OandaProviderHelper implements ProviderHelper<String> { @Override public String fromIsoFormat(String instrument) { return OandaUtils.isoCcyToOandaCcy(instrument); }  @Override String fromIsoFormat(String instrument); @Override String fromPairSeparatorFormat(String instrument); @Override String toIsoFormat(String instrument); @Override String fromHashTagCurrency(String instrument); @Override String getLongNotation(); @Override String getShortNotation();  }
@Test public void fromIsoFormatTest() { String currencyPair = providerHelper.fromIsoFormat("XAUUSD"); assertEquals("XAU_USD", currencyPair); }