downloads: add tests for untested sites.

test/unit/downloads/nijie_test.rb

@@ -0,0 +1,22 @@
+require "test_helper"
+
+module Downloads
+  class NijieTest < ActiveSupport::TestCase
+    context "downloading a 'http://nijie.info/view.php?id=:id' url" do
+      should "download the original file" do
+        @source = "http://nijie.info/view.php?id=213043"
+        @rewrite = "https://pic03.nijie.info/nijie_picture/728995_20170505014820_0.jpg"
+        assert_rewritten(@rewrite, @source)
+        assert_downloaded(132_555, @source)
+      end
+    end
+
+    context "downloading a 'https://pic*.nijie.info/nijie_picture/:id.jpg' url" do
+      should "download the original file" do
+        @source = "https://pic03.nijie.info/nijie_picture/728995_20170505014820_0.jpg"
+        assert_not_rewritten(@source)
+        assert_downloaded(132_555, @source)
+      end
+    end
+  end
+end