core/src/test/java/org/apache/jsieve/DiscardTest.java

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package org.apache.jsieve;

import static org.assertj.core.api.Assertions.assertThat;

import org.apache.jsieve.exception.SyntaxException;
import org.apache.jsieve.mail.Action;
import org.apache.jsieve.mail.ActionDiscard;
import org.apache.jsieve.mail.MailAdapter;
import org.apache.jsieve.utils.JUnitUtils;
import org.assertj.core.api.Condition;
import org.junit.Test;

public class DiscardTest {

    private static final Condition<Action> INSTANCE_OF_ACTION_DISCARDED = new Condition<Action>() {
        @Override
        public boolean matches(Action action) {
            return action instanceof ActionDiscard;
        }
    };

    @Test(expected = SyntaxException.class)
    public void discardShouldThrowOnInvalidArguments() throws Exception {
        String script = "discard 1 ;";

        JUnitUtils.interpret(JUnitUtils.createMail(), script);
    }

    @Test(expected = SyntaxException.class)
    public void discardShouldThrowOnInvalidFollowingBlock() throws Exception {
        String script = "discard {throwTestException;}";

        JUnitUtils.interpret(JUnitUtils.createMail(), script);
    }

    @Test
    public void discardShouldAddOnlyActionDiscard() throws Exception {
        String script = "discard;";

        MailAdapter mail = JUnitUtils.createMail();
        JUnitUtils.interpret(mail, script);

        assertThat(mail.getActions())
            .hasSize(1)
            .are(INSTANCE_OF_ACTION_DISCARDED);
    }

}