test_plantuml.rb

# frozen_string_literal: true

require 'test/unit'
require 'asciidoctor'
require 'stringio'
require 'nokogiri'
require 'asciidoctor-plantuml'

DOC_BASIC = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="png"]
  .Title Of this
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

DOC_BASIC2 = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="png"]
  .Title Of this
  [[fig-xref]]
  ----
  @startuml
  User -> (Start)
  User --> (Use the application) : Label
  @enduml
  ----
ENDOFSTRING

DOC_BASIC3 = <<~ENDOFSTRING
  = Hello Compound PlantUML!

  [plantuml, format="png"]
  ----
  [COMP1]
  [COMP2]
  [COMP1] -> [COMP2]
  [COMP2] --> [COMP3]
  ----
ENDOFSTRING

DOC_ID = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="png", id="myId"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

DOC_DIM = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="png", width="100px", height="50px"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

DOC_ALT = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="png", alt="alt"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

DOC_BAD_FORMAT = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="jpg"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

DOC_MULTI = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="png"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----

  [plantuml, format="png"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----

  [plantuml, format="txt"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

DOC_TXT = <<~ENDOFSTRING
  = Hello PlantUML!

  [plantuml, format="txt"]
  ----
  User -> (Start)
  User --> (Use the application) : Label
  ----
ENDOFSTRING

class PlantUmlTest < Test::Unit::TestCase
  GENURL = 'http://localhost:8080/plantuml/png/U9npA2v9B2efpStX2YrEBLBGjLFG20Q9Q4Bv804WIw4a8rKXiQ0W9pCviIGpFqzJmKh19p4fDOVB8JKl1QWT05kd5wq0'
  GENURL2 = 'http://localhost:8080/plantuml/png/U9npA2v9B2efpStXYdRszmqmZ8NGHh4mleAkdGAAa15G22Pc7Clba9gN0jGE00W75Cm0'

  def setup
    Asciidoctor::PlantUml.configure do |c|
      c.url = 'http://localhost:8080/plantuml'
      c.txt_enable = true
    end
  end

  def test_plantuml_block_processor
    html = ::Asciidoctor.convert(StringIO.new(DOC_BASIC), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')

    assert_equal elements.size, 1

    element = elements.first

    assert_equal GENURL, element['src']
  end

  def test_plantuml_block_processor2
    html = ::Asciidoctor.convert(StringIO.new(DOC_BASIC2), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')

    assert_equal elements.size, 1

    element = elements.first

    assert_equal GENURL, element['src']
  end

  def test_plantuml_block_processor3
    html = ::Asciidoctor.convert(StringIO.new(DOC_BASIC3), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')

    assert_equal elements.size, 1

    element = elements.first

    assert_equal GENURL2, element['src']
  end

  def test_plantuml_id_attribute
    html = ::Asciidoctor.convert(StringIO.new(DOC_ID), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')

    assert_equal elements.size, 1
    element = elements.first

    assert_equal 'myId', element['id']
  end

  def test_plantuml_dimension_attribute
    html = ::Asciidoctor.convert(StringIO.new(DOC_DIM), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')

    assert_equal elements.size, 1
    element = elements.first

    assert_equal '100px', element['width']
    assert_equal '50px', element['height']
  end

  def test_plantuml_alt_attribute
    html = ::Asciidoctor.convert(StringIO.new(DOC_ALT), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')

    assert_equal elements.size, 1
    element = elements.first

    assert_equal 'alt', element['alt']
  end

  def test_should_show_bad_format
    html = ::Asciidoctor.convert(StringIO.new(DOC_BAD_FORMAT), backend: 'html5')

    page = Nokogiri::HTML(html)

    elements = page.css('pre.plantuml-error')
    assert_equal elements.size, 1
  end

  def test_plantuml_multiple
    html = ::Asciidoctor.convert(StringIO.new(DOC_MULTI), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')
    assert elements.size >= 2

    elements = page.css('.plantuml-error')
    assert_equal elements.size, 0
  end

  def test_plantuml_bad_server
    Asciidoctor::PlantUml.configure do |c|
      c.url = 'http://nonexistent.com/plantuml'
    end

    html = ::Asciidoctor.convert(StringIO.new(DOC_MULTI), backend: 'html5')
    page = Nokogiri::HTML(html)

    elements = page.css('img.plantuml')
    assert_equal 3, elements.size

    elements = page.css('.plantuml-error')
    assert_equal 0, elements.size
  end

  def test_plantuml_invalid_uri
    Asciidoctor::PlantUml.configure do |c|
      c.url = 'ftp://test.com'
    end

    html = ::Asciidoctor.convert(StringIO.new(DOC_BASIC), backend: 'html5')
    page = Nokogiri::HTML(html)
    elements = page.css('pre.plantuml-error')
    assert_equal elements.size, 1
  end

  def test_plantuml_nil_uri
    Asciidoctor::PlantUml.configure do |c|
      c.url = nil
    end

    html = ::Asciidoctor.convert(StringIO.new(DOC_BASIC), backend: 'html5')
    page = Nokogiri::HTML(html)
    elements = page.css('pre.plantuml-error')
    assert_equal elements.size, 1
  end

  def test_plantuml_empty_uri
    Asciidoctor::PlantUml.configure do |c|
      c.url = ''
    end

    html = ::Asciidoctor.convert(StringIO.new(DOC_BASIC), backend: 'html5')
    page = Nokogiri::HTML(html)
    elements = page.css('pre.plantuml-error')
    assert_equal elements.size, 1
  end

  def test_disable_txt
    Asciidoctor::PlantUml.configure do |c|
      c.url = 'http://localhost:8080/plantuml'
      c.txt_enable = false
    end

    html = ::Asciidoctor.convert(StringIO.new(DOC_TXT), backend: 'html5')
    page = Nokogiri::HTML(html)
    elements = page.css('pre.plantuml-error')
    assert_equal elements.size, 1
  end
end