TO_PATH }
let(:from) { File.read(from_path) }
let(:to) { File.read(to_path) }
let(:include_frontmatter) { false }
let(:hide_images) { false }
subject { described_class.diff(from, to, include_frontmatter: include_frontmatter, hide_images: hide_images) }
context 'if preprocessing is active' do
it { is_expected.not_to include('<td>') }
end
context 'when to is nil' do
let(:to) { nil }
let(:from_path) { test_case_input_path('only_md') }
it 'all lines are removals' do
expect(diff_signs(subject)).to eq('-----')
end
end
context 'when from is nil' do
let(:from) { nil }
let(:to_path) { test_case_input_path('only_md') }
it 'all lines are additions' do
expect(diff_signs(subject)).to eq('+++++')
end
end
context 'when include_frontmatter is true' do
let(:include_frontmatter) { true }
it 'shows changes metadata in the metadata' do
expect(subject.to_s(:text)).to include('+ display_name: New Python 3 (ipykernel)')
end
end
context 'when hide_images is true' do
let(:hide_images) { true }
it 'hides images' do
expect(subject.to_s(:text)).to include(' [Hidden Image Output]')
end
end
context 'when include_frontmatter is false' do
it 'drops metadata from the diff' do
expect(subject.to_s(:text)).not_to include('+ display_name: New Python 3 (ipykernel)')
end
end
context 'when either notebook can not be processed' do
using RSpec::Parameterized::TableSyntax
where(:ctx, :from, :to) do
'because from is invalid' | 'a' | nil
'because from does not have the cell tag' | '{"metadata":[]}' | nil
'because to is invalid' | nil | 'a'
'because to does not have the cell tag' | nil | '{"metadata":[]}'
end
with_them do
it { is_expected.to be_nil }
end
end
end
describe '.transform' do
let(:notebook) { FROM_IPYNB }
let(:include_frontmatter) { false }
let(:hide_images) { false }
subject do
described_class.transform(notebook,
include_frontmatter: include_frontmatter,
hide_images: hide_images)
end
describe 'error cases' do
using RSpec::Parameterized::TableSyntax
where(:ctx, :notebook) do
'notebook is nil' | nil
'notebook is invalid' | 'a'
'notebook does not have cell' | '{"metadata":[]}'
end
with_them do
it { is_expected.to be_nil }
end
end
describe 'options' do
context 'when include_frontmatter is false' do
it { is_expected.not_to include('display_name: Python 3 (ipykernel)') }
end
context 'when include_frontmatter is true' do
let(:include_frontmatter) { true }
it { is_expected.to include('display_name: Python 3 (ipykernel)') }
end
context 'when hide_images is false' do
it { is_expected.not_to include('[Hidden Image Output]') }
end
context 'when hide_images is true' do
let(:hide_images) { true }
it { is_expected.to include(' [Hidden Image Output]') }
end
end
end
end
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