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-rw-r--r--testing/web-platform/tests/encoding/textdecoder-streaming.any.js89
1 files changed, 89 insertions, 0 deletions
diff --git a/testing/web-platform/tests/encoding/textdecoder-streaming.any.js b/testing/web-platform/tests/encoding/textdecoder-streaming.any.js
new file mode 100644
index 0000000000..e473a7056e
--- /dev/null
+++ b/testing/web-platform/tests/encoding/textdecoder-streaming.any.js
@@ -0,0 +1,89 @@
+// META: title=Encoding API: Streaming decode
+// META: global=window,worker
+// META: script=resources/encodings.js
+// META: script=/common/sab.js
+
+var string = '\x00123ABCabc\x80\xFF\u0100\u1000\uFFFD\uD800\uDC00\uDBFF\uDFFF';
+var octets = {
+ 'utf-8': [0x00,0x31,0x32,0x33,0x41,0x42,0x43,0x61,0x62,0x63,0xc2,0x80,
+ 0xc3,0xbf,0xc4,0x80,0xe1,0x80,0x80,0xef,0xbf,0xbd,0xf0,0x90,
+ 0x80,0x80,0xf4,0x8f,0xbf,0xbf],
+ 'utf-16le': [0x00,0x00,0x31,0x00,0x32,0x00,0x33,0x00,0x41,0x00,0x42,0x00,
+ 0x43,0x00,0x61,0x00,0x62,0x00,0x63,0x00,0x80,0x00,0xFF,0x00,
+ 0x00,0x01,0x00,0x10,0xFD,0xFF,0x00,0xD8,0x00,0xDC,0xFF,0xDB,
+ 0xFF,0xDF],
+ 'utf-16be': [0x00,0x00,0x00,0x31,0x00,0x32,0x00,0x33,0x00,0x41,0x00,0x42,
+ 0x00,0x43,0x00,0x61,0x00,0x62,0x00,0x63,0x00,0x80,0x00,0xFF,
+ 0x01,0x00,0x10,0x00,0xFF,0xFD,0xD8,0x00,0xDC,0x00,0xDB,0xFF,
+ 0xDF,0xFF]
+};
+
+["ArrayBuffer", "SharedArrayBuffer"].forEach((arrayBufferOrSharedArrayBuffer) => {
+ Object.keys(octets).forEach(function(encoding) {
+ for (var len = 1; len <= 5; ++len) {
+ test(function() {
+ var encoded = octets[encoding];
+
+ var out = '';
+ var decoder = new TextDecoder(encoding);
+ for (var i = 0; i < encoded.length; i += len) {
+ var sub = [];
+ for (var j = i; j < encoded.length && j < i + len; ++j) {
+ sub.push(encoded[j]);
+ }
+ var uintArray = new Uint8Array(createBuffer(arrayBufferOrSharedArrayBuffer, sub.length));
+ uintArray.set(sub);
+ out += decoder.decode(uintArray, {stream: true});
+ }
+ out += decoder.decode();
+ assert_equals(out, string);
+ }, 'Streaming decode: ' + encoding + ', ' + len + ' byte window (' + arrayBufferOrSharedArrayBuffer + ')');
+ }
+ });
+
+ test(() => {
+ function bytes(byteArray) {
+ const view = new Uint8Array(createBuffer(arrayBufferOrSharedArrayBuffer, byteArray.length));
+ view.set(byteArray);
+ return view;
+ }
+
+ const decoder = new TextDecoder();
+
+ assert_equals(decoder.decode(bytes([0xC1]), {stream: true}), "\uFFFD");
+ assert_equals(decoder.decode(), "");
+
+ assert_equals(decoder.decode(bytes([0xF5]), {stream: true}), "\uFFFD");
+ assert_equals(decoder.decode(), "");
+
+ assert_equals(decoder.decode(bytes([0xE0, 0x41]), {stream: true}), "\uFFFDA");
+ assert_equals(decoder.decode(bytes([0x42])), "B");
+
+ assert_equals(decoder.decode(bytes([0xE0, 0x80]), {stream: true}), "\uFFFD\uFFFD");
+ assert_equals(decoder.decode(bytes([0x80])), "\uFFFD");
+
+ assert_equals(decoder.decode(bytes([0xED, 0xA0]), {stream: true}), "\uFFFD\uFFFD");
+ assert_equals(decoder.decode(bytes([0x80])), "\uFFFD");
+
+ assert_equals(decoder.decode(bytes([0xF0, 0x41]), {stream: true}), "\uFFFDA");
+ assert_equals(decoder.decode(bytes([0x42]), {stream: true}), "B");
+ assert_equals(decoder.decode(bytes([0x43])), "C");
+
+ assert_equals(decoder.decode(bytes([0xF0, 0x80]), {stream: true}), "\uFFFD\uFFFD");
+ assert_equals(decoder.decode(bytes([0x80]), {stream: true}), "\uFFFD");
+ assert_equals(decoder.decode(bytes([0x80])), "\uFFFD");
+
+ assert_equals(decoder.decode(bytes([0xF4, 0xA0]), {stream: true}), "\uFFFD\uFFFD");
+ assert_equals(decoder.decode(bytes([0x80]), {stream: true}), "\uFFFD");
+ assert_equals(decoder.decode(bytes([0x80])), "\uFFFD");
+
+ assert_equals(decoder.decode(bytes([0xF0, 0x90, 0x41]), {stream: true}), "\uFFFDA");
+ assert_equals(decoder.decode(bytes([0x42])), "B");
+
+ // 4-byte UTF-8 sequences always correspond to non-BMP characters. Here
+ // we make sure that, although the first 3 bytes are enough to emit the
+ // lead surrogate, it only gets emitted when the fourth byte is read.
+ assert_equals(decoder.decode(bytes([0xF0, 0x9F, 0x92]), {stream: true}), "");
+ assert_equals(decoder.decode(bytes([0xA9])), "\u{1F4A9}");
+ }, `Streaming decode: UTF-8 chunk tests (${arrayBufferOrSharedArrayBuffer})`);
+})