michael@0: // |reftest| skip-if(!xulRuntime.shell)
michael@0: // Any copyright is dedicated to the Public Domain.
michael@0: // http://creativecommons.org/licenses/publicdomain/
michael@0: 
michael@0: function viewToString(view)
michael@0: {
michael@0:   return String.fromCharCode.apply(null, view);
michael@0: }
michael@0: 
michael@0: function assertThrows(f, wantException)
michael@0: {
michael@0:     try {
michael@0:       f();
michael@0:       assertEq(true, false, "expected " + wantException + " exception");
michael@0:     } catch (e) {
michael@0:       assertEq(e.name, wantException.name, e.toString());
michael@0:     }
michael@0: }
michael@0: 
michael@0: function test() {
michael@0:     var filename = "file-mapped-arraybuffers.txt";
michael@0:     var buffer = createMappedArrayBuffer(filename);
michael@0:     var view = new Uint8Array(buffer);
michael@0:     assertEq(viewToString(view), "01234567abcdefghijkl");
michael@0: 
michael@0:     var buffer2 = createMappedArrayBuffer(filename, 8);
michael@0:     view = new Uint8Array(buffer2);
michael@0:     assertEq(viewToString(view), "abcdefghijkl");
michael@0: 
michael@0:     var buffer3 = createMappedArrayBuffer(filename, 0, 8);
michael@0:     view = new Uint8Array(buffer3);
michael@0:     assertEq(viewToString(view), "01234567");
michael@0: 
michael@0:     // Check that invalid sizes and offsets are caught
michael@0:     assertThrows(() => createMappedArrayBuffer("empty.txt", 8), RangeError);
michael@0:     assertThrows(() => createMappedArrayBuffer("empty.txt", 0, 8), Error);
michael@0: }
michael@0: 
michael@0: test();
michael@0: reportCompare(0, 0, 'ok');