1 files changed, 126 insertions, 0 deletions
diff --git a/vendor/gems/ipynbdiff/spec/ipynbdiff_spec.rb b/vendor/gems/ipynbdiff/spec/ipynbdiff_spec.rb
new file mode 100644
index 00000000000..1c2a2188edf
--- /dev/null
+++ b/vendor/gems/ipynbdiff/spec/ipynbdiff_spec.rb
@@ -0,0 +1,126 @@
+# frozen_string_literal: true
+
+require 'ipynbdiff'
+require 'rspec'
+require 'rspec-parameterized'
+
+BASE_PATH = File.join(File.expand_path(File.dirname(__FILE__)),  'testdata')
+
+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) { File.join(BASE_PATH, 'from.ipynb') }
+    let(:to_path) { File.join(BASE_PATH,'to.ipynb') }
+    let(:from) { File.read(from_path) }
+    let(:to) { File.read(to_path) }
+    let(:include_frontmatter) { false }
+    let(:hide_images) { false }
+
+    subject { IpynbDiff.diff(from, to, include_frontmatter: include_frontmatter, hide_images: hide_images) }
+
+    context 'if preprocessing is active' do
+      it 'html tables are stripped' do
+        is_expected.to_not include('<td>')
+      end
+    end
+
+    context 'when to is nil' do
+      let(:to) { nil }
+      let(:from_path) { File.join(BASE_PATH, 'only_md', 'input.ipynb') }
+
+      it 'all lines are removals' do
+        expect(diff_signs(subject)).to eq('-----')
+      end
+    end
+
+    context 'when to is nil' do
+      let(:from) { nil }
+      let(:to_path) { File.join(BASE_PATH, 'only_md', 'input.ipynb') }
+
+      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 'should show 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 'should drop metadata from the diff' do
+        expect(subject.to_s(:text)).to_not 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
+    [nil, 'a', '{"metadata":[]}'].each do |invalid_nb|
+      context "when json is invalid (#{invalid_nb || 'nil'})" do
+        it 'is nil' do
+          expect(IpynbDiff.transform(invalid_nb)).to be_nil
+        end
+      end
+    end
+
+    context 'options' do
+      let(:include_frontmatter) { false }
+      let(:hide_images) { false }
+
+      subject do
+        IpynbDiff.transform(File.read(File.join(BASE_PATH, 'from.ipynb')),
+                            include_frontmatter: include_frontmatter,
+                            hide_images: hide_images)
+      end
+
+      context 'include_frontmatter is false' do
+        it { is_expected.to_not include('display_name: Python 3 (ipykernel)') }
+      end
+
+      context 'include_frontmatter is true' do
+        let(:include_frontmatter) { true }
+
+        it { is_expected.to include('display_name: Python 3 (ipykernel)') }
+      end
+
+      context 'hide_images is false' do
+        it { is_expected.not_to include('[Hidden Image Output]') }
+      end
+
+      context 'hide_images is true' do
+        let(:hide_images) { true }
+
+        it { is_expected.to include('    [Hidden Image Output]') }
+      end
+    end
+  end
+end