<!DOCTYPE html>
-<script src="../../../resources/js-test.js"></script>
+<title>Encoding API: UTF encoding round trips</title>
+<script src="../../../resources/testharness.js"></script>
+<script src="../../../resources/testharnessreport.js"></script>
<script src="resources/shared.js"></script>
<script>
-description("Sanity check the Encoding API's handling of UTF encodings.");
-
-BATCH_SIZE = 0x1000; // Convert in batches spanning this made code points.
-SKIP_SIZE = 0x77; // For efficiency, don't test every code point.
-quiet = true; // Don't log every matching range.
+var BATCH_SIZE = 0x1000; // Convert in batches spanning this many code points.
+var SKIP_SIZE = 0x77; // For efficiency, don't test every code point.
function fromCodePoint(cp) {
- if (0xd800 <= cp && cp <= 0xdfff) throw new Error('Invalid code point');
+ if (0xD800 <= cp && cp <= 0xDFFF) throw new Error('Invalid code point');
- if (cp > 0xffff) {
- // outside BMP - encode as surrogate pair
- return String.fromCharCode(0xd800 + ((cp >> 10) & 0x3ff), 0xdc00 + (cp & 0x3ff));
- }
- return String.fromCharCode(i);
+ if (cp <= 0xFFFF)
+ return String.fromCharCode(cp);
+
+ // outside BMP - encode as surrogate pair
+ return String.fromCharCode(0xD800 + ((cp >> 10) & 0x3FF), 0xDC00 + (cp & 0x3FF));
}
function makeBatch(cp) {
var string = '';
for (var i = cp; i < cp + BATCH_SIZE && cp < 0x10FFFF; i += SKIP_SIZE) {
- if (0xd800 <= i && i <= 0xdfff) {
+ if (0xD800 <= i && i <= 0xDFFF) {
// surrogate half
continue;
}
return string;
}
-function testEncodeDecode(encoding, min, max) {
- debug(encoding + " - Encode/Decode Range " + cpname(min) + " - " + cpname(max));
-
- function cpname(n) {
- return 'U+' + ((n <= 0xFFFF) ?
- ('0000' + n.toString(16).toUpperCase()).slice(-4) :
- n.toString(16).toUpperCase());
- }
-
- for (i = min; i < max; i += BATCH_SIZE) {
- string = makeBatch(i);
- encoded = new TextEncoder(encoding).encode(string);
- decoded = new TextDecoder(encoding).decode(encoded);
- shouldBe("string", "decoded", quiet);
- }
-
- debug("no output means all ranges matched");
- debug("");
-}
-
utf_encodings.forEach(function(encoding) {
- testEncodeDecode(encoding, 0, 0x10FFFF);
+ test(function() {
+ for (var i = 0; i < 0x10FFFF; i += BATCH_SIZE) {
+ var string = makeBatch(i);
+ var encoded = new TextEncoder(encoding).encode(string);
+ var decoded = new TextDecoder(encoding).decode(encoded);
+ assert_equals(decoded, string);
+ }
+ }, encoding + ' - encode/decode round trip');
});
// http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html
function encode_utf8(string) {
var utf8 = unescape(encodeURIComponent(string));
- var octets = [], i;
- for (i = 0; i < utf8.length; i += 1) {
+ var octets = [];
+ for (var i = 0; i < utf8.length; i += 1)
octets.push(utf8.charCodeAt(i));
- }
return octets;
}
return decodeURIComponent(escape(utf8));
}
-debug("UTF-8 encoding (compare against unescape/encodeURIComponent)");
-for (i = 0; i < 0x10FFFF; i += BATCH_SIZE) {
- str = makeBatch(i);
- expected = encode_utf8(str);
- actual = new TextEncoder('UTF-8').encode(str);
- shouldBe("actual", "expected", quiet);
-}
-debug("no output means all ranges matched");
-debug("");
-
-debug("UTF-8 decoding (compare against decodeURIComponent/escape)");
-for (i = 0; i < 0x10FFFF; i += BATCH_SIZE) {
- str = makeBatch(i);
- encoded = encode_utf8(str);
- expected = decode_utf8(encoded);
- actual = new TextDecoder('UTF-8').decode(new Uint8Array(encoded));
- shouldBe("actual", "expected", quiet);
-}
-debug("no output means all ranges matched");
-debug("");
+test(function() {
+ for (var i = 0; i < 0x10FFFF; i += BATCH_SIZE) {
+ var string = makeBatch(i);
+ var expected = encode_utf8(string);
+ var actual = new TextEncoder('UTF-8').encode(string);
+ assert_array_equals(actual, expected);
+ }
+}, 'UTF-8 encoding (compare against unescape/encodeURIComponent)');
+
+test(function() {
+ for (var i = 0; i < 0x10FFFF; i += BATCH_SIZE) {
+ var string = makeBatch(i);
+ var encoded = encode_utf8(string);
+ var expected = decode_utf8(encoded);
+ var actual = new TextDecoder('UTF-8').decode(new Uint8Array(encoded));
+ assert_equals(actual, expected);
+ }
+}, 'UTF-8 decoding (compare against decodeURIComponent/escape)');
</script>
projects / platform / framework / web / crosswalk.git / blobdiff