add signing form specs

spec/signing_form_helper.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+module SigningFormHelper
+  module_function
+
+  def draw_canvas
+    page.find('canvas').click([], { x: 150, y: 100 })
+    page.execute_script <<~JS
+      const canvas = document.getElementsByTagName('canvas')[0];
+      const ctx = canvas.getContext('2d');
+
+      ctx.beginPath();
+      ctx.moveTo(150, 100);
+      ctx.lineTo(450, 100);
+      ctx.stroke();
+
+      ctx.beginPath();
+      ctx.moveTo(150, 100);
+      ctx.lineTo(150, 150);
+      ctx.stroke();
+    JS
+    sleep 1
+  end
+
+  def field_value(submitter, field_name)
+    field = template_field(submitter.template, field_name)
+
+    submitter.values[field['uuid']]
+  end
+
+  def template_field(template, field_name)
+    template.fields.find { |f| f['name'] == field_name || f['title'] == field_name } || {}
+  end
+end