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# frozen_string_literal: true
require_relative '../test_helper'
describe IpynbDiff::Transformer do
describe '.transform' do
using RSpec::Parameterized::TableSyntax
let!(:default_config) { { include_frontmatter: false, hide_images: false } }
let(:test_case) { read_test_case(test_case_name) }
let(:notebook) { test_case[:input] || FROM_IPYNB }
let(:config) { {} }
subject { described_class.new(**default_config.merge(config)).transform(notebook) }
where(:ctx, :test_case_name, :config) do
'renders metadata' | 'no_cells' | { include_frontmatter: true }
'is empty for no cells, but metadata is false' | 'no_cells_no_metadata' | {}
'adds markdown cell' | 'only_md' | {}
'adds block with only one line of markdown' | 'single_line_md' | {}
'adds raw block' | 'only_raw' | {}
'code cell, but no output' | 'only_code' | {}
'code cell, but no language' | 'only_code_no_language' | {}
'code cell, but no kernelspec' | 'only_code_no_kernelspec' | {}
'code cell, but no nb metadata' | 'only_code_no_metadata' | {}
'text output' | 'text_output' | {}
'ignores html output' | 'ignore_html_output' | {}
'extracts png output along with text' | 'text_png_output' | {}
'embeds svg as image' | 'svg' | {}
'extracts latex output' | 'latex_output' | {}
'extracts error output' | 'error_output' | {}
'does not fetch tags if there is no cell metadata' | 'no_metadata_on_cell' | {}
'generates :percent decorator' | 'percent_decorator' | {}
'parses stream output' | 'stream_text' | {}
'ignores unknown output type' | 'unknown_output_type' | {}
'handles backslash correctly' | 'backslash_as_last_char' | {}
'multiline png output' | 'multiline_png_output' | {}
'hides images when option passed' | 'hide_images' | { hide_images: true }
'\n within source lines' | 'source_with_linebreak' | { hide_images: true }
end
with_them do
it 'generates the expected markdown' do
expect(subject.as_text).to eq test_case[:expected_markdown]
end
it 'marks the lines correctly' do
blocks = subject.blocks.map { |b| b[:source_symbol] }.join("\n")
expect(blocks).to eq test_case[:expected_symbols]
end
end
describe 'Source line map' do
let(:config) { { include_frontmatter: false } }
let(:test_case_name) { 'text_png_output' }
it 'generates the correct transformed to source line map' do
line_numbers = subject.blocks.map { |b| b[:source_line] }.join("\n")
expect(line_numbers).to eq test_case[:expected_line_numbers]
end
end
context 'when json is invalid' do
let(:notebook) { 'a' }
it 'raises error' do
expect { subject }.to raise_error(IpynbDiff::InvalidNotebookError)
end
end
context 'when it does not have the cell tag' do
let(:notebook) { '{"metadata":[]}' }
it 'raises error' do
expect { subject }.to raise_error(IpynbDiff::InvalidNotebookError)
end
end
context 'when notebook can not be parsed' do
let(:notebook) { '{"cells":[]}' }
before do
allow(Oj::Parser.usual).to receive(:parse).and_return(nil)
end
it 'raises error' do
expect { subject }.to raise_error(IpynbDiff::InvalidNotebookError)
end
end
end
end
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