gecko-dev/toolkit/components/workerloader/tests/worker_test_loading.js

122 строки
4.2 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
importScripts("utils_worker.js"); // Test suite code
info("Test suite configured");
importScripts("resource://gre/modules/workers/require.js");
info("Loader imported");
var PATH = "chrome://mochitests/content/chrome/toolkit/components/workerloader/tests/";
var tests = [];
var add_test = function(test) {
tests.push(test);
};
add_test(function test_setup() {
ok(typeof require != "undefined", "Function |require| is defined");
});
// Test simple loading (moduleA-depends.js requires moduleB-dependency.js)
add_test(function test_load() {
let A = require(PATH + "moduleA-depends.js");
ok(true, "Opened module A");
is(A.A, true, "Module A exported value A");
ok(!("B" in A), "Module A did not export value B");
is(A.importedFoo, "foo", "Module A re-exported B.foo");
// re-evaluating moduleB-dependency.js would cause an error, but re-requiring it shouldn't
let B = require(PATH + "moduleB-dependency.js");
ok(true, "Managed to re-require module B");
is(B.B, true, "Module B exported value B");
is(B.foo, "foo", "Module B exported value foo");
});
// Test simple circular loading (moduleC-circular.js and moduleD-circular.js require each other)
add_test(function test_circular() {
let C = require(PATH + "moduleC-circular.js");
ok(true, "Loaded circular modules C and D");
is(C.copiedFromD.copiedFromC.enteredC, true, "Properties exported by C before requiring D can be seen by D immediately");
let D = require(PATH + "moduleD-circular.js");
is(D.exportedFromC.finishedC, true, "Properties exported by C after requiring D can be seen by D eventually");
});
// Testing error cases
add_test(function test_exceptions() {
let should_throw = function(f) {
try {
f();
return null;
} catch (ex) {
return ex;
}
};
let exn = should_throw(() => require(PATH + "this module doesn't exist"));
ok(!!exn, "Attempting to load a module that doesn't exist raises an error");
exn = should_throw(() => require(PATH + "moduleE-throws-during-require.js"));
ok(!!exn, "Attempting to load a module that throws at toplevel raises an error");
is(exn.moduleName, PATH + "moduleE-throws-during-require.js",
"moduleName is correct");
isnot(exn.moduleStack.indexOf("moduleE-throws-during-require.js"), -1,
"moduleStack contains the name of the module");
is(exn.lineNumber, 10, "The error comes with the right line number");
exn = should_throw(() => require(PATH + "moduleF-syntaxerror.xml"));
ok(!!exn, "Attempting to load a non-well formatted module raises an error");
exn = should_throw(() => require(PATH + "moduleG-throws-later.js").doThrow());
ok(!!exn, "G.doThrow() has raised an error");
info(exn);
ok(exn.toString().startsWith("TypeError"), "The exception is a TypeError.");
is(exn.moduleName, PATH + "moduleG-throws-later.js", "The name of the module is correct");
isnot(exn.moduleStack.indexOf("moduleG-throws-later.js"), -1,
"The name of the right file appears somewhere in the stack");
is(exn.lineNumber, 11, "The error comes with the right line number");
});
function get_exn(f) {
try {
f();
return undefined;
} catch (ex) {
return ex;
}
}
// Test module.exports
add_test(function test_module_dot_exports() {
let H = require(PATH + "moduleH-module-dot-exports.js");
is(H.key, "value", "module.exports worked");
let H2 = require(PATH + "moduleH-module-dot-exports.js");
is(H2.key, "value", "module.exports returned the same key");
ok(H2 === H, "module.exports returned the same module the second time");
let exn = get_exn(() => H.key = "this should not be accepted");
ok(exn instanceof TypeError, "Cannot alter value in module.exports after export");
exn = get_exn(() => H.key2 = "this should not be accepted, either");
ok(exn instanceof TypeError, "Cannot add value to module.exports after export");
});
self.onmessage = function(message) {
for (let test of tests) {
info("Entering " + test.name);
try {
test();
} catch (ex) {
ok(false, "Test " + test.name + " failed");
info(ex);
info(ex.stack);
}
info("Leaving " + test.name);
}
finish();
};