1 files changed, 6 insertions, 2 deletions
diff --git a/spec/ruby/library/pathname/relative_path_from_spec.rb b/spec/ruby/library/pathname/relative_path_from_spec.rb
index abe9c80a45..7cbd22c3d6 100644
--- a/spec/ruby/library/pathname/relative_path_from_spec.rb
+++ b/spec/ruby/library/pathname/relative_path_from_spec.rb
@@ -7,11 +7,11 @@ describe "Pathname#relative_path_from" do
   end
 
   it "raises an error when the two paths do not share a common prefix" do
-    -> { relative_path_str('/usr', 'foo') }.should raise_error(ArgumentError)
+    -> { relative_path_str('/usr', 'foo') }.should.raise(ArgumentError)
   end
 
   it "raises an error when the base directory has .." do
-    -> { relative_path_str('a', '..') }.should raise_error(ArgumentError)
+    -> { relative_path_str('a', '..') }.should.raise(ArgumentError)
   end
 
   it "returns a path relative from root" do
@@ -48,4 +48,8 @@ describe "Pathname#relative_path_from" do
     relative_path_str('..', '..').should == '.'
     relative_path_str('..', '.').should == '..'
   end
+
+  it 'converts string argument to Pathname' do
+    Pathname.new('/usr/bin/ls').relative_path_from('/usr').to_s.should == 'bin/ls'
+  end
 end