require "spec_helper"

describe Form::Tag do
  subject { described_class.new(:p) }

  describe "#initialize" do
    it "yields instance" do
      tag = nil
      described_class.new(:p) {|t| tag = t}
      tag.should be_a(described_class)
    end

    it "evaluates block" do
      tag = nil
      described_class.new(:p) { tag = self }
      tag.should be_a(described_class)
    end

    context "argument position" do
      it "moves position" do
        tag = described_class.new(:p, class: "hello")
        tag.attributes.should eql(class: "hello")
        tag.content.should eql("")
      end

      it "keeps position" do
        tag = described_class.new(:p, "Hello", class: "hello")
        tag.attributes.should eql(class: "hello")
        tag.content.should eql("Hello")
      end
    end
  end

  describe "#<<" do
    it "appends content" do
      tag = described_class.new(:p)
      tag << "Hello"
      tag.to_s.should eql("<p>Hello</p>")
    end
  end

  describe "#void?" do
    it "detects void tag" do
      subject = described_class.new(:br)
      subject.should be_void
    end

    it "rejects as open tag" do
      subject = described_class.new(:p)
      subject.should_not be_void
    end
  end

  describe "#to_s" do
    it "renders tag" do
      subject = described_class.new(:p, "Hello")
      subject.to_s.should eql("<p>Hello</p>")
    end

    it "renders tag with attributes" do
      subject = described_class.new(:p, "Hello", class: "hello")
      subject.to_s.should eql(%[<p class="hello">Hello</p>])
    end

    it "renders open tag" do
      subject = described_class.new(:hr)
      subject.to_s.should eql("<hr>")
    end

    it "renders open tag with attributes" do
      subject = described_class.new(:hr, class: "separator")
      subject.to_s.should eql(%[<hr class="separator">])
    end

    it "renders boolean attributes" do
      subject = described_class.new(:input, autofocus: true)
      subject.to_s.should eql("<input autofocus>")
    end

    it "skips attributes with false value" do
      subject = described_class.new(:input, autofocus: false)
      subject.to_s.should eql("<input>")
    end

    it "skips attributes with empty value" do
      subject = described_class.new(:input, value: "")
      subject.to_s.should eql("<input>")
    end

    it "escapes attribute value" do
      subject = described_class.new(:img, alt: "<3")
      subject.to_s.should eql(%[<img alt="&lt;3">])
    end
  end

  describe "#tag" do
    it "renders simple tag" do
      subject = described_class.new(:p)
      subject.tag(:strong, "Hello")
      subject.to_s.should eql("<p><strong>Hello</strong></p>")
    end

    it "renders complex tag" do
      subject = described_class.new(:form, action: "some/path") do |form|
        form.tag :p do |p|
          p.tag :label, "E-mail", for: "user_email"
          p.tag :input, type: "email", autofocus: true
        end
      end

      subject.to_s.should have_tag("form[action='some/path']") do |form|
        form.should have_tag("p") do |p|
          p.should have_tag("label[for=user_email]")
          p.should have_tag("input[type=email][autofocus]")
        end
      end
    end
  end
end