package market.guess.ui.desktop;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import market.guess.ui.desktop.util.Charts;
import org.junit.jupiter.api.Test;

class ChartsTest {

  @Test
  void testToEpochSecondFromIndex() {
    double t0 = Charts.toEpochSecond(0);
    double t1 = Charts.toEpochSecond(1);
    double t2 = Charts.toEpochSecond(2);

    assertEquals(Charts.BASE_TIME, t0, 1e-6);
    assertEquals(Charts.BASE_TIME + 1800, t1, 1e-6);
    assertEquals(Charts.BASE_TIME + 3600, t2, 1e-6);
  }

  @Test
  void testToEpochSecondIdempotentForTimestamps() {
    long epoch = 1_700_000_000L;
    assertEquals(epoch, Charts.toEpochSecond(epoch), 1e-6);
  }

  @Test
  void testBaseTimeIsReasonable() {
    assertTrue(Charts.BASE_TIME > 1_700_000_000L);
  }
}