gecko-dev/storage/test/unit/test_locale_collation.js

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JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* Bug 499990 - Locale-aware collation
*
* Tests our custom, locale-aware collating sequences.
*/
// The name of the file containing the strings we'll sort during this test.
// The file's data is taken from intl/locale/tests/sort/us-ascii_base.txt and
// and intl/locale/tests/sort/us-ascii_sort.txt.
const DATA_BASENAME = "locale_collation.txt";
// The test data from DATA_BASENAME is read into this array.
var gStrings;
// A collation created from the application's locale. Used by localeCompare().
var gLocaleCollation;
// A connection to our in-memory UTF-16-encoded database.
var gUtf16Conn;
///////////////////////////////////////////////////////////////////////////////
//// Helper Functions
/**
* Since we create a UTF-16 database we have to clean it up, in addition to
* the normal cleanup of Storage tests.
*/
function cleanupLocaleTests()
{
print("-- Cleaning up test_locale_collation.js suite.");
gUtf16Conn.close();
cleanup();
}
/**
* Creates a test database similar to the default one created in
* head_storage.js, except that this one uses UTF-16 encoding.
*
* @return A connection to the database.
*/
function createUtf16Database()
{
print("Creating the in-memory UTF-16-encoded database.");
let conn = getService().openSpecialDatabase("memory");
conn.executeSimpleSQL("PRAGMA encoding = 'UTF-16'");
print("Make sure the encoding was set correctly and is now UTF-16.");
let stmt = conn.createStatement("PRAGMA encoding");
do_check_true(stmt.executeStep());
let enc = stmt.getString(0);
stmt.finalize();
// The value returned will actually be UTF-16le or UTF-16be.
do_check_true(enc === "UTF-16le" || enc === "UTF-16be");
return conn;
}
/**
* Compares aActual to aExpected, ensuring that the numbers and orderings of
* the two arrays' elements are the same.
*
* @param aActual
* An array of strings retrieved from the database.
* @param aExpected
* An array of strings to which aActual should be equivalent.
*/
function ensureResultsAreCorrect(aActual, aExpected)
{
print("Actual results: " + aActual);
print("Expected results: " + aExpected);
do_check_eq(aActual.length, aExpected.length);
for (let i = 0; i < aActual.length; i++)
do_check_eq(aActual[i], aExpected[i]);
}
/**
* Synchronously SELECTs all rows from the test table of the given database
* using the given collation.
*
* @param aCollation
* The name of one of our custom locale collations. The rows are
* ordered by this collation.
* @param aConn
* A connection to either the UTF-8 database or the UTF-16 database.
* @return The resulting strings in an array.
*/
function getResults(aCollation, aConn)
{
let results = [];
let stmt = aConn.createStatement("SELECT t FROM test " +
"ORDER BY t COLLATE " + aCollation + " ASC");
while (stmt.executeStep())
results.push(stmt.row.t);
stmt.finalize();
return results;
}
/**
* Inserts strings into our test table of the given database in the order given.
*
* @param aStrings
* An array of strings.
* @param aConn
* A connection to either the UTF-8 database or the UTF-16 database.
*/
function initTableWithStrings(aStrings, aConn)
{
print("Initializing test table.");
aConn.executeSimpleSQL("DROP TABLE IF EXISTS test");
aConn.createTable("test", "t TEXT");
let stmt = aConn.createStatement("INSERT INTO test (t) VALUES (:t)");
aStrings.forEach(function (str) {
stmt.params.t = str;
stmt.execute();
stmt.reset();
});
stmt.finalize();
}
/**
* Returns a sorting function suitable for passing to Array.prototype.sort().
* The returned function uses the application's locale to compare strings.
*
* @param aCollation
* The name of one of our custom locale collations. The sorting
* strength is computed from this value.
* @return A function to use as a sorting callback.
*/
function localeCompare(aCollation)
{
var strength;
switch (aCollation) {
case "locale":
strength = Ci.nsICollation.kCollationCaseInSensitive;
break;
case "locale_case_sensitive":
strength = Ci.nsICollation.kCollationAccentInsenstive;
break;
case "locale_accent_sensitive":
strength = Ci.nsICollation.kCollationCaseInsensitiveAscii;
break;
case "locale_case_accent_sensitive":
strength = Ci.nsICollation.kCollationCaseSensitive;
break;
default:
do_throw("Error in test: unknown collation '" + aCollation + "'");
break;
}
return function (aStr1, aStr2)
gLocaleCollation.compareString(strength, aStr1, aStr2);
}
/**
* Reads in the test data from the file DATA_BASENAME and returns it as an array
* of strings.
*
* @return The test data as an array of strings.
*/
function readTestData()
{
print("Reading in test data.");
let file = do_get_file(DATA_BASENAME);
let istream = Cc["@mozilla.org/network/file-input-stream;1"].
createInstance(Ci.nsIFileInputStream);
istream.init(file, -1, -1, 0);
istream.QueryInterface(Components.interfaces.nsILineInputStream);
let line = {};
let lines = [];
while (istream.readLine(line))
lines.push(line.value);
istream.close();
return lines;
}
/**
* Gets the results from the given database using the given collation and
* ensures that they match gStrings sorted by the same collation.
*
* @param aCollation
* The name of one of our custom locale collations. The rows from the
* database and the expected results are ordered by this collation.
* @param aConn
* A connection to either the UTF-8 database or the UTF-16 database.
*/
function runTest(aCollation, aConn)
{
ensureResultsAreCorrect(getResults(aCollation, aConn),
gStrings.slice(0).sort(localeCompare(aCollation)));
}
/**
* Gets the results from the UTF-8 database using the given collation and
* ensures that they match gStrings sorted by the same collation.
*
* @param aCollation
* The name of one of our custom locale collations. The rows from the
* database and the expected results are ordered by this collation.
*/
function runUtf8Test(aCollation)
{
runTest(aCollation, getOpenedDatabase());
}
/**
* Gets the results from the UTF-16 database using the given collation and
* ensures that they match gStrings sorted by the same collation.
*
* @param aCollation
* The name of one of our custom locale collations. The rows from the
* database and the expected results are ordered by this collation.
*/
function runUtf16Test(aCollation)
{
runTest(aCollation, gUtf16Conn);
}
/**
* Sets up the test suite.
*/
function setup()
{
print("-- Setting up the test_locale_collation.js suite.");
gStrings = readTestData();
initTableWithStrings(gStrings, getOpenedDatabase());
gUtf16Conn = createUtf16Database();
initTableWithStrings(gStrings, gUtf16Conn);
let localeSvc = Cc["@mozilla.org/intl/nslocaleservice;1"].
getService(Ci.nsILocaleService);
let collFact = Cc["@mozilla.org/intl/collation-factory;1"].
createInstance(Ci.nsICollationFactory);
gLocaleCollation = collFact.CreateCollation(localeSvc.getApplicationLocale());
}
///////////////////////////////////////////////////////////////////////////////
//// Test Runs
let gTests = [
{
desc: "Case and accent sensitive UTF-8",
run: function () runUtf8Test("locale_case_accent_sensitive")
},
{
desc: "Case sensitive, accent insensitive UTF-8",
run: function () runUtf8Test("locale_case_sensitive")
},
{
desc: "Case insensitive, accent sensitive UTF-8",
run: function () runUtf8Test("locale_accent_sensitive")
},
{
desc: "Case and accent insensitive UTF-8",
run: function () runUtf8Test("locale")
},
{
desc: "Case and accent sensitive UTF-16",
run: function () runUtf16Test("locale_case_accent_sensitive")
},
{
desc: "Case sensitive, accent insensitive UTF-16",
run: function () runUtf16Test("locale_case_sensitive")
},
{
desc: "Case insensitive, accent sensitive UTF-16",
run: function () runUtf16Test("locale_accent_sensitive")
},
{
desc: "Case and accent insensitive UTF-16",
run: function () runUtf16Test("locale")
},
];
function run_test()
{
setup();
gTests.forEach(function (test) {
print("-- Running test: " + test.desc);
test.run();
});
}