package com.opengamma.sesame.credit.snapshot;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.testng.AssertJUnit.assertFalse;
import static org.testng.AssertJUnit.assertTrue;

import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import org.threeten.bp.LocalDate;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSortedMap;
import com.opengamma.DataNotFoundException;
import com.opengamma.core.link.SnapshotLink;
import com.opengamma.financial.analytics.isda.credit.YieldCurveData;
import com.opengamma.financial.analytics.isda.credit.YieldCurveDataSnapshot;
import com.opengamma.financial.convention.businessday.BusinessDayConventions;
import com.opengamma.financial.convention.daycount.DayCounts;
import com.opengamma.sesame.Environment;
import com.opengamma.util.money.Currency;
import com.opengamma.util.result.Result;
import com.opengamma.util.test.TestGroup;
import com.opengamma.util.time.Tenor;

/**
 * Tests {@link SnapshotYieldCurveDataProviderFn}.
 */
@Test(groups = TestGroup.UNIT)
public class SnapshotYieldCurveDataProviderFnTest {
  
  private static YieldCurveData YIELD_CURVE_DATA;
  static {
    YIELD_CURVE_DATA = YieldCurveData.builder()
        .cashDayCount(DayCounts.ACT_360)
        .currency(Currency.USD)
        .curveBusinessDayConvention(BusinessDayConventions.MODIFIED_FOLLOWING)
        .curveDayCount(DayCounts.ACT_365)
        .regionId(null)//weekend only calendar
        .spotDate(LocalDate.of(2014, 1, 1))
        .swapDayCount(DayCounts.THIRTY_360)
        .swapFixedLegInterval(Tenor.ONE_YEAR)
        .cashData(ImmutableSortedMap.of(Tenor.ONE_MONTH, 0.00445))
        .swapData(ImmutableSortedMap.of(Tenor.ONE_YEAR, 0.00445))
        .build();
  }
  private Environment _env;
  private SnapshotYieldCurveDataProviderFn _fnWithBadLink;
  private SnapshotYieldCurveDataProviderFn _fnWithUSDCurve;

  @SuppressWarnings("unchecked")
  @BeforeClass
  public void beforeClass() {
    _env = mock(Environment.class);
    SnapshotLink<YieldCurveDataSnapshot> badLink = mock(SnapshotLink.class);
    when(badLink.resolve()).thenThrow(new DataNotFoundException("test"));
    _fnWithBadLink = new SnapshotYieldCurveDataProviderFn(badLink);
    YieldCurveDataSnapshot snapshot =
        YieldCurveDataSnapshot.builder()
                              .name("")
                              .yieldCurves(ImmutableMap.of(Currency.USD, YIELD_CURVE_DATA))
                              .build();
    SnapshotLink<YieldCurveDataSnapshot> goodLink = SnapshotLink.resolved(snapshot);
    _fnWithUSDCurve = new SnapshotYieldCurveDataProviderFn(goodLink);
  }
  
  @Test(expectedExceptions = {DataNotFoundException.class})
  public void testFnWithBadLink() {
    Result<YieldCurveData> result = _fnWithBadLink.retrieveYieldCurveData(_env, Currency.USD);
    assertFalse("Link threw exception so function should fail.", result.isSuccess());
  }

  @Test
  public void testFnMissingData() {
    Result<YieldCurveData> result = _fnWithUSDCurve.retrieveYieldCurveData(_env, Currency.GBP);
    assertFalse("GBP is missing so result should be failure.", result.isSuccess());
  }

  @Test
  public void testFn() {
    Result<YieldCurveData> result = _fnWithUSDCurve.retrieveYieldCurveData(_env, Currency.USD);
    assertTrue("USD present in snapshot so should succeed.", result.isSuccess());
  }

}