@Test
public void testLanguageProfile() throws IOException {

    LanguageProfile foo = new LanguageProfile();
    assertEquals(0, foo.getCount("foo"));
    foo.add("foo");
    assertEquals(1, foo.getCount("foo"));
    foo.add("foo", 3);
    assertEquals(4, foo.getCount("foo"));
    LanguageProfile bar = new LanguageProfile();
    assertEquals(1.0, foo.distance(bar), 1e-8);
    bar.add("bar");
    assertEquals(Math.sqrt(2.0), foo.distance(bar), 1e-8);
    bar.add("bar", 3);
    assertEquals(Math.sqrt(2.0), foo.distance(bar), 1e-8);
    LanguageProfile foobar = new LanguageProfile();
    assertTrue(foo.distance(foobar) == bar.distance(foobar));
    foobar.add("foo");
    assertTrue( foo.distance(foobar) < bar.distance(foobar));
    foobar.add("bar");
    assertTrue(foo.distance(foobar) == bar.distance(foobar));
}