Show subject separately in RDF.Description inspect string

CHANGELOG.md

@@ -11,6 +11,11 @@ This project adheres to [Semantic Versioning](http://semver.org/) and
 
 - `RDF.Graph.new/2` and `RDF.Graph.add/2` support the addition of `RDF.Dataset`s
 
+### Changed
+
+- The inspect string of `RDF.Description` now includes the subject separately, so 
+  it can be seen also when the description is empty.
+
 
 [Compare v0.11.0...HEAD](https://github.com/rdf-elixir/rdf-ex/compare/v0.11.0...HEAD)
 

lib/rdf/inspect.ex

@@ -30,12 +30,14 @@ defimpl Inspect, for: RDF.Description do
             description
           end
 
+        header = "#RDF.Description<subject: #{inspect(description.subject)}"
+
         body =
           description
           |> RDF.Turtle.write_string!(only: :triples, indent: 2)
           |> String.trim_trailing()
 
-        "#RDF.Description<\n#{body}#{if limit, do: "..\n..."}\n>"
+        "#{header}\n#{body}#{if limit, do: "..\n..."}\n>"
       rescue
         caught_exception ->
           message =

test/unit/inspect_test.exs

@@ -22,7 +22,7 @@ defmodule RDF.InspectTest do
   describe "RDF.Description" do
     test "it includes a header" do
       {header, _} = inspect_parts(@test_description)
-      assert header == "#RDF.Description<"
+      assert header == "#RDF.Description<subject: #{inspect(@test_description.subject)}"
     end
 
     test "it encodes the description in Turtle" do
@@ -34,6 +34,10 @@ defmodule RDF.InspectTest do
                   |> String.trim()) <> "\n>"
     end
 
+    test "it includes the subject when empty" do
+      assert inspect(Description.new(EX.Foo)) =~ IRI.to_string(EX.Foo)
+    end
+
     test "it encodes the RDF-star graphs and descriptions in Turtle-star" do
       {_, triples} = inspect_parts(annotation_description(), limit: 2)
       assert triples =~ "<< <http://example.com/S> <http://example.com/P> \"Foo\" >>"