public function testAddCurrencyData()
{
$usData = [LocaleSettings::CURRENCY_SYMBOL_KEY => '$'];
$usDataModified = [LocaleSettings::CURRENCY_SYMBOL_KEY => 'AU$'];
$ruData = [LocaleSettings::CURRENCY_SYMBOL_KEY => 'руб.'];
$this->assertEmpty($this->localeSettings->getCurrencyData());
$this->localeSettings->addCurrencyData(['USD' => $usData]);
$this->assertEquals(['USD' => $usData], $this->localeSettings->getCurrencyData());
$this->localeSettings->addCurrencyData(['USD' => $usDataModified, 'RUR' => $ruData]);
$this->assertEquals(['USD' => $usDataModified, 'RUR' => $ruData], $this->localeSettings->getCurrencyData());
}
