Add tests for the gist tag.

Author: parkr

.rspec

@@ -0,0 +1,2 @@
+--color
+--format progress

jekyll-gist.gemspec

@@ -19,4 +19,6 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency "bundler", "~> 1.6"
   spec.add_development_dependency "rake"
+  spec.add_development_dependency "rspec"
+  spec.add_development_dependency "jekyll", "~> 2.0"
 end

spec/gist_tag_spec.rb

@@ -0,0 +1,57 @@
+require 'spec_helper'
+
+describe(Jekyll::Gist::GistTag) do
+  let(:doc) { doc_with_content(content) }
+  let(:content)  { "{% gist #{gist} %}" }
+  let(:output) do
+    doc.content = content
+    doc.output  = Jekyll::Renderer.new(doc.site, doc).run
+  end
+
+  context "simple gist" do
+    let(:gist) { 358471 }
+
+    it "produces the correct script tag" do
+      expect(output).to match(/<script src="https:\/\/gist.github.com\/#{gist}.js">\s<\/script>/)
+    end
+  end
+
+  context "private gist" do
+
+    context "when valid" do
+      let(:gist) { "mattr-/24081a1d93d2898ecf0f" }
+
+      it "produces the correct script tag" do
+        expect(output).to match(/<script src="https:\/\/gist.github.com\/#{gist}.js">\s<\/script>/)
+      end
+    end
+
+    context "with file specified" do
+      let(:gist)     { "mattr-/24081a1d93d2898ecf0f" }
+      let(:filename) { "myfile.ext" }
+      let(:content)  { "{% gist #{gist} #{filename} %}" }
+
+      it "produces the correct script tag" do
+        expect(output).to match(/<script src="https:\/\/gist.github.com\/#{gist}.js\?file=#{filename}">\s<\/script>/)
+      end
+    end
+
+    context "when invalid" do
+      let(:gist) { "mattr-24081a1d93d2898ecf0f" }
+
+      it "raises an error" do
+        expect(->{ output }).to raise_error
+      end
+    end
+
+  end
+
+  context "no gist id present" do
+    let(:gist) { "" }
+
+    it "raises an error" do
+      expect(->{ output }).to raise_error
+    end
+  end
+
+end

spec/spec_helper.rb

@@ -0,0 +1,44 @@
+TEST_DIR = File.dirname(__FILE__)
+TMP_DIR  = File.expand_path("../tmp", TEST_DIR)
+
+require 'jekyll'
+require File.expand_path("../lib/jekyll-gist.rb", TEST_DIR)
+
+Jekyll.logger.log_level = :error
+STDERR.reopen(test(?e, '/dev/null') ? '/dev/null' : 'NUL:')
+
+RSpec.configure do |config|
+  config.treat_symbols_as_metadata_keys_with_true_values = true
+  config.run_all_when_everything_filtered = true
+  config.filter_run :focus
+  config.order = 'random'
+
+  def tmp_dir(*files)
+    File.join(TMP_DIR, *files)
+  end
+
+  def source_dir(*files)
+    tmp_dir('source', *files)
+  end
+
+  def dest_dir(*files)
+    tmp_dir('dest', *files)
+  end
+
+  def doc_with_content(content, opts = {})
+    my_site = site
+    Jekyll::Document.new(source_dir('_test/doc.md'), {site: my_site, collection: collection(my_site)})
+  end
+
+  def collection(site, label = 'test')
+    Jekyll::Collection.new(site, label)
+  end
+
+  def site(opts = {})
+    conf = Jekyll::Utils.deep_merge_hashes(Jekyll::Configuration::DEFAULTS, opts.merge({
+      "source"      => source_dir,
+      "destination" => dest_dir
+    }))
+    Jekyll::Site.new(conf)
+  end
+end