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/**
* @fileoverview Test262-specific reporter for WPT.
* This script runs inside the test iframe. It captures errors and completion
* signals and communicates them to the parent window.
*
* This implementation strictly follows the TC39 Test262 INTERPRETING.md:
*/
(function() {
/**
* Minimalistic Test262 error constructor.
* Often overwritten by the real one from third_party/test262/harness/assert.js.
*/
function Test262Error(message) {
this.message = message || "";
}
Test262Error.prototype.name = "Test262Error";
self.Test262Error = Test262Error;
const parentWindow = window.parent;
const PHASE_PARSE = "parse";
const PHASE_EARLY = "early";
const PHASE_RESOLUTION = "resolution";
const PHASE_RUNTIME = "runtime";
let expectedType;
let expectedPhase = PHASE_RUNTIME;
let isAsync = false;
let test_finished = false;
let status = 0;
let message = "OK";
window.test262Setup = function() {
};
window.test262ScriptError = function() {
if (test_finished) {
return;
}
// If we expected parse, early, or resolution error, this is a success!
if (expectedPhase === PHASE_PARSE || expectedPhase === PHASE_RESOLUTION || expectedPhase === PHASE_EARLY) {
status = 0;
message = "OK";
} else {
status = 2;
message = "Script failed to load or parse unexpectedly.";
}
done();
};
window.test262IsAsync = function(isAsyncTest) {
isAsync = isAsyncTest;
window.test262Async = isAsyncTest; // For synchronization with server-injected scripts
};
window.test262Negative = function(type, phase) {
expectedType = type;
expectedPhase = phase;
// Default message for negative tests
message = "Expected " + type;
// Negative tests fail if they complete without throwing
status = 1;
};
/**
* TC39 INTERPRETING.md: Async tests use the print function.
* print('Test262:AsyncTestComplete') -> PASS
* print('Test262:AsyncTestFailure: ' + reason) -> FAIL
*
* This override is mandatory for the Test262 specification to capture
* output and prevent the browser's native print dialog.
*/
// Overriding window.print is mandatory for the Test262 specification to capture
// async results and prevent the browser's native print dialog.
window.print = function(output) {
if (output === 'Test262:AsyncTestComplete') {
status = 0;
message = "OK";
done();
} else if (typeof output === 'string' && output.indexOf('Test262:AsyncTestFailure:') === 0) {
status = 1;
message = output;
done();
}
};
function done() {
if (test_finished) {
return;
}
// If we expected an error but didn't get one (and haven't reported success yet)
if (status === 1 && expectedType && message === "Expected " + expectedType) {
message = "Expected " + expectedType + " but test completed without error.";
}
test_finished = true;
parentWindow.test262HarnessDone(status, message);
}
window.test262Done = done;
window.addEventListener("load", function() {
if (!isAsync && !window.__test262IsModule) {
done();
}
});
function on_error(event) {
// Capture errors thrown synchronously inside $262.evalScript so they
// can be rethrown in the correct execution context (see test262-provider.js).
if (window.__test262_evalScript_active_ && event.error) {
window.__test262_evalScript_error_ = event.error;
return;
}
if (test_finished) {
return;
}
/**
* INTERPRETING.md Handling Errors and Negative Test Cases:
* A test is passing if it throws an uncaught exception of the expected type.
*/
let errorMatches = false;
if (expectedType && event.error) {
// Test262 INTERPRETING.md: A test fails if "the name of the thrown
// exception's constructor does not match the specified constructor name".
const constructorName = event.error.constructor && event.error.constructor.name;
if (constructorName === expectedType) {
errorMatches = true;
}
} else if (expectedType && event.message && event.message.indexOf(expectedType) === 0) {
errorMatches = true;
}
if (errorMatches) {
if (expectedPhase === PHASE_PARSE || expectedPhase === PHASE_RESOLUTION || expectedPhase === PHASE_EARLY || expectedPhase === PHASE_RUNTIME) {
status = 0;
message = "OK";
} else {
status = 2;
message = "Expected error in phase " + expectedPhase + " but it occurred in another phase.";
}
} else if (event.error && (event.error instanceof self.Test262Error)) {
status = 1; // FAIL
message = event.error.message || "Test262Error";
} else {
// Other error (or type mismatch for negative test)
status = 2; // ERROR
message = event.message || (event.error ? event.error.toString() : "Unknown Error");
if (expectedType) {
message = "Expected " + expectedType + " but got " + message;
}
}
done();
}
window.addEventListener("error", on_error);
window.addEventListener("unhandledrejection", function(event) {
on_error({
message: "Unhandled promise rejection: " + event.reason,
error: event.reason
});
});
// Special runner alias
window.$DONTEVALUATE = function() {};
})();