@Test public void truncateTest() { assertThat(StringHelper.truncate("HelloBoy", 0)).isEqualTo(""); assertThat(StringHelper.truncate("HelloBoy", 1)).isEqualTo("H"); assertThat(StringHelper.truncate("HelloBoy", 2)).isEqualTo("He"); assertThat(StringHelper.truncate("HelloBoy", 3)).isEqualTo("Hel"); assertThat(StringHelper.truncate("HelloBoy", 4)).isEqualTo("Hell"); assertThat(StringHelper.truncate("HelloBoy", 5)).isEqualTo("Hello"); assertThat(StringHelper.truncate("HelloBoy", 6)).isEqualTo("HelloB"); assertThat(StringHelper.truncate("HelloBoy", 7)).isEqualTo("HelloBo"); assertThat(StringHelper.truncate("HelloBoy", 8)).isEqualTo("HelloBoy"); assertThat(StringHelper.truncate("HelloBoy", 9)).isEqualTo("HelloBoy"); assertThat(StringHelper.truncate("HelloBoy", 10)).isEqualTo("HelloBoy"); assertThat(StringHelper.truncate("HelloBoy", -1)).isEqualTo("HelloBoy"); assertThat(StringHelper.truncate("HelloBoy", -1000)).isEqualTo("HelloBoy"); }