ParseTextUtilsTest.java

/*
 * Copyright (c) 2015-present, Parse, LLC.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
package com.parse;

import org.junit.Test;

import java.util.Arrays;
import java.util.Collections;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

public class ParseTextUtilsTest {

  //region testJoin

  @Test
  public void testJoinMultipleItems() {
    String joined = ParseTextUtils.join(",", Arrays.asList("one", "two", "three"));
    assertEquals("one,two,three", joined);
  }

  @Test
  public void testJoinSingleItem() {
    String joined = ParseTextUtils.join(",", Collections.singletonList("one"));
    assertEquals("one", joined);
  }

  //endregion

  //region testIsEmpty

  @Test
  public void testEmptyStringIsEmpty() {
    assertTrue(ParseTextUtils.isEmpty(""));
  }

  @Test
  public void testNullStringIsEmpty() {
    assertTrue(ParseTextUtils.isEmpty(null));
  }

  @Test
  public void testStringIsNotEmpty() {
    assertFalse(ParseTextUtils.isEmpty("not empty"));
  }

  //endregion

  //region testEquals

  @Test
  public void testEqualsNull() {
    assertTrue(ParseTextUtils.equals(null, null));
  }

  @Test
  public void testNotEqualsNull() {
    assertFalse(ParseTextUtils.equals("not null", null));
    assertFalse(ParseTextUtils.equals(null, "not null"));
  }

  @Test
  public void testEqualsString() {
    String same = "Hello, world!";
    assertTrue(ParseTextUtils.equals(same, same));
    assertTrue(ParseTextUtils.equals(same, same + "")); // Hack to compare different instances
  }

  @Test
  public void testNotEqualsString() {
    assertFalse(ParseTextUtils.equals("grantland", "nlutsenko"));
  }

  //endregion
}