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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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143
dom/json/test/unit/test_encode.js Normal file
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var Ci = Components.interfaces;
var Cc = Components.classes;
var nativeJSON = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON);
var dirSvc = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties);
var workingDir = dirSvc.get("TmpD", Ci.nsIFile);
var outputName = "json-test-output";
var outputDir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
outputDir.initWithFile(workingDir);
outputDir.append(outputName);
if (!outputDir.exists()) {
outputDir.create(Ci.nsIFile.DIRECTORY_TYPE, 0o777);
} else if (!outputDir.isDirectory()) {
do_throw(outputName + " is not a directory?")
}
function testStringEncode()
{
var obj1 = {a:1};
var obj2 = {foo:"bar"};
do_check_eq(nativeJSON.encode(obj1), '{"a":1}');
do_check_eq(nativeJSON.encode(obj2), '{"foo":"bar"}');
do_check_eq(nativeJSON.encode(), null);
// useless roots are dropped
do_check_eq(nativeJSON.encode(null), null);
do_check_eq(nativeJSON.encode(""), null);
do_check_eq(nativeJSON.encode(undefined), null);
do_check_eq(nativeJSON.encode(5), null);
do_check_eq(nativeJSON.encode(function(){}), null);
do_check_eq(nativeJSON.encode(dump), null);
// All other testing should occur in js/src/tests/ecma_5/JSON/ using
// the otherwise-exactly-identical JSON.stringify.
}
function testToJSON() {
var obj1 = {a:1};
var obj2 = {foo:"bar"};
do_check_eq(nativeJSON.encode({toJSON: () => obj1}), '{"a":1}');
do_check_eq(nativeJSON.encode({toJSON: () => obj2}), '{"foo":"bar"}');
do_check_eq(nativeJSON.encode({toJSON: () => null}), null);
do_check_eq(nativeJSON.encode({toJSON: () => ""}), null);
do_check_eq(nativeJSON.encode({toJSON: () => undefined }), null);
do_check_eq(nativeJSON.encode({toJSON: () => 5}), null);
do_check_eq(nativeJSON.encode({toJSON: () => function(){}}), null);
do_check_eq(nativeJSON.encode({toJSON: () => dump}), null);
}
function testThrowingToJSON() {
var obj1 = {
"b": 1,
"c": 2,
toJSON: function() { throw("uh oh"); }
};
try {
var y = nativeJSON.encode(obj1);
throw "didn't throw";
} catch (ex) {
do_check_eq(ex, "uh oh");
}
var obj2 = {
"b": 1,
"c": 2,
get toJSON() { throw("crash and burn"); }
};
try {
var y = nativeJSON.encode(obj2);
throw "didn't throw";
} catch (ex) {
do_check_eq(ex, "crash and burn");
}
}
function testOutputStreams() {
function writeToFile(obj, charset, writeBOM) {
var jsonFile = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
jsonFile.initWithFile(outputDir);
jsonFile.append("test.json");
jsonFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0o600);
var stream = Cc["@mozilla.org/network/file-output-stream;1"].createInstance(Ci.nsIFileOutputStream);
try {
stream.init(jsonFile, 0x04 | 0x08 | 0x20, 0o600, 0); // write, create, truncate
nativeJSON.encodeToStream(stream, charset, writeBOM, obj);
} finally {
stream.close();
}
return jsonFile;
}
var pairs = [
["{}", {}],
['{"foo":"bar"}', {"foo":"bar"}],
['{"null":null}', {"null":null}],
['{"five":5}', {"five":5}],
['{"true":true}', {"true":true}],
['{"x":{"y":"z"}}', {"x":{"y":"z"}}],
['{"w":{"x":{"y":"z"}}}', {"w":{"x":{"y":"z"}}}],
["[]", []],
['[1,2,3]', [1,2,3]],
['[1,null,3]',[1,,3]],
];
for (var i = 0; i < pairs.length; i++)
{
var pair = pairs[i];
if (pair[1] && (typeof pair[1] == "object")) {
var utf8File = writeToFile(pair[1], "UTF-8", false);
var utf16LEFile = writeToFile(pair[1], "UTF-16LE", false);
var utf16BEFile = writeToFile(pair[1], "UTF-16BE", false);
// all ascii with no BOMs, so this will work
do_check_eq(utf16LEFile.fileSize / 2, utf8File.fileSize);
do_check_eq(utf16LEFile.fileSize, utf16BEFile.fileSize);
}
}
// check BOMs
// the clone() calls are there to work around -- bug 410005
var f = writeToFile({},"UTF-8", true).clone();
do_check_eq(f.fileSize, 5);
var f = writeToFile({},"UTF-16LE", true).clone();
do_check_eq(f.fileSize, 6);
var f = writeToFile({},"UTF-16BE", true).clone();
do_check_eq(f.fileSize, 6);
outputDir.remove(true);
}
function run_test()
{
testStringEncode();
testToJSON();
testThrowingToJSON();
testOutputStreams();
}