io.github.olib963.javatest.matchers.internal.MessageMatcher Maven / Gradle / Ivy

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Matchers to create assertions from common conditions

There is a newer version: 0.2.0

package io.github.olib963.javatest.matchers.internal;

import io.github.olib963.javatest.matchers.MatchResult;
import io.github.olib963.javatest.matchers.Matcher;

public class MessageMatcher implements Matcher {
    private final Matcher messageMatcher;

    public MessageMatcher(Matcher messageMatcher) {
        this.messageMatcher = messageMatcher;
    }

    @Override
    public MatchResult matches(Throwable value) {
        var message = value.getMessage();
        return messageMatcher.matches(message)
                .mapMismatch(mismatch -> "message {" + message + "} " + mismatch);
    }

    @Override
    public String describeExpected() {
        return "have a message that was expected to " + messageMatcher.describeExpected();
    }
}