org.apache.james.jmap.model.MessagePreviewGeneratorTest.java Source code

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Here is the source code for org.apache.james.jmap.model.MessagePreviewGeneratorTest.java

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package org.apache.james.jmap.model;

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

import java.util.Optional;

import org.apache.commons.lang3.StringUtils;
import org.junit.Before;
import org.junit.Test;

public class MessagePreviewGeneratorTest {

    private MessagePreviewGenerator testee;

    @Before
    public void setUp() {
        testee = new MessagePreviewGenerator();
    }

    @Test
    public void computeShouldReturnStringEmptyWhenEmptyTextBody() throws Exception {
        assertThat(testee.compute(Optional.empty())).isEqualTo(MessagePreviewGenerator.NO_BODY);
    }

    @Test
    public void computeShouldReturnStringEmptyWhenStringEmptyTextBody() throws Exception {
        assertThat(testee.compute(Optional.of(""))).isEqualTo(MessagePreviewGenerator.NO_BODY);
    }

    @Test
    public void computeShouldReturnStringWithoutTruncation() throws Exception {
        String body = StringUtils.leftPad("a", 100, "b");

        assertThat(testee.compute(Optional.of(body))).hasSize(100).isEqualTo(body);
    }

    @Test
    public void computeShouldReturnStringIsLimitedTo256Length() throws Exception {
        String body = StringUtils.leftPad("a", 300, "b");
        String expected = StringUtils.leftPad("b", MessagePreviewGenerator.MAX_PREVIEW_LENGTH, "b");

        assertThat(testee.compute(Optional.of(body))).hasSize(MessagePreviewGenerator.MAX_PREVIEW_LENGTH)
                .isEqualTo(expected);
    }

    @Test
    public void computeShouldReturnNormalizeSpaceString() throws Exception {
        String body = "    this      is\n      the\r           preview\t         content\n\n         ";

        assertThat(testee.compute(Optional.of(body))).isEqualTo("this is the preview content");
    }
}