TestMultipartFormHttpEntity.java

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.http.entity.mime;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;

import org.apache.http.Header;
import org.apache.http.HeaderElement;
import org.apache.http.NameValuePair;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.entity.mime.content.StringBody;
import org.junit.Assert;
import org.junit.Test;

public class TestMultipartFormHttpEntity {

    @Test
    public void testExplictContractorParams() throws Exception {
        MultipartEntity entity = new MultipartEntity(
                HttpMultipartMode.BROWSER_COMPATIBLE,
                "whatever",
                Charset.forName("UTF-8"));

        Assert.assertNull(entity.getContentEncoding());
        Assert.assertNotNull(entity.getContentType());
        Header header = entity.getContentType();
        HeaderElement[] elems = header.getElements();
        Assert.assertNotNull(elems);
        Assert.assertEquals(1, elems.length);

        HeaderElement elem = elems[0];
        Assert.assertEquals("multipart/form-data", elem.getName());
        NameValuePair p1 = elem.getParameterByName("boundary");
        Assert.assertNotNull(p1);
        Assert.assertEquals("whatever", p1.getValue());
        NameValuePair p2 = elem.getParameterByName("charset");
        Assert.assertNotNull(p2);
        Assert.assertEquals("UTF-8", p2.getValue());
    }

    @Test
    public void testImplictContractorParams() throws Exception {
        MultipartEntity entity = new MultipartEntity();
        Assert.assertNull(entity.getContentEncoding());
        Assert.assertNotNull(entity.getContentType());
        Header header = entity.getContentType();
        HeaderElement[] elems = header.getElements();
        Assert.assertNotNull(elems);
        Assert.assertEquals(1, elems.length);

        HeaderElement elem = elems[0];
        Assert.assertEquals("multipart/form-data", elem.getName());
        NameValuePair p1 = elem.getParameterByName("boundary");
        Assert.assertNotNull(p1);

        String boundary = p1.getValue();
        Assert.assertNotNull(boundary);

        Assert.assertTrue(boundary.length() >= 30);
        Assert.assertTrue(boundary.length() <= 40);

        NameValuePair p2 = elem.getParameterByName("charset");
        Assert.assertNull(p2);
    }

    @Test
    public void testRepeatable() throws Exception {
        MultipartEntity entity = new MultipartEntity();
        entity.addPart("p1", new StringBody("blah blah"));
        entity.addPart("p2", new StringBody("yada yada"));
        Assert.assertTrue(entity.isRepeatable());
        Assert.assertFalse(entity.isChunked());
        Assert.assertFalse(entity.isStreaming());

        long len = entity.getContentLength();
        Assert.assertTrue(len == entity.getContentLength());

        ByteArrayOutputStream out = new ByteArrayOutputStream();
        entity.writeTo(out);
        out.close();

        byte[] bytes = out.toByteArray();
        Assert.assertNotNull(bytes);
        Assert.assertTrue(bytes.length == len);

        Assert.assertTrue(len == entity.getContentLength());

        out = new ByteArrayOutputStream();
        entity.writeTo(out);
        out.close();

        bytes = out.toByteArray();
        Assert.assertNotNull(bytes);
        Assert.assertTrue(bytes.length == len);
    }

    @Test
    public void testNonRepeatable() throws Exception {
        MultipartEntity entity = new MultipartEntity();
        entity.addPart("p1", new InputStreamBody(
                new ByteArrayInputStream("blah blah".getBytes()), null));
        entity.addPart("p2", new InputStreamBody(
                new ByteArrayInputStream("yada yada".getBytes()), null));
        Assert.assertFalse(entity.isRepeatable());
        Assert.assertTrue(entity.isChunked());
        Assert.assertTrue(entity.isStreaming());

        Assert.assertTrue(entity.getContentLength() == -1);
    }

}