response-static-error.any.js (974B)
1 // META: global=window,worker 2 // META: title=Response: error static method 3 4 test(function() { 5 var responseError = Response.error(); 6 assert_equals(responseError.type, "error", "Network error response's type is error"); 7 assert_equals(responseError.status, 0, "Network error response's status is 0"); 8 assert_equals(responseError.statusText, "", "Network error response's statusText is empty"); 9 assert_equals(responseError.body, null, "Network error response's body is null"); 10 11 assert_true(responseError.headers.entries().next().done, "Headers should be empty"); 12 }, "Check response returned by static method error()"); 13 14 test(function() { 15 const headers = Response.error().headers; 16 17 // Avoid false positives if expected API is not available 18 assert_true(!!headers); 19 assert_equals(typeof headers.append, 'function'); 20 21 assert_throws_js(TypeError, function () { headers.append('name', 'value'); }); 22 }, "the 'guard' of the Headers instance should be immutable");