Reintroduce Diff::LCS::Change#to_ary

-   This required some level of code remediation in the main library, but all
    tests now pass:

    -  Patchsets are now internally flattened one level explicitly, rather than
       using Array#flatten. This ensures that only the outer patchset array is
       flattened.

Fixes #48.

1 files changed, 24 insertions, 0 deletions

diff --git a/spec/change_spec.rb b/spec/change_spec.rb
index b5ad0cb..b8d3443 100644
--- a/spec/change_spec.rb
+++ b/spec/change_spec.rb
@@ -62,4 +62,28 @@ describe Diff::LCS::Change do
     it { should_not be_finished_a }
     it { should     be_finished_b }
   end
+
+  describe 'as array' do
+    it 'should be converted' do
+      action, position, element = described_class.new('!', 0, 'element')
+      expect(action).to eq '!'
+      expect(position).to eq 0
+      expect(element).to eq 'element'
+    end
+  end
+end
+
+describe Diff::LCS::ContextChange do
+  describe 'as array' do
+    it 'should be converted' do
+      action, (old_position, old_element), (new_position, new_element) =
+        described_class.new('!', 1, 'old_element', 2, 'new_element')
+
+      expect(action).to eq '!'
+      expect(old_position).to eq 1
+      expect(old_element).to eq 'old_element'
+      expect(new_position).to eq 2
+      expect(new_element).to eq 'new_element'
+    end
+  end
 end