import org.junit.jupiter.api.Disabled; import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Test; import java.util.Arrays; import java.util.Collections; import java.util.List; import static org.assertj.core.api.Assertions.assertThat; public class PythagoreanTripletTest { @Test @DisplayName("triplets whose sum is 12") public void tripletsWhoseSumIs12() { List actual = PythagoreanTriplet .makeTripletsList() .thatSumTo(12) .build(); List expected = Collections.singletonList(new PythagoreanTriplet(3, 4, 5)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test @DisplayName("triplets whose sum is 108") public void tripletsWhoseSumIs108() { List actual = PythagoreanTriplet .makeTripletsList() .thatSumTo(108) .build(); List expected = Collections.singletonList(new PythagoreanTriplet(27, 36, 45)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test @DisplayName("triplets whose sum is 1000") public void tripletsWhoseSumIs1000() { List actual = PythagoreanTriplet .makeTripletsList() .withFactorsLessThanOrEqualTo(1000) .thatSumTo(1000) .build(); List expected = Collections.singletonList(new PythagoreanTriplet(200, 375, 425)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test @DisplayName("no matching triplets for 1001") public void tripletsWhoseSumIs1001() { List actual = PythagoreanTriplet .makeTripletsList() .thatSumTo(1001) .build(); List expected = Collections.emptyList(); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test @DisplayName("returns all matching triplets") public void tripletsWhoseSumIs90() { List actual = PythagoreanTriplet .makeTripletsList() .thatSumTo(90) .build(); List expected = Arrays.asList( new PythagoreanTriplet(9, 40, 41), new PythagoreanTriplet(15, 36, 39)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test @DisplayName("several matching triplets") public void tripletsWhoseSumIs840() { List actual = PythagoreanTriplet .makeTripletsList() .thatSumTo(840) .build(); List expected = Arrays.asList( new PythagoreanTriplet(40, 399, 401), new PythagoreanTriplet(56, 390, 394), new PythagoreanTriplet(105, 360, 375), new PythagoreanTriplet(120, 350, 370), new PythagoreanTriplet(140, 336, 364), new PythagoreanTriplet(168, 315, 357), new PythagoreanTriplet(210, 280, 350), new PythagoreanTriplet(240, 252, 348)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test public void tripletsWhoseSumIs840WithFactorsLessThanOrEqualTo370() { List actual = PythagoreanTriplet .makeTripletsList() .withFactorsLessThanOrEqualTo(370) .thatSumTo(840) .build(); List expected = Arrays.asList( new PythagoreanTriplet(120, 350, 370), new PythagoreanTriplet(140, 336, 364), new PythagoreanTriplet(168, 315, 357), new PythagoreanTriplet(210, 280, 350), new PythagoreanTriplet(240, 252, 348)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test @DisplayName("triplets for large number") public void tripletsWhoseSumIs30000() { List actual = PythagoreanTriplet .makeTripletsList() .thatSumTo(30000) .build(); List expected = Arrays.asList( new PythagoreanTriplet(1200, 14375, 14425), new PythagoreanTriplet(1875, 14000, 14125), new PythagoreanTriplet(5000, 12000, 13000), new PythagoreanTriplet(6000, 11250, 12750), new PythagoreanTriplet(7500, 10000, 12500)); assertThat(actual).isEqualTo(expected); } @Disabled("Remove to run test") @Test public void tripletsWhoseSumIs30000WithFactorsLessThanOrEqualTo12500() { List actual = PythagoreanTriplet .makeTripletsList() .withFactorsLessThanOrEqualTo(12500) .thatSumTo(30000) .build(); List expected = Arrays.asList(new PythagoreanTriplet(7500, 10000, 12500)); assertThat(actual).isEqualTo(expected); } }