| <!DOCTYPE html> |
| <script src='../../resources/testharness.js'></script> |
| <script src='../../resources/testharnessreport.js'></script> |
| <script> |
| // This is updated till https://github.com/whatwg/streams/commit/4ba861e6f60c248060811830e11271c84b439cc3 |
| |
| test(function() { |
| var theError = new Error('a unique string'); |
| |
| assert_throws_exactly(theError, function() { |
| new WritableStream({}, { |
| get size() { |
| throw theError; |
| }, |
| highWaterMark: 5 |
| }); |
| }, 'construction should re-throw the error'); |
| }, 'Writable stream: throwing strategy.size getter'); |
| |
| var test1 = async_test('Writable stream: throwing strategy.size method'); |
| test1.step(function() { |
| var theError = new Error('a unique string'); |
| var writeCalled = false; |
| var ws = new WritableStream({ }, |
| { |
| size: function() { |
| throw theError; |
| }, |
| highWaterMark: 5 |
| } |
| ); // Initial construction should not throw. |
| |
| ws.write('a').then( |
| test1.step_func(function() { assert_unreached('write should not fulfill'); }), |
| test1.step_func(function(r) { |
| assert_equals(r, theError, 'write should reject with the thrown error'); |
| writeCalled = true; |
| }) |
| ); |
| |
| ws.closed.then( |
| test1.step_func(function() { assert_unreached('closed should not fulfill'); }), |
| test1.step_func(function(r) { |
| assert_equals(r, theError, 'closed should reject with the thrown error'); |
| assert_true(writeCalled); |
| test1.done(); |
| }) |
| ); |
| }); |
| |
| var test2 = async_test('Writable stream: invalid strategy.size return value'); |
| test2.step(function() { |
| var numberOfCalls = 0; |
| var elements = [NaN, -Infinity, +Infinity, -1]; |
| var theError = []; |
| var numberOfCalls = 0; |
| for (var i = 0; i < elements.length; i++) { |
| var ws = new WritableStream({}, |
| { |
| size: function() { |
| return elements[i]; |
| }, |
| highWaterMark: 5 |
| }); |
| |
| var writeFunction = function(i, r) { |
| assert_throws_js(RangeError, function() { throw r; }, 'write should reject with a RangeError for ' + elements[i]); |
| theError[i] = r; |
| }; |
| ws.write('a').then( |
| test2.step_func(function() { assert_unreached('write should not fulfill'); }), |
| test2.step_func(writeFunction.bind(this, i)) |
| ); |
| |
| var catchFunction = function(i, e) { |
| assert_equals(e, theError[i], 'closed should reject with the error for ' + elements[i]); |
| if (++numberOfCalls, elements.length) { |
| test2.done(); |
| } |
| }; |
| |
| ws.closed.catch(test2.step_func(catchFunction.bind(this, i))); |
| } |
| }); |
| |
| test(function() { |
| var theError = new Error('a unique string'); |
| |
| assert_throws_exactly(theError, function() { |
| new WritableStream({}, { |
| size: function() { |
| return 1; |
| }, |
| get highWaterMark() { |
| throw theError; |
| } |
| }); |
| }, 'construction should re-throw the error'); |
| }, 'Writable stream: throwing strategy.highWaterMark getter'); |
| |
| test(function() { |
| for (var highWaterMark of [-1, -Infinity]) { |
| assert_throws_js(RangeError, function() { |
| new WritableStream({}, { |
| size: function() { |
| return 1; |
| }, |
| highWaterMark |
| }); |
| }, 'construction should throw a RangeError for ' + highWaterMark); |
| } |
| |
| for (var highWaterMark of [NaN, 'foo', {}]) { |
| assert_throws_js(RangeError, function() { |
| new WritableStream({}, { |
| size: function() { |
| return 1; |
| }, |
| highWaterMark |
| }); |
| }, 'construction should throw a TypeError for ' + highWaterMark); |
| } |
| }, 'Writable stream: invalid strategy.highWaterMark'); |
| </script> |
