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package com.yahoo.vespa.hosted.controller.api.integration.billing;
import org.junit.jupiter.api.Test;
import java.time.Clock;
import java.time.ZonedDateTime;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import static org.junit.jupiter.api.Assertions.assertThrows;
/**
* @author gjoranv
*/
public class StatusHistoryTest {
private final Clock clock = Clock.systemUTC();
@Test
void open_can_change_to_any_status() {
var history = StatusHistory.open(clock);
history.checkValidTransition(BillStatus.FROZEN);
history.checkValidTransition(BillStatus.CLOSED);
history.checkValidTransition(BillStatus.VOID);
}
@Test
void frozen_cannot_change_to_open() {
var history = new StatusHistory(historyWith(BillStatus.FROZEN));
history.checkValidTransition(BillStatus.CLOSED);
history.checkValidTransition(BillStatus.VOID);
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.OPEN));
}
@Test
void closed_cannot_change() {
var history = new StatusHistory(historyWith(BillStatus.CLOSED));
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.OPEN));
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.FROZEN));
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.VOID));
}
@Test
void void_cannot_change() {
var history = new StatusHistory(historyWith(BillStatus.VOID));
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.OPEN));
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.FROZEN));
assertThrows(IllegalArgumentException.class, () -> history.checkValidTransition(BillStatus.CLOSED));
}
@Test
void any_status_can_change_to_itself() {
var history = new StatusHistory(historyWith(BillStatus.OPEN));
history.checkValidTransition(BillStatus.OPEN);
history = new StatusHistory(historyWith(BillStatus.FROZEN));
history.checkValidTransition(BillStatus.FROZEN);
history = new StatusHistory(historyWith(BillStatus.CLOSED));
history.checkValidTransition(BillStatus.CLOSED);
history = new StatusHistory(historyWith(BillStatus.VOID));
history.checkValidTransition(BillStatus.VOID);
}
@Test
void it_validates_status_history_in_constructor() {
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.FROZEN, BillStatus.OPEN)));
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.CLOSED, BillStatus.OPEN)));
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.CLOSED, BillStatus.FROZEN)));
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.CLOSED, BillStatus.VOID)));
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.VOID, BillStatus.OPEN)));
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.VOID, BillStatus.FROZEN)));
assertThrows(IllegalArgumentException.class, () -> new StatusHistory(historyWith(BillStatus.VOID, BillStatus.CLOSED)));
}
private SortedMap<ZonedDateTime, BillStatus> historyWith(BillStatus... statuses) {
var history = new TreeMap<>(Map.of(ZonedDateTime.now(clock), BillStatus.OPEN));
for (var status : statuses) {
history.put(ZonedDateTime.now(clock), status);
}
return history;
}
}
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