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package org.apache.james.mailetcontainer.impl.matchers;

import static org.apache.mailet.base.MailAddressFixture.ANY_AT_JAMES;
import static org.apache.mailet.base.MailAddressFixture.ANY_AT_JAMES2;
import static org.apache.mailet.base.MailAddressFixture.OTHER_AT_JAMES;
import static org.apache.mailet.base.MailAddressFixture.OTHER_AT_JAMES2;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import org.apache.james.core.MailAddress;
import org.apache.james.server.core.MailImpl;
import org.apache.mailet.Mail;
import org.apache.mailet.Matcher;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import com.google.common.collect.ImmutableList;

class OrTest {
    private Or testee;
    private Matcher matcher1;
    private Matcher matcher2;
    private Mail mail;

    @BeforeEach
    void setUp() throws Exception {
        matcher1 = mock(Matcher.class);
        matcher2 = mock(Matcher.class);

        testee = new Or();

        mail = MailImpl.builder().name("name").addRecipients(ANY_AT_JAMES, OTHER_AT_JAMES, ANY_AT_JAMES2, OTHER_AT_JAMES2).build();
    }

    @Test
    void shouldReturnNoResultWhenNoMatcherSpecified() throws Exception {
        assertThat(testee.match(mail)).isEmpty();
    }

    @Test
    void shouldReturnMatchResultWhenOnlyOneMatcher() throws Exception {
        when(matcher1.match(mail)).thenReturn(ImmutableList.of(ANY_AT_JAMES, ANY_AT_JAMES2));

        testee.add(matcher1);

        assertThat(testee.match(mail)).containsOnly(ANY_AT_JAMES, ANY_AT_JAMES2);
    }

    @Test
    void shouldReturnUnionWhenTwoMatchers() throws Exception {
        when(matcher1.match(mail)).thenReturn(ImmutableList.of(ANY_AT_JAMES, ANY_AT_JAMES2));
        when(matcher2.match(mail)).thenReturn(ImmutableList.of(ANY_AT_JAMES, OTHER_AT_JAMES));

        testee.add(matcher1);
        testee.add(matcher2);

        assertThat(testee.match(mail)).containsOnly(ANY_AT_JAMES, ANY_AT_JAMES2, OTHER_AT_JAMES);
    }

    @Test
    void shouldAcceptEmptyResults() throws Exception {
        when(matcher1.match(mail)).thenReturn(ImmutableList.of(ANY_AT_JAMES, ANY_AT_JAMES2));
        when(matcher2.match(mail)).thenReturn(ImmutableList.<MailAddress>of());

        testee.add(matcher1);
        testee.add(matcher2);

        assertThat(testee.match(mail)).containsOnly(ANY_AT_JAMES, ANY_AT_JAMES2);
    }

    @Test
    void shouldAcceptNullResults() throws Exception {
        when(matcher1.match(mail)).thenReturn(ImmutableList.of(ANY_AT_JAMES, ANY_AT_JAMES2));
        when(matcher2.match(mail)).thenReturn(null);

        testee.add(matcher1);
        testee.add(matcher2);

        assertThat(testee.match(mail)).containsOnly(ANY_AT_JAMES, ANY_AT_JAMES2);
    }
}
