test/file_writer_test.rb in iostreams-0.14.0 vs test/file_writer_test.rb in iostreams-0.15.0

@@ -1,34 +1,35 @@
 require_relative 'test_helper'
 
-# Unit Test for IOStreams::File
-module Streams
-  class FileWriterTest < Minitest::Test
-    describe IOStreams::File::Writer do
-      before do
-        @file_name = File.join(File.dirname(__FILE__), 'files', 'text.txt')
-        @data      = File.read(@file_name)
-      end
+class FileWriterTest < Minitest::Test
+  describe IOStreams::File::Writer do
+    let :file_name do
+      File.join(File.dirname(__FILE__), 'files', 'text.txt')
+    end
 
-      describe '.open' do
-        it 'file' do
-          temp_file = Tempfile.new('rocket_job')
-          file_name = temp_file.to_path
-          IOStreams::File::Writer.open(file_name) do |io|
-            io.write(@data)
-          end
-          result = File.read(file_name)
-          assert_equal @data, result
+    let :raw do
+      File.read(file_name)
+    end
+
+    describe '.open' do
+      it 'file' do
+        temp_file = Tempfile.new('rocket_job')
+        file_name = temp_file.to_path
+        IOStreams::File::Writer.open(file_name) do |io|
+          io.write(raw)
         end
+        result = File.read(file_name)
+        assert_equal raw, result
+      end
 
-        it 'stream' do
-          io_string = StringIO.new
+      it 'does not support streams' do
+        io_string = StringIO.new
+        assert_raises ArgumentError do
           IOStreams::File::Writer.open(io_string) do |io|
-            io.write(@data)
+            io.write(raw)
           end
-          assert_equal @data, io_string.string
         end
       end
-
     end
+
   end
 end