GitHubUtilTest.java

package org.arquillian.cube.docker.impl.util;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import org.junit.Test;

import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class GitHubUtilTest {

    @Test
    public void test_download_docker_machine() throws IOException {
        HttpURLConnection connection = mock(HttpURLConnection.class);
        URL url = mockUrl(connection);
        String content = "{\"id\":\"1\", \"name\":\"v0.5.5\", \"tag_name\":\"v0.5.5\"}";
        when(connection.getInputStream()).thenReturn(new ByteArrayInputStream(content.getBytes()));
        assertThat(GitHubUtil.consumeHttp(url).getTagName(), is("v0.5.5"));
    }

    private URL mockUrl(final URLConnection con) throws IOException {
        final URLStreamHandler urlHandler = new URLStreamHandler() {
            @Override protected URLConnection openConnection(URL u) throws IOException {
                return con;
            }
        };

        return new URL("http", "some-host", 0, "", urlHandler);
    }
}