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Bug 1245153 - Add error.wrap to wrap Error prototypes; r=automatedtester

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Generally, Error prototypes that are not based on WebDriverError must
be wrapped so that they can be serialised across the AsyncMessageChannel.

MozReview-Commit-ID: EtkpEOBhrST
This commit is contained in:
Andreas Tolfsen 2016-02-03 18:43:37 +00:00
parent 735298b4f8
commit 0be76c7b3b
2 changed files with 28 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
testing/marionette/error.js
View File

@ -73,6 +73,17 @@ error.isWebDriverError = function(obj) {
("name" in obj && ERRORS.indexOf(obj.name) >= 0);
};
/**
* Wraps an Error prototype in a WebDriverError. If the given error is
* already a WebDriverError, this is effectively a no-op.
*/
error.wrap = function(err) {
if (error.isWebDriverError(err)) {
return err;
}
return new WebDriverError(`${err.name}: ${err.message}`, err.stack);
};
/**
* Unhandled error reporter. Dumps the error and its stacktrace to console,
* and reports error to the Browser Console.
@ -151,11 +162,12 @@ error.fromJson = function(json) {
* It should not be used directly, as it does not correspond to a real
* error in the specification.
*/
this.WebDriverError = function(msg) {
this.WebDriverError = function(msg, stack = undefined) {
Error.call(this, msg);
this.name = "WebDriverError";
this.message = msg;
this.status = "webdriver error";
this.stack = stack;
};
WebDriverError.prototype = Object.create(Error.prototype);

15
testing/marionette/test_error.js
View File

@ -64,6 +64,21 @@ add_test(function test_isWebDriverError() {
run_next_test();
});
add_test(function test_wrap() {
equal(error.wrap(new WebDriverError()).name, "WebDriverError");
equal(error.wrap(new InvalidArgumentError()).name, "InvalidArgumentError");
equal(error.wrap(new Error()).name, "WebDriverError");
equal(error.wrap(new EvalError()).name, "WebDriverError");
equal(error.wrap(new InternalError()).name, "WebDriverError");
equal(error.wrap(new RangeError()).name, "WebDriverError");
equal(error.wrap(new ReferenceError()).name, "WebDriverError");
equal(error.wrap(new SyntaxError()).name, "WebDriverError");
equal(error.wrap(new TypeError()).name, "WebDriverError");
equal(error.wrap(new URIError()).name, "WebDriverError");
run_next_test();
});
add_test(function test_stringify() {
equal("<unprintable error>", error.stringify());
equal("<unprintable error>", error.stringify("foo"));