Make the tests work.

test/test_moviehash.rb

@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+require "test_helper"
+require "webrick"
+require "debug"
+
+class TestMoviehash < Minitest::Test
+  def setup
+    @file_path = File.expand_path("test/files", Dir.pwd) # Set absolute path
+    @port = find_available_port
+
+    @webrick = WEBrick::HTTPServer.new(
+      Port: @port,
+      AccessLog: [],
+      Logger: WEBrick::Log.new(File::NULL)
+    )
+
+    @webrick.mount "/files", WEBrick::HTTPServlet::FileHandler, @file_path
+
+    @thread = Thread.new { @webrick.start }
+
+    # Give the server a moment to start
+    sleep 0.1
+  end
+
+  def teardown
+    @webrick.shutdown
+    @thread.join
+  end
+
+  def test_cases
+    {
+      "breakdance.avi" => "8e245d9679d31e12",
+      "dummy.bin" => "61f7751fc2a72bfb"
+    }
+  end
+
+  def test_that_it_has_a_version_number
+    refute_nil ::Moviehash::VERSION
+  end
+
+  def test_hash_calc
+    # wget https://static.opensubtitles.org/addons/avi/dummy.rar ; unrar x dummy.rar
+    # wget https://static.opensubtitles.org/addons/avi/breakdance.avi
+
+    test_cases.each do |file, hash|
+      assert_equal hash, Moviehash.compute_hash("test/files/#{file}")
+    end
+  end
+
+  def test_hash_calc_url
+    File.expand_path("files", __dir__)
+    # test_cases.each do |file, hash|
+    #  FakeWeb.register_uri(:get, "http://example.com/#{file}", :body => File.join(file_path, file) )
+    #  FakeWeb.register_uri(:head, "http://example.com/#{file}", :content_length => File.size( File.join(file_path, file)) )
+    # end
+
+    test_cases.each do |file, hash|
+      uri = URI.parse("http://localhost:#{@port}/files/#{file}")
+      assert_equal hash, Moviehash.compute_hash(uri.to_s)
+    end
+  end
+
+  private
+
+  def find_available_port
+    server = TCPServer.new("127.0.0.1", 0)
+    port = server.addr[1]
+    server.close
+    port
+  end
+end