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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Tests for the liblouis Native Client wrapper, as seen from
* the JavaScript interface.
*/
// Include test fixture.
GEN_INCLUDE(['../testing/chromevox_e2e_test_base.js',
'../testing/assert_additions.js']);
/**
* @constructor
* @extends {ChromeVoxE2ETest}
*/
function CvoxLibLouisTest() {
ChromeVoxE2ETest.call(this);
}
CvoxLibLouisTest.prototype = {
__proto__: ChromeVoxE2ETest.prototype,
createLiblouis: function() {
return new cvox.LibLouis(
chrome.extension.getURL('braille/liblouis_nacl.nmf'),
chrome.extension.getURL('braille/tables'));
},
createAndAttachLiblouis: function() {
var liblouis = this.createLiblouis();
liblouis.attachToElement(document.body);
return liblouis;
},
withTranslator: function(liblouis, tableNames, callback) {
liblouis.getTranslator(tableNames, this.newCallback(callback));
},
};
function assertEqualsUint8Array(expected, actual) {
var as_array = [];
var uint8array = new Uint8Array(actual);
for (var i = 0; i < uint8array.length; ++i) {
as_array[i] = uint8array[i];
}
assertEqualsJSON(expected, as_array);
}
TEST_F('CvoxLibLouisTest', 'checkAllTables', function() {
var liblouis = this.createAndAttachLiblouis();
cvox.BrailleTable.getAll(this.newCallback(function(tables) {
var i = 0;
var checkNextTable = function() {
var table = tables[i++];
if (table) {
this.withTranslator(liblouis, table.fileNames, function(translator) {
assertNotEquals(null, translator,
'Table ' + table + ' should be valid');
checkNextTable();
});
}
}.bind(this);
checkNextTable();
}.bind(this)));
});
TEST_F('CvoxLibLouisTest', 'testTranslateComputerBraille', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'en-us-comp8.ctb', function(translator) {
translator.translate('Hello!', this.newCallback(
function(cells, textToBraille, brailleToText) {
assertEqualsUint8Array([0x53, 0x11, 0x07, 0x07, 0x15, 0x2e], cells);
assertEqualsJSON([0, 1, 2, 3, 4, 5], textToBraille);
assertEqualsJSON([0, 1, 2, 3, 4, 5], brailleToText);
}));
});
});
TEST_F('CvoxLibLouisTest', 'testBackTranslateComputerBraille', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'en-us-comp8.ctb', function(translator) {
var cells = new Uint8Array([0x53, 0x11, 0x07, 0x07, 0x15, 0x2e]);
translator.backTranslate(cells.buffer, this.newCallback(function(text) {
assertEquals('Hello!', text);
}));
});
});
TEST_F('CvoxLibLouisTest', 'testTranslateGermanGrade2Braille', function() {
var liblouis = this.createAndAttachLiblouis();
// This is one of the moderately large tables.
this.withTranslator(liblouis, 'de-de-g2.ctb', function(translator) {
translator.translate('München', this.newCallback(
function(cells, textToBraille, brailleToText) {
assertEqualsUint8Array([0x0d, 0x33, 0x1d, 0x39, 0x09], cells);
assertEqualsJSON([0, 1, 2, 3, 3, 4, 4], textToBraille);
assertEqualsJSON([0, 1, 2, 3, 5], brailleToText);
}));
});
});
TEST_F('CvoxLibLouisTest', 'testBackTranslateGermanComputerBraille', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'de-de-comp8.ctb', function(translator) {
var cells = new Uint8Array([0xb3]);
translator.backTranslate(cells.buffer, this.newCallback(function(text) {
assertEquals('ü', text);
}));
});
});
TEST_F('CvoxLibLouisTest', 'testBackTranslateEmptyCells', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'de-de-comp8.ctb', function(translator) {
translator.backTranslate(
new Uint8Array().buffer,
this.newCallback(function(text) {
assertNotEquals(null, text);
assertEquals(0, text.length);
}));
});
});
TEST_F('CvoxLibLouisTest', 'testGetTranslatorBeforeAttach', function() {
var liblouis = this.createLiblouis();
assertFalse(liblouis.isAttached());
this.withTranslator(liblouis, 'en-us-comp8.ctb', function(translator) {
assertEquals(null, translator);
});
});
TEST_F('CvoxLibLouisTest', 'testGetInvalidTranslator', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'nonexistant-table', function(translator) {
assertEquals(null, translator);
});
});
TEST_F('CvoxLibLouisTest', 'testTranslateAfterDetach', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'de-de-comp8.ctb', function(translator) {
liblouis.detach();
translator.translate('Hamburg', this.newCallback(
function(cells, textToBraille, brailleToText) {
assertEquals(null, cells);
assertEquals(null, textToBraille);
assertEquals(null, brailleToText);
}));
});
});
TEST_F('CvoxLibLouisTest', 'testDetachWithOutstandingCallbacks', function() {
var liblouis = this.createAndAttachLiblouis();
this.withTranslator(liblouis, 'de-de-comp8.ctb', function(translator) {
var called = false;
translator.translate('Berlin', this.newCallback(
function(cells, textToBraille, brailleToText) {
assertEquals(null, cells);
assertEquals(null, textToBraille);
assertEquals(null, brailleToText);
called = true;
}));
assertFalse(called);
liblouis.detach();
});
});
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