| // META: global=window,worker |
| // META: title=Response: error static method |
| |
| test(function() { |
| var responseError = Response.error(); |
| assert_equals(responseError.type, "error", "Network error response's type is error"); |
| assert_equals(responseError.status, 0, "Network error response's status is 0"); |
| assert_equals(responseError.statusText, "", "Network error response's statusText is empty"); |
| assert_equals(responseError.body, null, "Network error response's body is null"); |
| |
| assert_true(responseError.headers.entries().next().done, "Headers should be empty"); |
| }, "Check response returned by static method error()"); |
| |
| test(function() { |
| const headers = Response.error().headers; |
| |
| // Avoid false positives if expected API is not available |
| assert_true(!!headers); |
| assert_equals(typeof headers.append, 'function'); |
| |
| assert_throws_js(TypeError, function () { headers.append('name', 'value'); }); |
| }, "the 'guard' of the Headers instance should be immutable"); |