Make tests pass once more.

src/components/net/file_loader.rs

@@ -8,7 +8,8 @@ use std::io;
 use std::io::File;
 use servo_util::task::spawn_named;
 
-static READ_SIZE: uint = 1024;
+//FIXME: https://github.com/mozilla/rust/issues/12892
+static READ_SIZE: uint = 1;
 
 fn read_all(reader: &mut io::Stream, progress_chan: &Chan<ProgressMsg>)
         -> Result<(), ()> {

src/test/content/test_document_body.html

@@ -35,7 +35,9 @@
 
                 is_not(new_div, null, "test4-0, append an invalid element to a new document");
 
-                new_document.body = new_div;
+                should_throw(function() {
+                  new_document.body = new_div;
+                });
                 is(new_document.body, null, "test4-1, append an invalid element to a new document");
             }