WIP: Test page's code blocks

spec/code_block_spec.rb

@@ -0,0 +1,61 @@
+require 'spec_helper'
+require 'kramdown'
+require 'ap'
+
+content = File.join(File.dirname(__FILE__), '..','content', '**', '*.md')
+PAGES = Dir.glob(content)
+
+def extract_code(parent)
+  codespans = []
+  parent.children.each do |child|
+
+    # Checks ... parent value hasn't got any sibling or begin with '\n'
+                                                                    #<<< TODO: ^^^ Why?
+    if child.type == :codespan \
+        && !child.value.nil? \                                      #<<< remove?, investigate
+        && !codespans.include?(child.value) \                       #<<< remove, keep context
+        && ((parent.children.size == 1) || (child.value[/^\n/]))    #<<< use start_with?
+
+      codespans.push child.value.gsub "\n",' '                      #<<< .split and add to codespans
+                                                                    #<<< add .trim - white space in the beginning and end
+    end
+
+    codespans += extract_code(child)
+  end
+  codespans
+end
+
+PAGES.each do |page|
+  generated_page = Kramdown::Document.new(File.read(page))          #<<< MD
+  codespans = extract_code(generated_page.root)                     #<<< lines of code, rename?
+  results = []                                                      #<<< to Hash: {codespan => result}
+
+  describe 'Command in Markdown file' do
+
+    it 'has a good syntax' do                                       #<<< passes syntax check
+      codespans.each do |code|
+        if code[/^\$/] #code starts with '$'
+          results.push([code,system('bash', '-n', '-c', code, "&>/dev/null")])       #<<< do not execute here
+          expect(results[-1][1]).to be_truthy,"Something wrong with: '#{code}'"
+        elsif code[/^\#/]                                           #<<< code.starts_with? ?#
+          #ap code
+        else #code starts with something else
+          #ap code
+        end
+      end
+    end
+
+    it 'does not begin with #' do
+      skip
+    end
+
+    it 'starts with $' do
+      skip
+    end
+
+    it 'runs dnf with sudo' do
+      skip
+    end
+
+  end
+end