textencoder-utf16-surrogates.any.js

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// META: global=window,dedicatedworker,shadowrealm

// META: title=Encoding API: USVString surrogate handling when encoding

var bad = [

        input: '\uD800',

        expected: '\uFFFD',

        name: 'lone surrogate lead'

},

        input: '\uDC00',

        expected: '\uFFFD',

        name: 'lone surrogate trail'

},

        input: '\uD800\u0000',

        expected: '\uFFFD\u0000',

        name: 'unmatched surrogate lead'

},

        input: '\uDC00\u0000',

        expected: '\uFFFD\u0000',

        name: 'unmatched surrogate trail'

},

        input: '\uDC00\uD800',

        expected: '\uFFFD\uFFFD',

        name: 'swapped surrogate pair'

},

        input: '\uD834\uDD1E',

        expected: '\uD834\uDD1E',

        name: 'properly encoded MUSICAL SYMBOL G CLEF (U+1D11E)'

];

bad.forEach(function(t) {

    test(function() {

        var encoded = new TextEncoder().encode(t.input);

        var decoded = new TextDecoder().decode(encoded);

        assert_equals(decoded, t.expected);

    }, 'USVString handling: ' + t.name);

});

test(function() {

    assert_equals(new TextEncoder().encode().length, 0, 'Should default to empty string');

}, 'USVString default');