src/third_party/closure_library/closure/goog/string/newlines_test.js

// Copyright 2013 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @fileoverview Unit tests for goog.string.
 */

goog.provide('goog.string.newlinesTest');

goog.require('goog.string.newlines');
goog.require('goog.testing.jsunit');

goog.setTestOnly('goog.string.newlinesTest');

// test for goog.string.splitLines
function testSplitLines() {

  /**
   * @param {!Array<string>} expected
   * @param {string} string
   * @param {boolean=} opt_keepNewlines
   */
  function assertSplitLines(expected, string, opt_keepNewlines) {
    var keepNewlines = opt_keepNewlines || false;
    var lines = goog.string.newlines.splitLines(string, keepNewlines);
    assertElementsEquals(expected, lines);
  }

  // Test values borrowed from Python's splitlines. http://goo.gl/iwawx
  assertSplitLines(['abc', 'def', '', 'ghi'], 'abc\ndef\n\rghi');
  assertSplitLines(['abc', 'def', '', 'ghi'], 'abc\ndef\n\r\nghi');
  assertSplitLines(['abc', 'def', 'ghi'], 'abc\ndef\r\nghi');
  assertSplitLines(['abc', 'def', 'ghi'], 'abc\ndef\r\nghi\n');
  assertSplitLines(['abc', 'def', 'ghi', ''], 'abc\ndef\r\nghi\n\r');
  assertSplitLines(['', 'abc', 'def', 'ghi', ''], '\nabc\ndef\r\nghi\n\r');
  assertSplitLines(['', 'abc', 'def', 'ghi', ''], '\nabc\ndef\r\nghi\n\r');
  assertSplitLines(['\n', 'abc\n', 'def\r\n', 'ghi\n', '\r'],
                   '\nabc\ndef\r\nghi\n\r', true);
  assertSplitLines(['', 'abc', 'def', 'ghi', ''], '\nabc\ndef\r\nghi\n\r');
  assertSplitLines(['\n', 'abc\n', 'def\r\n', 'ghi\n', '\r'],
                   '\nabc\ndef\r\nghi\n\r', true);
}

function testGetLines() {
  var lines = goog.string.newlines.getLines('abc\ndef\n\rghi');

  assertEquals(4, lines.length);

  assertEquals(0, lines[0].startLineIndex);
  assertEquals(3, lines[0].endContentIndex);
  assertEquals(4, lines[0].endLineIndex);
  assertEquals('abc', lines[0].getContent());
  assertEquals('abc\n', lines[0].getFullLine());
  assertEquals('\n', lines[0].getNewline());

  assertEquals(4, lines[1].startLineIndex);
  assertEquals(7, lines[1].endContentIndex);
  assertEquals(8, lines[1].endLineIndex);
  assertEquals('def', lines[1].getContent());
  assertEquals('def\n', lines[1].getFullLine());
  assertEquals('\n', lines[1].getNewline());

  assertEquals(8, lines[2].startLineIndex);
  assertEquals(8, lines[2].endContentIndex);
  assertEquals(9, lines[2].endLineIndex);
  assertEquals('', lines[2].getContent());
  assertEquals('\r', lines[2].getFullLine());
  assertEquals('\r', lines[2].getNewline());

  assertEquals(9, lines[3].startLineIndex);
  assertEquals(12, lines[3].endContentIndex);
  assertEquals(12, lines[3].endLineIndex);
  assertEquals('ghi', lines[3].getContent());
  assertEquals('ghi', lines[3].getFullLine());
  assertEquals('', lines[3].getNewline());
}