Add relation version pages

test/controllers/old_relations_controller_test.rb

@@ -0,0 +1,35 @@
+require "test_helper"
+
+class OldRelationsControllerTest < ActionDispatch::IntegrationTest
+  def test_routes
+    assert_routing(
+      { :path => "/relation/1/history/2", :method => :get },
+      { :controller => "old_relations", :action => "show", :id => "1", :version => "2" }
+    )
+  end
+
+  def test_visible
+    relation = create(:relation, :with_history)
+    get old_relation_path(relation, 1)
+    assert_response :success
+    assert_template "old_relations/show"
+    assert_template :layout => "map"
+  end
+
+  def test_visible_with_members
+    relation = create(:relation, :with_history)
+    create(:old_relation_member, :old_relation => relation.old_relations.first)
+    get old_relation_path(relation, 1)
+    assert_response :success
+    assert_template "old_relations/show"
+    assert_template :layout => "map"
+  end
+
+  def test_not_found
+    get old_relation_path(0, 0)
+    assert_response :not_found
+    assert_template "old_relations/not_found"
+    assert_template :layout => "map"
+    assert_select "#sidebar_content", /relation #0 version 0 could not be found/
+  end
+end