# Unit tests for the Ruby WADL library.

require 'test/unit'
require 'wadl'

class WADLTest < Test::Unit::TestCase
  def wadl(wadl)
    WADL::Application.from_wadl(%{<?xml version="1.0"?> 
    <application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
             xsi:schemaLocation="http://research.sun.com/wadl wadl.xsd"  
             xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
             xmlns="http://research.sun.com/wadl">
     #{wadl}
    </application>})
  end

  #Null test to shut the compiler up.
  def test_null
  end
end

class FindingWhatYouNeed < WADLTest
  
  def setup
    @wadl = wadl(%{ 
 <resources base="http://www.example.com/">
  <resource id="green_things" path="green">
   <resource href="#frogs" />
   <resource id="pistachios" path="pistachio" />
   <method href="#fetch" />
  </resource>

  <resource id="hopping_things" path="hop">
   <resource href="#frogs" />
  </resource>

  <resource id="frogs" path="frog">
   <method name="POST" id="fetch_frog" />
  </resource>
 </resources>

 <method name="GET" id="fetch" />})
  end

  # Test the ability to find a resource by ID, to find a sub-resource
  # of a resource, and to dereference a resource.
  def test_find_resource_by_id
    green_things = @wadl.find_resource(:green_things)
    frogs = @wadl.find_resource(:frogs)
    assert_equal(green_things.id, 'green_things')
    assert_equal(frogs.path, 'frog')
    assert_equal(green_things.find_resource(:frogs), frogs)
    assert_equal(green_things.find_resource(:pistachios).path, "pistachio")
  end

  # Test the ability to find a resource by path.
  def test_find_resource_by_path
    green_things = @wadl.green
    assert_equal(green_things.id, 'green_things')
    green_things = @wadl.find_resource_by_path('green')
    assert_equal(green_things.id, 'green_things')
    green_things = @wadl.resource('green')
    assert_equal(green_things.id, 'green_things')
    frogs = green_things.find_resource_by_path('frog')
    assert_equal(frogs.id, 'frogs')
  end

  # Dereference a resource two different ways and construct two different
  # URIs from the same resource.
  def test_dereference_resource
    green_frogs = @wadl.green_things.frogs
    assert_equal(green_frogs.uri, 'http://www.example.com/green/frog')

    hopping_frogs = @wadl.hopping_things.frogs
    assert_equal(hopping_frogs.uri, 'http://www.example.com/hop/frog')
  end

  # Find a resource's method by id or HTTP action.
  def test_find_method
    frogs = @wadl.find_resource(:frogs)
    assert_equal(frogs.find_method_by_id(:fetch_frog).name, 'POST')
    assert_equal(frogs.find_method_by_http_action('POST').id, 'fetch_frog')
  end

  # Dereference a resource's method.
  def test_find_dereferenced_method
    green_things = @wadl.find_resource(:green_things)
    assert_equal(green_things.find_method_by_id(:fetch).name, 'GET')
  end
end

class PathParameters < WADLTest

  def setup
    @wadl = wadl(%{
 <resources base="http://www.example.com/">
  <resource id="mad" path="im/mad/because">
   <resource href="#insult" />
  </resource>

  <resource id="insult" path="the/{person}/is/{a}">
   <param name="a" default="dork" style="matrix" />
   <param name="and" style="matrix" />
   <resource id="so-let's" path="so-let's/{do something}" />
  </resource>
 </resources>
})
  end

  def test_path_parameter_substitution
    insult_resource = @wadl.find_resource_by_path('the/{person}/is/{a}')

    # Test simple substitution.
    assert_equal(insult_resource.uri(:path => {'person' => 'king', 'a' => 'fink'}),
                 'http://www.example.com/the/king/is/;a=fink')
    # Test default values.
    assert_equal(insult_resource.uri(:path => {'person' => 'king'}),
                 'http://www.example.com/the/king/is/;a=dork')

    # Test use of optional paramaters.
    assert_equal(insult_resource.uri(:path => {'person' => 'king', 'a' => 'fink',
                                     'and' => 'he can bite me'}),
                 'http://www.example.com/the/king/is/;a=fink/;and=he%20can%20bite%20me')

    # Don't provide required argument.
    assert_raises(ArgumentError) { insult_resource.uri }

    # Provide multiple values for single-valued argument.
    assert_raises(ArgumentError) do
      insult_resource.uri(:path => {:person => 'king', :a => ['fink', 'dolt']})
    end
  end

  # Test enumerated options for parameters
  def test_options

    wadl = wadl(%{
<resources base="http://www.example.com/">
  <resource id="fate" path="fates/{fate}">
   <param name="fate">
    <option value="Clotho" />
    <option value="Lachesis" />
    <option value="Atropos" />
   </param>
  </resource>
</resources>})

    resource = wadl.find_resource('fate')
    assert_equal(resource.uri(:path => {:fate => 'Clotho'}), 
                 'http://www.example.com/fates/Clotho')
    assert_raises(ArgumentError) { resource.uri(:path => {:fate => 'Groucho'}) }
  end  

  # This one's complicated. We bind a resource's path parameters to
  # specific values, then get a sub-resource of the bound resource and
  # bind _its_ path parameters. This tests the BoundResource delegate
  # class.
  def test_bound_resource_traversal
    im_mad_because = @wadl.find_resource('mad')    
    assert_equal(im_mad_because.uri, 'http://www.example.com/im/mad/because')
    insult = im_mad_because.find_resource('insult')
    assert_equal(insult.uri(:path => {'person' => 'king', 'a' => 'fink'}),
                  'http://www.example.com/im/mad/because/the/king/is/;a=fink')
    im_mad_because_hes_a_fink = insult.bind!(:path => {'person' => 'king', 'a' => 'fink'})
    assert_equal(im_mad_because_hes_a_fink.uri, 
                 'http://www.example.com/im/mad/because/the/king/is/;a=fink')
    im_mad_because_hes_a_fink_lets = 
      im_mad_because_hes_a_fink.find_resource("so-let's")    
    assert_equal(im_mad_because_hes_a_fink_lets.uri(:path => {'do something' => "revolt"}),
                 "http://www.example.com/im/mad/because/the/king/is/;a=fink/so-let's/revolt")
    
    im_mad_because_hes_a_fink_lets_revolt =
      im_mad_because_hes_a_fink_lets.bind(:path => {'person' => 'fink', 'do something' => 'revolt'})
    
    assert_equal(im_mad_because_hes_a_fink_lets_revolt.uri,
                 "http://www.example.com/im/mad/because/the/king/is/;a=fink/so-let's/revolt")    
  end

  def test_repeating_arguments
    text = %{
 <resources base="http://www.example.com/">
  <resource id="list" path="i/want/{a}">
   <param name="a" repeating="true" style="%s" />
  </resource>
 </resources>}

    # NOTE: Repeating plain arguments get separated by commas
    # (an arbitrary decision on my part).
    [['plain', 'http://www.example.com/i/want/pony,water%20slide,BB%20gun'],
     ['form', 'http://www.example.com/i/want/a=pony&a=water%20slide&a=BB%20gun'],
     ['matrix', 'http://www.example.com/i/want/;a=pony;a=water%20slide;a=BB%20gun']].each do |style, uri|
      repeating = wadl(text % style)
      list = repeating.find_resource('list')
      assert_equal(list.uri(:path => {:a => ['pony', 'water slide', 'BB gun']}), uri)
    end
  end

  def test_fixed_values
    wadl = wadl(%{
    <resources base="http://www.example.com/">
      <resource id="poll" path="big-brother-is/{opinion}">
      <param name="opinion" fixed="doubleplusgood" />
      </resource>
    </resources>})
    poll = wadl.find_resource('poll')
    assert_equal(poll.uri({:opinion => 'ungood'}), 
                 'http://www.example.com/big-brother-is/doubleplusgood')
  end

  def test_matrix_values
    boolean_matrix = wadl(%{
    <resources base="http://www.example.com/">
      <resource id="blinkenlights" path="light-panel/{light1}{light2}{light3}">
      <param name="light1" type="xsd:boolean" style="matrix" fixed="true" /> 
      <param name="light2" type="xsd:boolean" style="matrix" fixed="false" /> 
      <param name="light3" type="xsd:boolean" style="matrix" />
      </resource>
    </resources>})

    lights = boolean_matrix.find_resource('blinkenlights')
    on_uri = 'http://www.example.com/light-panel/;light1;light3'
    off_uri = 'http://www.example.com/light-panel/;light1'

    assert_equal(lights.uri(:path => {:light3 => 'true'}), on_uri)
    assert_equal(lights.uri(:path => {:light3 => true}), on_uri)

    assert_equal(lights.uri, off_uri)
    assert_equal(lights.uri(:path => {:light3 => 'false'}), off_uri)
    assert_equal(lights.uri(:path => {:light3 => false}), off_uri)
    assert_equal(lights.uri(:path => {:light3 => 'True'}), off_uri)
  end

  class RequestFormatTests < WADLTest

    def setup
      @wadl = wadl(%{
    <resources base="http://www.example.com/">     
      <resource id="top" path="palette">
       <param style="form" name="api_key" />
       <resource id="color" path="colors/{color}">       
        <method href="#get_graphic"/>
        <method href="#set_graphic"/>
       </resource>
      </resource>
    </resources>
 
    <method name="GET" id="get_graphic">
     <request>
      <param name="shade" type="xsd:string" required="true" />
     </request>
    </method>

    <method name="POST" id="set_graphic">
     <request>
      <representation mediaType="application/x-www-form-encoded">
       <param name="new_graphic" type="xsd:string" required="true" />
       <param name="filename" type="xsd:string" required="true" />
      </representation>
     </request>
    </method>})

      @color = @wadl.find_resource('top').bind(:query => {:api_key => 'foobar'})\
      .find_resource('color')
    end

    def test_query_vars
      graphic = @color.find_method('get_graphic')
      path = {:color => 'blue'}
      query = {:shade => 'light'}
      assert_equal(graphic.request.uri(@color, :path=>path, :query=>query),
                   'http://www.example.com/palette/colors/blue?api_key=foobar&shade=light')
      assert_raises(ArgumentError) { graphic.request.uri(@color, path) }
    end

    def test_representation
      graphic = @color.find_method('set_graphic')
      representation = graphic.request.find_form      
      assert_equal(representation % { :new_graphic => 'foobar', 'filename' => 'blue.jpg' },
                   'new_graphic=foobar&filename=blue.jpg')
      assert_raises(ArgumentError) { representation % { :new_graphic => 'foobar' } }
    end

  end

end
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