Add test

test/test_binder.rb

@@ -55,7 +55,7 @@ def test_correct_zero_port_ssl
     @binder.parse(["ssl://localhost:0?key=#{key}&cert=#{cert}"], @events)
 
     stdout = @events.stdout.string
-    m = %r!tcp://127.0.0.1:(\d+)!.match(stdout)
+    m = %r!ssl://127.0.0.1:(\d+)!.match(stdout)
     port = m[1].to_i
 
     refute_equal 0, port
@@ -70,7 +70,12 @@ def test_correct_doublebind
 
     stdout = @events.stdout.string
 
-    # Unsure of what to actually assert on here yet
+    %w[tcp ssl].each do |prot|
+      assert_match %r!#{prot}://127.0.0.1:(\d+)!, stdout
+      if @binder.loopback_addresses.include?("::1")
+        assert_match %r!#{prot}://\[::1\]:(\d+)!, stdout
+      end
+    end
   end
 
   def test_allows_both_unix_and_tcp