Handle base URIs without trailing slash or hash in Turtle encoder properly

CHANGELOG.md

@@ -14,13 +14,15 @@ This project adheres to [Semantic Versioning](http://semver.org/) and
 
 ### Changed
 
-- improvement of the Inspect forms RDF data structures: the content is now
-  enclosed in angle brackets and indented 
+- improvement of the Inspect forms of the RDF data structures: the content is
+  now enclosed in angle brackets and indented 
 
 ### Fixed
 
 - strings of the form `".0"` and `"0."` weren't recognized as valid XSD float  
   and double literals
+- the Turtle encoder handle base URIs without a trailing slash or hash properly  
+  (no longer raising a warning and ignoring them) 
  
 
 [Compare v0.9.2...HEAD](https://github.com/rdf-elixir/rdf-ex/compare/v0.9.2...HEAD)

lib/rdf/serializations/turtle_encoder.ex

@@ -102,17 +102,7 @@ defmodule RDF.Turtle.Encoder do
   defp base_iri(base_iri, _), do: IRI.coerce_base(base_iri)
 
   defp init_base_iri(nil), do: nil
-
-  defp init_base_iri(base_iri) do
-    base_iri = to_string(base_iri)
-
-    if String.ends_with?(base_iri, ~w[/ #]) do
-      {:ok, base_iri}
-    else
-      IO.warn("invalid base_iri: #{base_iri}")
-      {:bad, base_iri}
-    end
-  end
+  defp init_base_iri(base_iri), do: {:ok, to_string(base_iri)}
 
   defp prefixes(nil, %Graph{prefixes: prefixes}) when not is_nil(prefixes), do: prefixes
 

test/unit/turtle_encoder_test.exs

@@ -107,6 +107,28 @@ defmodule RDF.Turtle.EncoderTest do
                <S1>
                    <p1> <O1> .
                """
+
+      base_without_hash = "http://example.com/foo"
+
+      assert Turtle.Encoder.encode!(
+               Graph.new(
+                 [
+                   {
+                     RDF.iri(base_without_hash <> "#S1"),
+                     RDF.iri(base_without_hash <> "#p1"),
+                     RDF.iri(base_without_hash <> "#O1")
+                   }
+                 ],
+                 prefixes: %{},
+                 base_iri: base_without_hash
+               )
+             ) ==
+               """
+               @base <#{base_without_hash}> .
+
+               <#S1>
+                   <#p1> <#O1> .
+               """
     end
 
     test "when a base IRI is given, it has used instead of the base IRI of the given graph" do