Determining-Encoding.any.js

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This WPT test may be referenced by the following Test IDs:
- /FileAPI/reading-data-section/Determining-Encoding.any.html - WPT Dashboard Interop Dashboard
- /FileAPI/reading-data-section/Determining-Encoding.any.worker.html - WPT Dashboard Interop Dashboard

// META: title=FileAPI Test: Blob Determining Encoding

var t = async_test("Blob Determing Encoding with encoding argument");

t.step(function() {

    // string 'hello'

    var data = [0xFE,0xFF,0x00,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F];

    var blob = new Blob([new Uint8Array(data)]);

    var reader = new FileReader();

    reader.onloadend = t.step_func_done (function(event) {

        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16BE.")

    }, reader);

    reader.readAsText(blob, "UTF-16BE");

});

var t = async_test("Blob Determing Encoding with type attribute");

t.step(function() {

    var data = [0xFE,0xFF,0x00,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F];

    var blob = new Blob([new Uint8Array(data)], {type:"text/plain;charset=UTF-16BE"});

    var reader = new FileReader();

    reader.onloadend = t.step_func_done (function(event) {

        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16BE.")

    }, reader);

    reader.readAsText(blob);

});

var t = async_test("Blob Determing Encoding with UTF-8 BOM");

t.step(function() {

    var data = [0xEF,0xBB,0xBF,0x68,0x65,0x6C,0x6C,0xC3,0xB6];

    var blob = new Blob([new Uint8Array(data)]);

    var reader = new FileReader();

    reader.onloadend = t.step_func_done (function(event) {

        assert_equals(this.result, "hellö", "The FileReader should read the blob with UTF-8.");

    }, reader);

    reader.readAsText(blob);

});

var t = async_test("Blob Determing Encoding without anything implying charset.");

t.step(function() {

    var data = [0x68,0x65,0x6C,0x6C,0xC3,0xB6];

    var blob = new Blob([new Uint8Array(data)]);

    var reader = new FileReader();

    reader.onloadend = t.step_func_done (function(event) {

        assert_equals(this.result, "hellö", "The FileReader should read the blob by default with UTF-8.");

    }, reader);

    reader.readAsText(blob);

});

var t = async_test("Blob Determing Encoding with UTF-16BE BOM");

t.step(function() {

    var data = [0xFE,0xFF,0x00,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F];

    var blob = new Blob([new Uint8Array(data)]);

    var reader = new FileReader();

    reader.onloadend = t.step_func_done (function(event) {

        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16BE.");

    }, reader);

    reader.readAsText(blob);

});

var t = async_test("Blob Determing Encoding with UTF-16LE BOM");

t.step(function() {

    var data = [0xFF,0xFE,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F,0x00];

    var blob = new Blob([new Uint8Array(data)]);

    var reader = new FileReader();

    reader.onloadend = t.step_func_done (function(event) {

        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16LE.");

    }, reader);

    reader.readAsText(blob);

});