Tests on Uri query parameters

UriTest.java

import android.net.Uri;
import android.test.InstrumentationTestCase;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class UriTest extends InstrumentationTestCase {

    public void testQueryParameters() throws UnsupportedEncodingException {
        Uri uri = Uri.parse("http://domain.com/test?single_value=1");
        assertTrue(uri.getQueryParameterNames().contains("single_value"));

        uri = Uri.parse("http://domain.com/test?array_value=1,2,3");
        assertTrue(uri.getQueryParameterNames().contains("array_value"));
        assertEquals("1,2,3", uri.getQueryParameter("array_value"));
        assertEquals(1, uri.getQueryParameters("array_value").size());

        uri = Uri.parse("http://domain.com/test?array_value=1&array_value=2");
        assertTrue(uri.getQueryParameterNames().contains("array_value"));
        assertEquals("1", uri.getQueryParameter("array_value"));
        assertEquals(2, uri.getQueryParameters("array_value").size());
        assertEquals("1", uri.getQueryParameters("array_value").get(0));

        String arrayKey = "array_value[]";

        uri = Uri.parse("http://domain.com/test?" + arrayKey + "=1,2,3");
        assertTrue(uri.getQueryParameterNames().contains("array_value[]"));
        assertFalse(uri.getQueryParameterNames().contains("array_value"));
        assertEquals(null, uri.getQueryParameter("array_value[]"));
        assertEquals(null, uri.getQueryParameter("array_value"));
        assertEquals(0, uri.getQueryParameters("array_value[]").size());
        assertEquals(0, uri.getQueryParameters("array_value").size());

        uri = Uri.parse("http://domain.com/test?" + arrayKey + "=1&" + arrayKey + "=2");
        assertTrue(uri.getQueryParameterNames().contains("array_value[]"));
        assertFalse(uri.getQueryParameterNames().contains("array_value"));
        assertEquals(null, uri.getQueryParameter("array_value"));
        assertEquals(0, uri.getQueryParameters("array_value").size());
        assertEquals(0, uri.getQueryParameters("array_value[]").size());

        arrayKey = URLEncoder.encode("array_value[]", "UTF-8");

        uri = Uri.parse("http://domain.com/test?" + arrayKey + "=1,2,3");
        assertTrue(uri.getQueryParameterNames().contains("array_value[]"));
        assertFalse(uri.getQueryParameterNames().contains("array_value"));
        assertEquals("1,2,3", uri.getQueryParameter("array_value[]"));
        assertEquals(null, uri.getQueryParameter("array_value"));
        assertEquals(1, uri.getQueryParameters("array_value[]").size());
        assertEquals(0, uri.getQueryParameters("array_value").size());

        uri = Uri.parse("http://domain.com/test?" + arrayKey + "=1&" + arrayKey + "=2");
        assertTrue(uri.getQueryParameterNames().contains("array_value[]"));
        assertFalse(uri.getQueryParameterNames().contains("array_value"));
        assertEquals(null, uri.getQueryParameter("array_value"));
        assertEquals(0, uri.getQueryParameters("array_value").size());
        assertEquals(2, uri.getQueryParameters("array_value[]").size());
        assertEquals("1", uri.getQueryParameters("array_value[]").get(0));

    }
}