add support for code-tag

lib/rbbcode/rbbcode_grammar.treetop

@@ -25,7 +25,7 @@
 
 grammar RbbCodeGrammar
   rule document
-    contents:(blockquote / list / paragraph / literal_text)*
+    contents:(blockquote / code / list / paragraph / literal_text)*
     break_ws*
     <RbbCode::DocumentNode>
   end
@@ -69,7 +69,23 @@ grammar RbbCodeGrammar
     breaks:break_ws*
     <RbbCode::BlockquoteLineNode>
   end
-
+
+  rule code
+    break_ws*
+    '[code]'
+    "\n"*
+    lines:code_line*
+    '[/code]'
+    <RbbCode::CodeNode>
+  end
+
+  rule code_line
+    contents:(!('[/code]' / "\n") (tag / .))+
+    [ \t]*
+    breaks:break_ws*
+    <RbbCode::CodeLineNode>
+  end
+
   rule list
     break_ws*
     '[list]'

test/code_test.rb

@@ -0,0 +1,99 @@
+require File.join(File.expand_path(File.dirname(__FILE__)), 'test_helper.rb')
+
+class TestCode < Minitest::Test
+  include RbbCode::Heredoc
+  include RbbCode::OutputAssertions
+
+  def test_empty_code_to_html
+    assert_converts_to(
+      '<code></code>',
+      '[code][/code]'
+    )
+  end
+
+  def test_single_line_code_to_html
+    assert_converts_to(
+      '<code><p>Quoth the raven</p></code>',
+      '[code]Quoth the raven[/code]'
+    )
+  end
+
+  def test_multi_line_code_to_html
+    assert_converts_to(
+      '<code><p>Quoth the</p><p>raven</p></code>',
+      heredoc(%(
+        [code]Quoth
+        the
+
+        raven[/code]
+      ))
+    )
+  end
+
+  def test_empty_code_to_markdown
+    assert_converts_to(
+      "    \n\n",
+      '[code][/code]',
+      output_format: :markdown
+    )
+  end
+
+  def test_single_line_code_to_markdown
+    assert_converts_to(
+      "    Quoth the raven\n\n",
+      '[code]Quoth the raven[/code]',
+      output_format: :markdown
+    )
+  end
+
+  def test_multi_line_code_to_markdown
+    assert_converts_to(
+      "    Quoth\n    the\n    \n    raven\n\n",
+      heredoc(%(
+        [code]Quoth
+        the
+
+        raven[/code]
+      )),
+      output_format: :markdown
+    )
+  end
+
+  # Test that we can handle arbitrary line breaks before or after the inner BBCode.
+  def test_pre_and_post_breaks
+    0.upto(3) do |pre_breaks|
+      0.upto(3).each do |post_breaks|
+        bb_code = '[code]' + ("\n" * pre_breaks) + 'Quoth the raven' + ("\n" * post_breaks) + '[/code]'
+        assert_converts_to(
+          '<code><p>Quoth the raven</p></code>',
+          bb_code,
+          {},
+          "HTML output not correct for #{pre_breaks} pre-break(s) and #{post_breaks} post-break(s)."
+        )
+      end
+    end
+
+    0.upto(3) do |pre_breaks|
+      0.upto(3).each do |post_breaks|
+        inner = heredoc(%(
+          Quoth
+
+          the
+
+          raven
+        ))
+        bb_code = '[code]' + ("\n" * pre_breaks) + inner + ("\n" * post_breaks) + '[/code]'
+        assert_converts_to(
+          '<code>
+            <p>Quoth</p>
+            <p>the</p>
+            <p>raven</p>
+          </code>',
+          bb_code,
+          {},
+          "HTML output not correct for #{pre_breaks} pre-break(s) and #{post_breaks} post-break(s)."
+        )
+      end
+    end
+  end
+end