1 files changed, 23 insertions, 0 deletions
diff --git a/spec/ruby/library/uri/route_from_spec.rb b/spec/ruby/library/uri/route_from_spec.rb
new file mode 100644
index 0000000000..501f455775
--- /dev/null
+++ b/spec/ruby/library/uri/route_from_spec.rb
@@ -0,0 +1,23 @@
+require_relative '../../spec_helper'
+require 'uri'
+
+describe "URI#route_from" do
+
+  #this could be split out a good bit better
+  it "gives the minimal difference between the current URI and the target" do
+    URI("http://example.com/a.html").route_from('http://example.com/a.html').to_s.should == ""
+    URI("http://example.com/a.html").route_from('http://example.com/b.html').to_s.should == "a.html"
+    URI("http://example.com/a/").route_from('http://example.com/b/').to_s.should == "../a/"
+    URI("http://example.com/b/").route_from('http://example.com/a/c').to_s.should == "../b/"
+    URI("http://example.com/b/").route_from('http://example.com/a/b/').to_s.should == "../../b/"
+    URI("http://example.com/b/").route_from('http://EXAMPLE.cOm/a/b/').to_s.should == "../../b/"
+    URI("http://example.net/b/").route_from('http://example.com/a/b/').to_s.should == "//example.net/b/"
+    URI("mailto:foo@example.com#bar").route_from('mailto:foo@example.com').to_s.should == "#bar"
+  end
+
+  it "accepts a string-like argument" do
+    str = mock('string-like')
+    str.should_receive(:to_str).and_return("http://example.com/b.html")
+    URI("http://example.com/a.html").route_from(str).to_s.should == "a.html"
+  end
+end