Added support for int_ref and _bg, _tx colours for all ref keys

[rails.git] / test / helpers / browse_helper_test.rb

diff --git a/test/helpers/browse_helper_test.rb b/test/helpers/browse_helper_test.rb
index a48ac4df886504137f563e125df355c9a7118cec..0c4f2b20302e7ea1d042eb6487168233d777ad5f 100644 (file)
--- a/test/helpers/browse_helper_test.rb
+++ b/test/helpers/browse_helper_test.rb
@@ -1,123 +1,269 @@
-# -*- coding: utf-8 -*-
-
-require 'test_helper'
+require "test_helper"

 
 class BrowseHelperTest < ActionView::TestCase
   include ERB::Util
   include ApplicationHelper
 
 
 class BrowseHelperTest < ActionView::TestCase
   include ERB::Util
   include ApplicationHelper
 

-  api_fixtures
-

   def setup
     I18n.locale = "en"
   end
 
   def setup
     I18n.locale = "en"
   end
 

+  def teardown
+    I18n.locale = "en"
+  end
+

   def test_printable_name
   def test_printable_name

-    assert_equal "17", printable_name(current_nodes(:redacted_node))
-    assert_equal "Test Node (18)", printable_name(current_nodes(:node_with_name))
-    assert_equal "Test Node (18)", printable_name(nodes(:node_with_name_current_version))
-    assert_equal "18", printable_name(nodes(:node_with_name_redacted_version))
-    assert_equal "Test Node (18, v2)", printable_name(nodes(:node_with_name_current_version), true)
-    assert_equal "18, v1", printable_name(nodes(:node_with_name_redacted_version), true)
-
-    I18n.locale = "ru"
-
-    assert_equal "17", printable_name(current_nodes(:redacted_node))
-    assert_equal "проверки узла (18)", printable_name(current_nodes(:node_with_name))
-    assert_equal "проверки узла (18)", printable_name(nodes(:node_with_name_current_version))
-    assert_equal "18", printable_name(nodes(:node_with_name_redacted_version))
-    assert_equal "проверки узла (18, v2)", printable_name(nodes(:node_with_name_current_version), true)
-    assert_equal "18, v1", printable_name(nodes(:node_with_name_redacted_version), true)
+    node = create(:node, :with_history, :version => 2)
+    node_v1 = node.old_nodes.find_by(:version => 1)
+    node_v2 = node.old_nodes.find_by(:version => 2)
+    node_v1.redact!(create(:redaction))
+
+    add_tags_selection(node)
+    add_old_tags_selection(node_v2)
+    add_old_tags_selection(node_v1)
+
+    node_with_ref_without_name = create(:node)
+    create(:node_tag, :node => node_with_ref_without_name, :k => "ref", :v => "3.1415926")
+
+    deleted_node = create(:node, :deleted)
+
+    assert_dom_equal deleted_node.id.to_s, printable_name(deleted_node)
+    assert_dom_equal "<bdi>Test Node</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node)
+    assert_dom_equal "<bdi>Test Node</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node_v2)
+    assert_dom_equal node.id.to_s, printable_name(node_v1)
+    assert_dom_equal "<bdi>Test Node</bdi> (<bdi>#{node.id}, v2</bdi>)", printable_name(node_v2, true)
+    assert_dom_equal "#{node.id}, v1", printable_name(node_v1, true)
+    assert_dom_equal "<bdi>3.1415926</bdi> (<bdi>#{node_with_ref_without_name.id}</bdi>)", printable_name(node_with_ref_without_name)
+
+    I18n.locale = "pt"
+
+    assert_dom_equal deleted_node.id.to_s, printable_name(deleted_node)
+    assert_dom_equal "<bdi>Nó teste</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node)
+    assert_dom_equal "<bdi>Nó teste</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node_v2)
+    assert_dom_equal node.id.to_s, printable_name(node_v1)
+    assert_dom_equal "<bdi>Nó teste</bdi> (<bdi>#{node.id}, v2</bdi>)", printable_name(node_v2, true)
+    assert_dom_equal "#{node.id}, v1", printable_name(node_v1, true)
+    assert_dom_equal "<bdi>3.1415926</bdi> (<bdi>#{node_with_ref_without_name.id}</bdi>)", printable_name(node_with_ref_without_name)
+
+    I18n.locale = "pt-BR"
+
+    assert_dom_equal deleted_node.id.to_s, printable_name(deleted_node)
+    assert_dom_equal "<bdi>Nó teste</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node)
+    assert_dom_equal "<bdi>Nó teste</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node_v2)
+    assert_dom_equal node.id.to_s, printable_name(node_v1)
+    assert_dom_equal "<bdi>Nó teste</bdi> (<bdi>#{node.id}, v2</bdi>)", printable_name(node_v2, true)
+    assert_dom_equal "#{node.id}, v1", printable_name(node_v1, true)
+    assert_dom_equal "<bdi>3.1415926</bdi> (<bdi>#{node_with_ref_without_name.id}</bdi>)", printable_name(node_with_ref_without_name)

 
     I18n.locale = "de"
 
 
     I18n.locale = "de"
 

-    assert_equal "17", printable_name(current_nodes(:redacted_node))
-    assert_equal "Test Node (18)", printable_name(current_nodes(:node_with_name))
-    assert_equal "Test Node (18)", printable_name(nodes(:node_with_name_current_version))
-    assert_equal "18", printable_name(nodes(:node_with_name_redacted_version))
-    assert_equal "Test Node (18, v2)", printable_name(nodes(:node_with_name_current_version), true)
-    assert_equal "18, v1", printable_name(nodes(:node_with_name_redacted_version), true)
+    assert_dom_equal deleted_node.id.to_s, printable_name(deleted_node)
+    assert_dom_equal "<bdi>Test Node</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node)
+    assert_dom_equal "<bdi>Test Node</bdi> (<bdi>#{node.id}</bdi>)", printable_name(node_v2)
+    assert_dom_equal node.id.to_s, printable_name(node_v1)
+    assert_dom_equal "<bdi>Test Node</bdi> (<bdi>#{node.id}, v2</bdi>)", printable_name(node_v2, true)
+    assert_dom_equal "#{node.id}, v1", printable_name(node_v1, true)
+    assert_dom_equal "<bdi>3.1415926</bdi> (<bdi>#{node_with_ref_without_name.id}</bdi>)", printable_name(node_with_ref_without_name)

   end
 
   def test_link_class
   end
 
   def test_link_class

-    assert_equal "node", link_class("node", current_nodes(:visible_node))
-    assert_equal "node deleted", link_class("node", current_nodes(:invisible_node))
-    assert_equal "node deleted", link_class("node", current_nodes(:redacted_node))
-    assert_equal "node building yes shop gift tourism museum", link_class("node", current_nodes(:node_with_name))
-    assert_equal "node building yes shop gift tourism museum", link_class("node", nodes(:node_with_name_current_version))
-    assert_equal "node deleted", link_class("node", nodes(:node_with_name_redacted_version))
+    node = create(:node, :with_history, :version => 2)
+    node_v1 = node.old_nodes.find_by(:version => 1)
+    node_v2 = node.old_nodes.find_by(:version => 2)
+    node_v1.redact!(create(:redaction))
+
+    add_tags_selection(node)
+    add_old_tags_selection(node_v2)
+    add_old_tags_selection(node_v1)
+
+    assert_equal "node", link_class("node", create(:node))
+    assert_equal "node deleted", link_class("node", create(:node, :deleted))
+
+    assert_equal "node building yes shop gift tourism museum", link_class("node", node)
+    assert_equal "node building yes shop gift tourism museum", link_class("node", node_v2)
+    assert_equal "node deleted", link_class("node", node_v1)

   end
 
   def test_link_title
   end
 
   def test_link_title

-    assert_equal "", link_title(current_nodes(:visible_node))
-    assert_equal "", link_title(current_nodes(:invisible_node))
-    assert_equal "", link_title(current_nodes(:redacted_node))
-    assert_equal "building=yes, shop=gift, and tourism=museum", link_title(current_nodes(:node_with_name))
-    assert_equal "building=yes, shop=gift, and tourism=museum", link_title(nodes(:node_with_name_current_version))
-    assert_equal "", link_title(nodes(:node_with_name_redacted_version))
+    node = create(:node, :with_history, :version => 2)
+    node_v1 = node.old_nodes.find_by(:version => 1)
+    node_v2 = node.old_nodes.find_by(:version => 2)
+    node_v1.redact!(create(:redaction))
+
+    add_tags_selection(node)
+    add_old_tags_selection(node_v2)
+    add_old_tags_selection(node_v1)
+
+    assert_equal "", link_title(create(:node))
+    assert_equal "", link_title(create(:node, :deleted))
+
+    assert_equal "building=yes, shop=gift, and tourism=museum", link_title(node)
+    assert_equal "building=yes, shop=gift, and tourism=museum", link_title(node_v2)
+    assert_equal "", link_title(node_v1)

   end
 
   def test_format_key
     html = format_key("highway")
   end
 
   def test_format_key
     html = format_key("highway")

-    assert_equal "<a href=\"http://wiki.openstreetmap.org/wiki/Key:highway?uselang=en\" title=\"The wiki description page for the highway tag\">highway</a>", html
+    assert_dom_equal "<a href=\"https://wiki.openstreetmap.org/wiki/Key:highway?uselang=en\" title=\"The wiki description page for the highway tag\">highway</a>", html

 
     html = format_key("unknown")
 
     html = format_key("unknown")

-    assert_equal "unknown", html
+    assert_dom_equal "unknown", html

   end
 
   def test_format_value
     html = format_value("highway", "primary")
   end
 
   def test_format_value
     html = format_value("highway", "primary")

-    assert_equal "<a href=\"http://wiki.openstreetmap.org/wiki/Tag:highway=primary?uselang=en\" title=\"The wiki description page for the highway=primary tag\">primary</a>", html
+    assert_dom_equal "<a href=\"https://wiki.openstreetmap.org/wiki/Tag:highway=primary?uselang=en\" title=\"The wiki description page for the highway=primary tag\">primary</a>", html

 
     html = format_value("highway", "unknown")
 
     html = format_value("highway", "unknown")

-    assert_equal "unknown", html
+    assert_dom_equal "unknown", html

 
     html = format_value("unknown", "unknown")
 
     html = format_value("unknown", "unknown")

-    assert_equal "unknown", html
+    assert_dom_equal "unknown", html
+
+    html = format_value("phone", "+1234567890")
+    assert_dom_equal "<a href=\"tel:+1234567890\" title=\"Call +1234567890\">+1234567890</a>", html
+
+    html = format_value("wikipedia", "Test")
+    assert_dom_equal "<a title=\"The Test article on Wikipedia\" href=\"https://en.wikipedia.org/wiki/Test?uselang=en\">Test</a>", html
+
+    html = format_value("wikidata", "Q42")
+    assert_dom_equal "<a title=\"The Q42 item on Wikidata\" href=\"//www.wikidata.org/wiki/Q42?uselang=en\">Q42</a>", html
+
+    html = format_value("operator:wikidata", "Q12;Q98")
+    assert_dom_equal "<a title=\"The Q12 item on Wikidata\" href=\"//www.wikidata.org/wiki/Q12?uselang=en\">Q12</a>;<a title=\"The Q98 item on Wikidata\" href=\"//www.wikidata.org/wiki/Q98?uselang=en\">Q98</a>", html
+
+    html = format_value("name:etymology:wikidata", "Q123")
+    assert_dom_equal "<a title=\"The Q123 item on Wikidata\" href=\"//www.wikidata.org/wiki/Q123?uselang=en\">Q123</a>", html
+
+    html = format_value("colour", "#f00")
+    assert_dom_equal %( <div class="colour-preview-box" style="background-color:#f00" title="Colour #f00 preview"></div>#f00 ), html

   end
 
   def test_icon_tags
   end
 
   def test_icon_tags

-    tags = icon_tags(current_nodes(:node_with_name))
+    node = create(:node, :with_history, :version => 2)
+    node_v1 = node.old_nodes.find_by(:version => 1)
+    node_v2 = node.old_nodes.find_by(:version => 2)
+    node_v1.redact!(create(:redaction))
+
+    add_tags_selection(node)
+
+    tags = icon_tags(node)

     assert_equal 3, tags.count
     assert_equal 3, tags.count

-    assert tags.include?(["building", "yes"])
-    assert tags.include?(["tourism", "museum"])
-    assert tags.include?(["shop", "gift"])
+    assert tags.include?(%w[building yes])
+    assert tags.include?(%w[tourism museum])
+    assert tags.include?(%w[shop gift])
+
+    add_old_tags_selection(node_v2)
+    add_old_tags_selection(node_v1)

 
 

-    tags = icon_tags(nodes(:node_with_name_current_version))
+    tags = icon_tags(node_v2)

     assert_equal 3, tags.count
     assert_equal 3, tags.count

-    assert tags.include?(["building", "yes"])
-    assert tags.include?(["tourism", "museum"])
-    assert tags.include?(["shop", "gift"])
+    assert tags.include?(%w[building yes])
+    assert tags.include?(%w[tourism museum])
+    assert tags.include?(%w[shop gift])

 
 

-    tags = icon_tags(nodes(:node_with_name_redacted_version))
+    tags = icon_tags(node_v1)

     assert_equal 3, tags.count
     assert_equal 3, tags.count

-    assert tags.include?(["building", "yes"])
-    assert tags.include?(["tourism", "museum"])
-    assert tags.include?(["shop", "gift"])
+    assert tags.include?(%w[building yes])
+    assert tags.include?(%w[tourism museum])
+    assert tags.include?(%w[shop gift])

   end
 
   def test_wiki_link
     link = wiki_link("key", "highway")
   end
 
   def test_wiki_link
     link = wiki_link("key", "highway")

-    assert_equal "http://wiki.openstreetmap.org/wiki/Key:highway?uselang=en", link
+    assert_equal "https://wiki.openstreetmap.org/wiki/Key:highway?uselang=en", link

 
     link = wiki_link("tag", "highway=primary")
 
     link = wiki_link("tag", "highway=primary")

-    assert_equal "http://wiki.openstreetmap.org/wiki/Tag:highway=primary?uselang=en", link
+    assert_equal "https://wiki.openstreetmap.org/wiki/Tag:highway=primary?uselang=en", link

 
     I18n.locale = "de"
 
     link = wiki_link("key", "highway")
 
     I18n.locale = "de"
 
     link = wiki_link("key", "highway")

-    assert_equal "http://wiki.openstreetmap.org/wiki/DE:Key:highway?uselang=de", link
+    assert_equal "https://wiki.openstreetmap.org/wiki/DE:Key:highway?uselang=de", link

 
     link = wiki_link("tag", "highway=primary")
 
     link = wiki_link("tag", "highway=primary")

-    assert_equal "http://wiki.openstreetmap.org/wiki/DE:Tag:highway=primary?uselang=de", link
+    assert_equal "https://wiki.openstreetmap.org/wiki/DE:Tag:highway=primary?uselang=de", link

 
     I18n.locale = "tr"
 
     link = wiki_link("key", "highway")
 
     I18n.locale = "tr"
 
     link = wiki_link("key", "highway")

-    assert_equal "http://wiki.openstreetmap.org/wiki/Tr:Key:highway?uselang=tr", link
+    assert_equal "https://wiki.openstreetmap.org/wiki/Tr:Key:highway?uselang=tr", link

 
     link = wiki_link("tag", "highway=primary")
 
     link = wiki_link("tag", "highway=primary")

-    assert_equal "http://wiki.openstreetmap.org/wiki/Tag:highway=primary?uselang=tr", link
+    assert_equal "https://wiki.openstreetmap.org/wiki/Tag:highway=primary?uselang=tr", link
+  end
+
+  def test_wikidata_links
+    ### Non-prefixed wikidata-tag (only one value allowed)
+
+    # Non-wikidata tag
+    links = wikidata_links("foo", "Test")
+    assert_nil links
+
+    # No URLs allowed
+    links = wikidata_links("wikidata", "http://www.wikidata.org/wiki/Q1")
+    assert_nil links
+
+    # No language-prefixes (as wikidata is multilanguage)
+    links = wikidata_links("wikidata", "en:Q1")
+    assert_nil links
+
+    # Needs a leading Q
+    links = wikidata_links("wikidata", "1")
+    assert_nil links
+
+    # No leading zeros allowed
+    links = wikidata_links("wikidata", "Q0123")
+    assert_nil links
+
+    # A valid value
+    links = wikidata_links("wikidata", "Q42")
+    assert_equal 1, links.length
+    assert_equal "//www.wikidata.org/wiki/Q42?uselang=en", links[0][:url]
+    assert_equal "Q42", links[0][:title]
+
+    # the language of the wikidata-page should match the current locale
+    I18n.locale = "zh-CN"
+    links = wikidata_links("wikidata", "Q1234")
+    assert_equal 1, links.length
+    assert_equal "//www.wikidata.org/wiki/Q1234?uselang=zh-CN", links[0][:url]
+    assert_equal "Q1234", links[0][:title]
+    I18n.locale = "en"
+
+    ### Prefixed wikidata-tags
+
+    # Not anything is accepted as prefix (only limited set)
+    links = wikidata_links("anything:wikidata", "Q13")
+    assert_nil links
+
+    # This for example is an allowed key
+    links = wikidata_links("operator:wikidata", "Q24")
+    assert_equal "//www.wikidata.org/wiki/Q24?uselang=en", links[0][:url]
+    assert_equal "Q24", links[0][:title]
+
+    # Another allowed key, this time with multiple values and I18n
+    I18n.locale = "dsb"
+    links = wikidata_links("brand:wikidata", "Q936;Q2013;Q1568346")
+    assert_equal 3, links.length
+    assert_equal "//www.wikidata.org/wiki/Q936?uselang=dsb", links[0][:url]
+    assert_equal "Q936", links[0][:title]
+    assert_equal "//www.wikidata.org/wiki/Q2013?uselang=dsb", links[1][:url]
+    assert_equal "Q2013", links[1][:title]
+    assert_equal "//www.wikidata.org/wiki/Q1568346?uselang=dsb", links[2][:url]
+    assert_equal "Q1568346", links[2][:title]
+    I18n.locale = "en"
+
+    # and now with whitespaces...
+    links = wikidata_links("subject:wikidata", "Q6542248 ;\tQ180\n ;\rQ364\t\n\r ;\nQ4006")
+    assert_equal 4, links.length
+    assert_equal "//www.wikidata.org/wiki/Q6542248?uselang=en", links[0][:url]
+    assert_equal "Q6542248 ", links[0][:title]
+    assert_equal "//www.wikidata.org/wiki/Q180?uselang=en", links[1][:url]
+    assert_equal "\tQ180\n ", links[1][:title]
+    assert_equal "//www.wikidata.org/wiki/Q364?uselang=en", links[2][:url]
+    assert_equal "\rQ364\t\n\r ", links[2][:title]
+    assert_equal "//www.wikidata.org/wiki/Q4006?uselang=en", links[3][:url]
+    assert_equal "\nQ4006", links[3][:title]

   end
 
   def test_wikipedia_link
   end
 
   def test_wikipedia_link


@@ -128,24 +274,211 @@ class BrowseHelperTest < ActionView::TestCase
     assert_nil link
 
     link = wikipedia_link("wikipedia", "Test")
     assert_nil link
 
     link = wikipedia_link("wikipedia", "Test")

-    assert_equal "http://en.wikipedia.org/wiki/Test?uselang=en", link[:url]
+    assert_equal "https://en.wikipedia.org/wiki/Test?uselang=en", link[:url]

     assert_equal "Test", link[:title]
 
     link = wikipedia_link("wikipedia", "de:Test")
     assert_equal "Test", link[:title]
 
     link = wikipedia_link("wikipedia", "de:Test")

-    assert_equal "http://de.wikipedia.org/wiki/de:Test?uselang=en", link[:url]
+    assert_equal "https://de.wikipedia.org/wiki/de:Test?uselang=en", link[:url]

     assert_equal "de:Test", link[:title]
 
     link = wikipedia_link("wikipedia:fr", "de:Test")
     assert_equal "de:Test", link[:title]
 
     link = wikipedia_link("wikipedia:fr", "de:Test")

-    assert_equal "http://fr.wikipedia.org/wiki/de:Test?uselang=en", link[:url]
+    assert_equal "https://fr.wikipedia.org/wiki/de:Test?uselang=en", link[:url]

     assert_equal "de:Test", link[:title]
 
     assert_equal "de:Test", link[:title]
 

+    link = wikipedia_link("wikipedia", "de:Englischer Garten (München)#Japanisches Teehaus")
+    assert_equal "https://de.wikipedia.org/wiki/de:Englischer Garten (München)?uselang=en#Japanisches_Teehaus", link[:url]
+    assert_equal "de:Englischer Garten (München)#Japanisches Teehaus", link[:title]
+
+    link = wikipedia_link("wikipedia", "de:Alte Brücke (Heidelberg)#Brückenaffe")
+    assert_equal "https://de.wikipedia.org/wiki/de:Alte Brücke (Heidelberg)?uselang=en#Br.C3.BCckenaffe", link[:url]
+    assert_equal "de:Alte Brücke (Heidelberg)#Brückenaffe", link[:title]
+
+    link = wikipedia_link("wikipedia", "de:Liste der Baudenkmäler in Eichstätt#Brückenstraße 1, Ehemaliges Bauernhaus")
+    assert_equal "https://de.wikipedia.org/wiki/de:Liste der Baudenkmäler in Eichstätt?uselang=en#Br.C3.BCckenstra.C3.9Fe_1.2C_Ehemaliges_Bauernhaus", link[:url]
+    assert_equal "de:Liste der Baudenkmäler in Eichstätt#Brückenstraße 1, Ehemaliges Bauernhaus", link[:title]
+

     I18n.locale = "pt-BR"
 
     link = wikipedia_link("wikipedia", "zh-classical:Test#Section")
     I18n.locale = "pt-BR"
 
     link = wikipedia_link("wikipedia", "zh-classical:Test#Section")

-    assert_equal "http://zh-classical.wikipedia.org/wiki/zh-classical:Test?uselang=pt-BR#Section", link[:url]
+    assert_equal "https://zh-classical.wikipedia.org/wiki/zh-classical:Test?uselang=pt-BR#Section", link[:url]

     assert_equal "zh-classical:Test#Section", link[:title]
 
     link = wikipedia_link("foo", "Test")
     assert_nil link
   end
     assert_equal "zh-classical:Test#Section", link[:title]
 
     link = wikipedia_link("foo", "Test")
     assert_nil link
   end

+
+  def test_telephone_link
+    link = telephone_link("foo", "Test")
+    assert_nil link
+
+    link = telephone_link("phone", "+123")
+    assert_nil link
+
+    link = telephone_link("phone", "123")
+    assert_nil link
+
+    link = telephone_link("phone", "123 abcdefg")
+    assert_nil link
+
+    link = telephone_link("phone", "+1234567890 abc")
+    assert_nil link
+
+    link = telephone_link("phone", "+1234567890; +22334455667788")
+    assert_nil link
+
+    link = telephone_link("phone", "1234567890")
+    assert_nil link
+
+    link = telephone_link("phone", "+1234567890")
+    assert_equal "tel:+1234567890", link
+
+    link = telephone_link("phone", "+1234-567-890")
+    assert_equal "tel:+1234-567-890", link
+
+    link = telephone_link("phone", "+1234/567/890")
+    assert_equal "tel:+1234/567/890", link
+
+    link = telephone_link("phone", "+1234.567.890")
+    assert_equal "tel:+1234.567.890", link
+
+    link = telephone_link("phone", "   +1234 567-890   ")
+    assert_equal "tel:+1234567-890", link
+
+    link = telephone_link("phone", "+1 234-567-890")
+    assert_equal "tel:+1234-567-890", link
+
+    link = telephone_link("phone", "+1 (234) 567-890")
+    assert_equal "tel:+1(234)567-890", link
+  end
+
+  def test_colour_preview
+    # basic positive tests
+    colour = colour_preview("colour", "red")
+    assert_equal "red", colour
+
+    colour = colour_preview("colour", "Red")
+    assert_equal "Red", colour
+
+    colour = colour_preview("colour", "darkRed")
+    assert_equal "darkRed", colour
+
+    colour = colour_preview("colour", "#f00")
+    assert_equal "#f00", colour
+
+    colour = colour_preview("colour", "#fF0000")
+    assert_equal "#fF0000", colour
+
+    # other tag variants:
+    colour = colour_preview("building:colour", "#f00")
+    assert_equal "#f00", colour
+
+    colour = colour_preview("ref:colour", "#f00")
+    assert_equal "#f00", colour
+
+    colour = colour_preview("ref:colour_bg", "#fF0")
+    assert_equal "#fF0", colour
+
+    colour = colour_preview("ref:colour_tx", "#fa0")
+    assert_equal "#fa0", colour
+
+    colour = colour_preview("int_ref:colour", "green")
+    assert_equal "green", colour
+
+    colour = colour_preview("int_ref:colour_bg", "#00f")
+    assert_equal "#00f", colour
+
+    colour = colour_preview("int_ref:colour_tx", "WHITE")
+    assert_equal "WHITE", colour
+
+    colour = colour_preview("roof:colour", "#f00")
+    assert_equal "#f00", colour
+
+    # negative tests:
+    colour = colour_preview("color", "")
+    assert_nil colour
+
+    colour = colour_preview("color", "   ")
+    assert_nil colour
+
+    colour = colour_preview("color", nil)
+    assert_nil colour
+
+    # ignore US spelling variant
+    colour = colour_preview("color", "red")
+    assert_nil colour
+
+    # irrelevant tag names
+    colour = colour_preview("building", "red")
+    assert_nil colour
+
+    colour = colour_preview("ref:colour_no", "red")
+    assert_nil colour
+
+    colour = colour_preview("ref:colour-bg", "red")
+    assert_nil colour
+
+    colour = colour_preview("int_ref", "red")
+    assert_nil colour
+
+    # invalid hex codes
+    colour = colour_preview("colour", "#")
+    assert_nil colour
+
+    colour = colour_preview("colour", "#ff")
+    assert_nil colour
+
+    colour = colour_preview("colour", "#ffff")
+    assert_nil colour
+
+    colour = colour_preview("colour", "#fffffff")
+    assert_nil colour
+
+    colour = colour_preview("colour", "#ggg")
+    assert_nil colour
+
+    colour = colour_preview("colour", "#ff 00 00")
+    assert_nil colour
+
+    # invalid w3c color names:
+    colour = colour_preview("colour", "r")
+    assert_nil colour
+
+    colour = colour_preview("colour", "ffffff")
+    assert_nil colour
+
+    colour = colour_preview("colour", "f00")
+    assert_nil colour
+
+    colour = colour_preview("colour", "xxxred")
+    assert_nil colour
+
+    colour = colour_preview("colour", "dark red")
+    assert_nil colour
+
+    colour = colour_preview("colour", "dark_red")
+    assert_nil colour
+
+    colour = colour_preview("colour", "ADarkDummyLongColourNameWithAPurpleUndertone")
+    assert_nil colour
+  end
+
+  def add_old_tags_selection(old_node)
+    { "building" => "yes",
+      "shop" => "gift",
+      "tourism" => "museum",
+      "name" => "Test Node",
+      "name:pt" => "Nó teste" }.each do |key, value|
+      create(:old_node_tag, :old_node => old_node, :k => key, :v => value)
+    end
+  end
+
+  def add_tags_selection(node)
+    { "building" => "yes",
+      "shop" => "gift",
+      "tourism" => "museum",
+      "name" => "Test Node",
+      "name:pt" => "Nó teste" }.each do |key, value|
+      create(:node_tag, :node => node, :k => key, :v => value)
+    end
+  end

 end
 end