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QueueListNodeMainTest.java
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package week4.assignment5;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;
class QueueListNodeMainTest {
@Test
void offer() {
//given
QueueListNodeMain qlnm = new QueueListNodeMain(3);
//when
qlnm.offer(1);
qlnm.offer(2);
qlnm.offer(3);
//then
assertThat(qlnm.size()).isEqualTo(3);
}
@Test
void 큐_꽉참_예외(){
//given
QueueListNodeMain qlnm = new QueueListNodeMain(3);
//when
IllegalStateException e = assertThrows(IllegalStateException.class, () -> {
for (int i = 0; i <= qlnm.size(); i++) {
qlnm.offer(i+1);
}
});
//then
assertThat(e.getMessage()).isEqualTo("큐가 꽉찬 상태입니다.");
}
@Test
void poll() {
//given
QueueListNodeMain qlnm = new QueueListNodeMain(3);
//when
qlnm.offer(1);
qlnm.offer(2);
qlnm.offer(3);
int data = qlnm.poll();
int data2 = qlnm.poll();
int data3 = qlnm.poll();
//then
assertThat(data).isEqualTo(1);
assertThat(data2).isEqualTo(2);
assertThat(data3).isEqualTo(3);
}
@Test
void 큐_공백_예외(){
//given
QueueListNodeMain qlnm = new QueueListNodeMain(3);
//when
IllegalStateException e = assertThrows(IllegalStateException.class, () -> {
qlnm.poll();
});
//then
assertThat(e.getMessage()).isEqualTo("큐가 빈 상태입니다.");
}
}