java11-enumset/src/test/java/EnumSetTest.java at master · mtumilowicz/java11-enumset · GitHub

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import org.junit.Test;

import java.time.DayOfWeek;

import java.util.EnumSet;

import static org.hamcrest.Matchers.*;

import static org.hamcrest.MatcherAssert.assertThat;

import static org.junit.Assert.assertTrue;

/**

* Created by mtumilowicz on 2018-12-04.

public class EnumSetTest {

@Test

public void allOf() {

EnumSet<DayOfWeek> dayOfWeeks = EnumSet.allOf(DayOfWeek.class);

assertThat(dayOfWeeks.size(), is(7));

assertThat(dayOfWeeks, contains(

DayOfWeek.MONDAY,

DayOfWeek.TUESDAY,

DayOfWeek.WEDNESDAY,

DayOfWeek.THURSDAY,

DayOfWeek.FRIDAY,

DayOfWeek.SATURDAY,

DayOfWeek.SUNDAY)

);

}

@Test

public void allOf_notImmutable() {

EnumSet<DayOfWeek> dayOfWeeks = EnumSet.allOf(DayOfWeek.class);

dayOfWeeks.clear();

assertTrue(dayOfWeeks.isEmpty());

}

@Test

public void complementOf() {

EnumSet<DayOfWeek> withoutWeekendDays = EnumSet.complementOf(

EnumSet.of(DayOfWeek.SATURDAY, DayOfWeek.SUNDAY)

);

assertThat(withoutWeekendDays.size(), is(5));

assertThat(withoutWeekendDays, contains(

DayOfWeek.MONDAY,

DayOfWeek.TUESDAY,

DayOfWeek.WEDNESDAY,

DayOfWeek.THURSDAY,

DayOfWeek.FRIDAY)

);

}

@Test

public void complementOf_notImmutable() {

EnumSet<DayOfWeek> withoutWeekendDays = EnumSet.complementOf(

EnumSet.of(DayOfWeek.SATURDAY, DayOfWeek.SUNDAY)

);

withoutWeekendDays.clear();

assertTrue(withoutWeekendDays.isEmpty());

}

@Test

public void range() {

EnumSet<DayOfWeek> workingDays = EnumSet.range(DayOfWeek.MONDAY, DayOfWeek.FRIDAY);

assertThat(workingDays.size(), is(5));

assertThat(workingDays, contains(

DayOfWeek.MONDAY,

DayOfWeek.TUESDAY,

DayOfWeek.WEDNESDAY,

DayOfWeek.THURSDAY,

DayOfWeek.FRIDAY)

);

}

@Test

public void range_notImmutable() {

EnumSet<DayOfWeek> workingDays = EnumSet.range(DayOfWeek.MONDAY, DayOfWeek.FRIDAY);

workingDays.clear();

assertTrue(workingDays.isEmpty());

}

@Test

public void noneOf() {

EnumSet<DayOfWeek> emptyDays = EnumSet.noneOf(DayOfWeek.class);

assertTrue(emptyDays.isEmpty());

emptyDays.add(DayOfWeek.SATURDAY);

assertThat(emptyDays, contains(DayOfWeek.SATURDAY));

}

java11-enumset/src/test/java/EnumSetTest.java at master · mtumilowicz/java11-enumset · GitHub

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