Add Pyplot.xkcd wrapper

Author: mrkn

lib/matplotlib/pyplot.rb

@@ -18,6 +18,10 @@ def __pyobj__
         @pyplot
       end
 
+      def xkcd(scale: 1, length: 100, randomness: 2, &block)
+        PyCall.with(super.(scale: scale, length: length, randomness: randomness), &block)
+      end
+
       def method_missing(name, *args, **kwargs)
         return super unless PyCall.hasattr?(@pyplot, name)
         PyCall.getattr(@pyplot, name)

spec/matplotlib/pyplot_spec.rb

@@ -0,0 +1,23 @@
+require 'spec_helper'
+require 'matplotlib/pyplot'
+
+module Matplotlib
+  ::RSpec.describe Pyplot do
+    describe '.xkcd' do
+      specify do
+        expect { |b| Pyplot.xkcd(&b) }.to yield_control
+      end
+
+      specify do
+        saved_font_family = Matplotlib.rcParams['font.family']
+        saved_path_sketch = Matplotlib.rcParams['path.sketch']
+        Pyplot.xkcd(scale: 42, length: 43, randomness: 44) do
+          expect(Matplotlib.rcParams['font.family']).to include('xkcd')
+          expect(Matplotlib.rcParams['path.sketch']).to eq(PyCall.tuple(42, 43, 44))
+        end
+        expect(Matplotlib.rcParams['font.family']).to eq(saved_font_family)
+        expect(Matplotlib.rcParams['path.sketch']).to eq(saved_path_sketch)
+      end
+    end
+  end
+end