core: TestData helper

test/support/test_data.ex

@@ -0,0 +1,14 @@
+defmodule RDF.TestData do
+
+  @dir Path.join(File.cwd!, "test/data/")
+  def dir, do: @dir
+
+  def file(name) do
+    if (path = Path.join(@dir, name)) |> File.exists? do
+      path
+    else
+      raise "Test data file '#{name}' not found"
+    end
+  end
+
+end

test/test_helper.exs

@@ -1 +1,7 @@
 ExUnit.start()
+
+with {:ok, files} = File.ls("./test/support") do
+  Enum.each files, fn(file) ->
+    Code.require_file "support/#{file}", __DIR__
+  end
+end

test/unit/ntriples/reader_test.exs

@@ -3,12 +3,12 @@ defmodule RDF.NTriples.ReaderTest do
 
   doctest RDF.NTriples.Reader
 
-  alias RDF.{Graph}
+  alias RDF.{Graph, TestData}
 
   defmodule EX, do: use RDF.Vocabulary, base_uri: "http://example.org/#"
   defmodule P,  do: use RDF.Vocabulary, base_uri: "http://www.perceive.net/schemas/relationship/"
 
-  @w3c_ntriples_test_suite Path.join(File.cwd!, "test/data/N-TRIPLES-TESTS")
+  @w3c_ntriples_test_suite Path.join(TestData.dir, "N-TRIPLES-TESTS")
 
   test "an empty string is deserialized to an empty graph" do
     assert RDF.NTriples.Reader.read!("") == Graph.new