Move Tempfile tests to tempfile_spec.rb

spec/paperclip/tempfile_spec.rb

+require 'spec_helper'
+
+describe Paperclip::Tempfile do
+  context "A Paperclip Tempfile" do
+    before do
+      @tempfile = described_class.new(["file", ".jpg"])
+    end
+
+    after { @tempfile.close }
+
+    it "has its path contain a real extension" do
+      assert_equal ".jpg", File.extname(@tempfile.path)
+    end
+
+    it "is a real Tempfile" do
+      assert @tempfile.is_a?(::Tempfile)
+    end
+  end
+
+  context "Another Paperclip Tempfile" do
+    before do
+      @tempfile = described_class.new("file")
+    end
+
+    after { @tempfile.close }
+
+    it "does not have an extension if not given one" do
+      assert_equal "", File.extname(@tempfile.path)
+    end
+
+    it "is a real Tempfile" do
+      assert @tempfile.is_a?(::Tempfile)
+    end
+  end
+end