# -*- coding: utf-8 -*-
require "sixarm_ruby_markdown_test"

describe SixArm::Markdown::Headline do

  let(:text){ "Foo Goo Hoo" }
  let(:anchor_default) { "foo-goo-hoo"}
  let(:anchor_custom) { "bar-car-dar"}
  let(:level_default){ 1 }
  let(:level_custom){ 3 }
  let(:link_default){ "[Foo Goo Hoo](#foo-goo-hoo)" }
  let(:link_custom){ "[My Link Text](#my-link-anchor)" }
  let(:headline){ SixArm::Markdown::Headline.new(text: text) }
  let(:some_atypical_characters){ "!@#$%^&*(){}[]|;':<>,.?/" }

  describe "#text" do

    it "return text" do
      expect(headline.text).must_equal text
    end

  end

  describe "#anchor" do

    describe "with default, which is no anchor, thus uses autogeneration" do

      it "return default anchor" do
        headline = SixArm::Markdown::Headline.new(text: text) 
        expect(headline.anchor).must_equal anchor_default
      end

    end
    
    describe "with text with with atypical characters, which will be excised in the anchor" do

      it "return default anchor" do
        headline = SixArm::Markdown::Headline.new(text: some_atypical_characters + text + some_atypical_characters) 
        expect(headline.anchor).must_equal anchor_default
      end

    end

    describe "with custom anchor" do

      it "return custom anchor" do
        headline = SixArm::Markdown::Headline.new(text: text, anchor: anchor_custom)
        expect(headline.anchor).must_equal anchor_custom
      end

    end

  end

  describe "#level" do

    describe "with default, which is no level, thus uses default level which is 1" do

      it "return default level, which is 1 i.e. suitable for HTML H1" do
        headline = SixArm::Markdown::Headline.new(text: text) 
        expect(headline.level).must_equal level_default
      end

    end

    describe "with custom level" do

      it "return custom level" do
        headline = SixArm::Markdown::Headline.new(text: text, level: level_custom) 
        expect(headline.level).must_equal level_custom
      end

    end

  end

  describe "#link" do

    describe "with default, which is no link, thus uses autogeneration" do

      it "return default link, which is the Markdown formatting of the text and anchor" do
        headline = SixArm::Markdown::Headline.new(text: text) 
        expect(headline.link).must_equal link_default
      end

    end

    describe "with text with atypical characters, which will be excised in the link" do

      it "return default link, which is the Markdown formatting of the text and anchor" do
        text_atypical = some_atypical_characters + text + some_atypical_characters
        link_atypical = "[#{text_atypical}](\##{anchor_default})"
        headline = SixArm::Markdown::Headline.new(text: text_atypical) 
        expect(headline.link).must_equal link_atypical
      end

    end

    describe "with custom link" do

      it "return custom link" do
        headline = SixArm::Markdown::Headline.new(text: text, link: link_custom) 
        expect(headline.link).must_equal link_custom
      end

    end

  end

  describe ".parse_line" do

    it "parse a headline that starts with hash characters" do
      line = "### Hello"
      headline = SixArm::Markdown::Headline::parse_line(line)
      expect(headline.text).must_equal "Hello"
      expect(headline.level).must_equal 3
    end

    it "parse a headline that starts with equal characters" do
      line = "=== Hello"
      headline = SixArm::Markdown::Headline::parse_line(line)
      expect(headline.text).must_equal "Hello"
      expect(headline.level).must_equal 3
    end

    it "trim extraneous characters i.e. leading/trailing whitespace and leading/trailing hashes" do
      line = "   ###   Hello   ###   \n"
      headline = SixArm::Markdown::Headline::parse_line(line)
      expect(headline.text).must_equal "Hello"
      expect(headline.level).must_equal 3
    end

  end

  describe ".parse_line_level" do

    it "return level" do
      line = "### Hello"
      expect = 3
      actual = SixArm::Markdown::Headline::parse_line_level(line)
      expect(actual).must_equal expect
    end

  end

  describe ".trim_line" do

    it "trim extraneous characters i.e. leading/trailing spaces and leading/trailing hashes" do
      line = "   ###   Hello   ###   "
      expect = "Hello"
      actual = SixArm::Markdown::Headline::trim_line(line)
      expect(actual).must_equal actual
    end

  end

  describe ".text_to_anchor" do

    it "return anchor, which is the text as lowercase, and replacing every run of non-word characters with a dash" do
      text = "Foo ! Goo ! Hoo"
      expect = "foo-goo-hoo"
      actual = SixArm::Markdown::Headline::text_to_anchor(text)
      expect(actual).must_equal expect
    end

  end

end