According to http://dev.w3.org/2009/dap/file-system/file-writer.html#the-filewriter-interface , FileWriter objects have three methods that have required arguments: write(data) seek(offset) truncate(size) This test creates a FileWriter object and calls these methods without their respective required arguments, and logs the results. Expected results in each case: TypeError (not enough arguments). WebKit passes this test.
Created attachment 110246 [details] Patch
Comment on attachment 110246 [details] Patch This is redundant with http://trac.webkit.org/browser/trunk/LayoutTests/fast/filesystem/not-enough-arguments.html