SystemMessagesService.java

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package edu.ucsb.cs156.courses.services;
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import edu.ucsb.cs156.courses.models.SystemMessage;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.CopyOnWriteArrayList;
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import org.springframework.stereotype.Service;
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/**
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 * Holds system messages (e.g. startup misconfiguration warnings) for the lifetime of the running
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 * process. Deliberately in-memory rather than persisted: a {@code @Service} bean is a Spring
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 * singleton by default, so this naturally starts empty on every process start with no explicit
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 * "clear on startup" step required, and -- should this app ever run multiple instances -- each
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 * instance reports its own diagnostics rather than a shared table conflating them.
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 */
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@Service
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public class SystemMessagesService {
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  private final List<SystemMessage> messages = new CopyOnWriteArrayList<>();
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  public void addMessage(String variant, String message) {
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    messages.add(SystemMessage.builder().variant(variant).message(message).build());
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  }
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  public List<SystemMessage> getMessages() {
26 1 1. getMessages : replaced return value with Collections.emptyList for edu/ucsb/cs156/courses/services/SystemMessagesService::getMessages → KILLED
 
    return Collections.unmodifiableList(messages);
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  }
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}

Mutations

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1.1
Location : getMessages
Killed by : edu.ucsb.cs156.courses.services.SystemMessagesServiceTests.[engine:junit-jupiter]/[class:edu.ucsb.cs156.courses.services.SystemMessagesServiceTests]/[method:addMessage_appendsInOrder()] replaced return value with Collections.emptyList for edu/ucsb/cs156/courses/services/SystemMessagesService::getMessages → KILLED

Active mutators

Tests examined


Report generated by PIT 1.17.0