text_helper_test.rb

# encoding: utf-8
require 'abstract_unit'

class TextHelperTest < ActionView::TestCase
  tests ActionView::Helpers::TextHelper

  def setup
    super
    # This simulates the fact that instance variables are reset every time
    # a view is rendered.  The cycle helper depends on this behavior.
    @_cycles = nil if (defined? @_cycles)
  end

  def test_concat
    self.output_buffer = 'foo'
    assert_equal 'foobar', concat('bar')
    assert_equal 'foobar', output_buffer
  end

  def test_simple_format_should_be_html_safe
    assert simple_format("<b> test with html tags </b>").html_safe?
  end

  def test_simple_format
    assert_equal "<p></p>", simple_format(nil)

    assert_equal "<p>crazy\n<br /> cross\n<br /> platform linebreaks</p>", simple_format("crazy\r\n cross\r platform linebreaks")
    assert_equal "<p>A paragraph</p>\n\n<p>and another one!</p>", simple_format("A paragraph\n\nand another one!")
    assert_equal "<p>A paragraph\n<br /> With a newline</p>", simple_format("A paragraph\n With a newline")

    text = "A\nB\nC\nD".freeze
    assert_equal "<p>A\n<br />B\n<br />C\n<br />D</p>", simple_format(text)

    text = "A\r\n  \nB\n\n\r\n\t\nC\nD".freeze
    assert_equal "<p>A\n<br />  \n<br />B</p>\n\n<p>\t\n<br />C\n<br />D</p>", simple_format(text)

    assert_equal %q(<p class="test">This is a classy test</p>), simple_format("This is a classy test", :class => 'test')
    assert_equal %Q(<p class="test">para 1</p>\n\n<p class="test">para 2</p>), simple_format("para 1\n\npara 2", :class => 'test')
  end

  def test_simple_format_should_sanitize_input_when_sanitize_option_is_not_false
    assert_equal "<p><b> test with unsafe string </b></p>", simple_format("<b> test with unsafe string </b><script>code!</script>")
  end

  def test_simple_format_should_not_sanitize_input_when_sanitize_option_is_false
    assert_equal "<p><b> test with unsafe string </b><script>code!</script></p>", simple_format("<b> test with unsafe string </b><script>code!</script>", {}, :sanitize => false)
  end

  def test_simple_format_with_custom_wrapper
    assert_equal "<div></div>", simple_format(nil, {}, :wrapper_tag => "div")
  end

  def test_simple_format_with_custom_wrapper_and_multi_line_breaks
    assert_equal "<div>We want to put a wrapper...</div>\n\n<div>...right there.</div>", simple_format("We want to put a wrapper...\n\n...right there.", {}, :wrapper_tag => "div")
  end

  def test_simple_format_should_not_change_the_text_passed
    text = "<b>Ok</b><script>code!</script>"
    text_clone = text.dup
    simple_format(text)
    assert_equal text_clone, text
  end

  def test_simple_format_does_not_modify_the_html_options_hash
    options = { :class => "foobar"}
    passed_options = options.dup
    simple_format("some text", passed_options)
    assert_equal options, passed_options
  end

  def test_simple_format_does_not_modify_the_options_hash
    options = { :wrapper_tag => :div, :sanitize => false }
    passed_options = options.dup
    simple_format("some text", {}, passed_options)
    assert_equal options, passed_options
  end

  def test_truncate
    assert_equal "Hello World!", truncate("Hello World!", :length => 12)
    assert_equal "Hello Wor...", truncate("Hello World!!", :length => 12)
  end

  def test_truncate_should_use_default_length_of_30
    str = "This is a string that will go longer then the default truncate length of 30"
    assert_equal str[0...27] + "...", truncate(str)
  end

  def test_truncate_with_options_hash
    assert_equal "This is a string that wil[...]", truncate("This is a string that will go longer then the default truncate length of 30", :omission => "[...]")
    assert_equal "Hello W...", truncate("Hello World!", :length => 10)
    assert_equal "Hello[...]", truncate("Hello World!", :omission => "[...]", :length => 10)
    assert_equal "Hello[...]", truncate("Hello Big World!", :omission => "[...]", :length => 13, :separator => ' ')
    assert_equal "Hello Big[...]", truncate("Hello Big World!", :omission => "[...]", :length => 14, :separator => ' ')
    assert_equal "Hello Big[...]", truncate("Hello Big World!", :omission => "[...]", :length => 15, :separator => ' ')
  end

  def test_truncate_multibyte
    assert_equal "\354\225\204\353\246\254\353\236\221 \354\225\204\353\246\254 ...".force_encoding('UTF-8'),
      truncate("\354\225\204\353\246\254\353\236\221 \354\225\204\353\246\254 \354\225\204\353\235\274\353\246\254\354\230\244".force_encoding('UTF-8'), :length => 10)
  end

  def test_truncate_does_not_modify_the_options_hash
    options = { :length => 10 }
    passed_options = options.dup
    truncate("some text", passed_options)
    assert_equal options, passed_options
  end

  def test_truncate_with_link_options
    assert_equal "Here's a long test and I...<a href=\"#\">Continue</a>",
    truncate("Here's a long test and I need a continue to read link", :length => 27) { link_to 'Continue', '#' }
  end

  def test_truncate_should_be_html_safe
    assert truncate("Hello World!", :length => 12).html_safe?
  end

  def test_truncate_should_escape_the_input
    assert_equal "Hello &lt;sc...", truncate("Hello <script>code!</script>World!!", :length => 12)
  end

  def test_truncate_should_not_escape_the_input_with_escape_false
    assert_equal "Hello <sc...", truncate("Hello <script>code!</script>World!!", :length => 12, :escape => false)
  end

  def test_truncate_with_escape_false_should_be_html_safe
    truncated = truncate("Hello <script>code!</script>World!!", :length => 12, :escape => false)
    assert truncated.html_safe?
  end

  def test_truncate_with_block_should_be_html_safe
    truncated = truncate("Here's a long test and I need a continue to read link", :length => 27) { link_to 'Continue', '#' }
    assert truncated.html_safe?
  end

  def test_truncate_with_block_should_escape_the_input
    assert_equal "&lt;script&gt;code!&lt;/script&gt;He...<a href=\"#\">Continue</a>",
      truncate("<script>code!</script>Here's a long test and I need a continue to read link", :length => 27) { link_to 'Continue', '#' }
  end

  def test_truncate_with_block_should_not_escape_the_input_with_escape_false
    assert_equal "<script>code!</script>He...<a href=\"#\">Continue</a>",
      truncate("<script>code!</script>Here's a long test and I need a continue to read link", :length => 27, :escape => false) { link_to 'Continue', '#' }
  end

  def test_truncate_with_block_with_escape_false_should_be_html_safe
    truncated = truncate("<script>code!</script>Here's a long test and I need a continue to read link", :length => 27, :escape => false) { link_to 'Continue', '#' }
    assert truncated.html_safe?
  end

  def test_truncate_with_block_should_escape_the_block
    assert_equal "Here's a long test and I...&lt;script&gt;alert('foo');&lt;/script&gt;",
      truncate("Here's a long test and I need a continue to read link", :length => 27) { "<script>alert('foo');</script>" }
  end

  def test_highlight_should_be_html_safe
    assert highlight("This is a beautiful morning", "beautiful").html_safe?
  end

  def test_highlight
    assert_equal(
      "This is a <mark>beautiful</mark> morning",
      highlight("This is a beautiful morning", "beautiful")
    )

    assert_equal(
      "This is a <mark>beautiful</mark> morning, but also a <mark>beautiful</mark> day",
      highlight("This is a beautiful morning, but also a beautiful day", "beautiful")
    )

    assert_equal(
      "This is a <b>beautiful</b> morning, but also a <b>beautiful</b> day",
      highlight("This is a beautiful morning, but also a beautiful day", "beautiful", :highlighter => '<b>\1</b>')
    )

    assert_equal(
      "This text is not changed because we supplied an empty phrase",
      highlight("This text is not changed because we supplied an empty phrase", nil)
    )

    assert_equal '   ', highlight('   ', 'blank text is returned verbatim')
  end

  def test_highlight_should_sanitize_input
    assert_equal(
      "This is a <mark>beautiful</mark> morning",
      highlight("This is a beautiful morning<script>code!</script>", "beautiful")
    )
  end

  def test_highlight_should_not_sanitize_if_sanitize_option_if_false
    assert_equal(
      "This is a <mark>beautiful</mark> morning<script>code!</script>",
      highlight("This is a beautiful morning<script>code!</script>", "beautiful", :sanitize => false)
    )
  end

  def test_highlight_with_regexp
    assert_equal(
      "This is a <mark>beautiful!</mark> morning",
      highlight("This is a beautiful! morning", "beautiful!")
    )

    assert_equal(
      "This is a <mark>beautiful! morning</mark>",
      highlight("This is a beautiful! morning", "beautiful! morning")
    )

    assert_equal(
      "This is a <mark>beautiful? morning</mark>",
      highlight("This is a beautiful? morning", "beautiful? morning")
    )
  end

  def test_highlight_with_multiple_phrases_in_one_pass
    assert_equal %(<em>wow</em> <em>em</em>), highlight('wow em', %w(wow em), :highlighter => '<em>\1</em>')
  end

  def test_highlight_with_html
    assert_equal(
      "<p>This is a <mark>beautiful</mark> morning, but also a <mark>beautiful</mark> day</p>",
      highlight("<p>This is a beautiful morning, but also a beautiful day</p>", "beautiful")
    )
    assert_equal(
      "<p>This is a <em><mark>beautiful</mark></em> morning, but also a <mark>beautiful</mark> day</p>",
      highlight("<p>This is a <em>beautiful</em> morning, but also a beautiful day</p>", "beautiful")
    )
    assert_equal(
      "<p>This is a <em class=\"error\"><mark>beautiful</mark></em> morning, but also a <mark>beautiful</mark> <span class=\"last\">day</span></p>",
      highlight("<p>This is a <em class=\"error\">beautiful</em> morning, but also a beautiful <span class=\"last\">day</span></p>", "beautiful")
    )
    assert_equal(
      "<p class=\"beautiful\">This is a <mark>beautiful</mark> morning, but also a <mark>beautiful</mark> day</p>",
      highlight("<p class=\"beautiful\">This is a beautiful morning, but also a beautiful day</p>", "beautiful")
    )
    assert_equal(
      "<p>This is a <mark>beautiful</mark> <a href=\"http://example.com/beautiful#top?what=beautiful%20morning&amp;when=now+then\">morning</a>, but also a <mark>beautiful</mark> day</p>",
      highlight("<p>This is a beautiful <a href=\"http://example.com/beautiful\#top?what=beautiful%20morning&when=now+then\">morning</a>, but also a beautiful day</p>", "beautiful")
    )
    assert_equal(
      "<div>abc <b>div</b></div>",
      highlight("<div>abc div</div>", "div", :highlighter => '<b>\1</b>')
    )
  end

  def test_highlight_does_not_modify_the_options_hash
    options = { :highlighter => '<b>\1</b>', :sanitize => false }
    passed_options = options.dup
    highlight("<div>abc div</div>", "div", passed_options)
    assert_equal options, passed_options
  end

  def test_excerpt
    assert_equal("...is a beautiful morn...", excerpt("This is a beautiful morning", "beautiful", :radius => 5))
    assert_equal("This is a...", excerpt("This is a beautiful morning", "this", :radius => 5))
    assert_equal("...iful morning", excerpt("This is a beautiful morning", "morning", :radius => 5))
    assert_nil excerpt("This is a beautiful morning", "day")
  end

  def test_excerpt_should_not_be_html_safe
    assert !excerpt('This is a beautiful! morning', 'beautiful', :radius => 5).html_safe?
  end

  def test_excerpt_in_borderline_cases
    assert_equal("", excerpt("", "", :radius => 0))
    assert_equal("a", excerpt("a", "a", :radius => 0))
    assert_equal("...b...", excerpt("abc", "b", :radius => 0))
    assert_equal("abc", excerpt("abc", "b", :radius => 1))
    assert_equal("abc...", excerpt("abcd", "b", :radius => 1))
    assert_equal("...abc", excerpt("zabc", "b", :radius => 1))
    assert_equal("...abc...", excerpt("zabcd", "b", :radius => 1))
    assert_equal("zabcd", excerpt("zabcd", "b", :radius => 2))

    # excerpt strips the resulting string before ap-/prepending excerpt_string.
    # whether this behavior is meaningful when excerpt_string is not to be
    # appended is questionable.
    assert_equal("zabcd", excerpt("  zabcd  ", "b", :radius => 4))
    assert_equal("...abc...", excerpt("z  abc  d", "b", :radius => 1))
  end

  def test_excerpt_with_regex
    assert_equal('...is a beautiful! mor...', excerpt('This is a beautiful! morning', 'beautiful', :radius => 5))
    assert_equal('...is a beautiful? mor...', excerpt('This is a beautiful? morning', 'beautiful', :radius => 5))
  end

  def test_excerpt_with_omission
    assert_equal("[...]is a beautiful morn[...]", excerpt("This is a beautiful morning", "beautiful", :omission => "[...]",:radius => 5))
    assert_equal(
      "This is the ultimate supercalifragilisticexpialidoceous very looooooooooooooooooong looooooooooooong beautiful morning with amazing sunshine and awesome tempera[...]",
      excerpt("This is the ultimate supercalifragilisticexpialidoceous very looooooooooooooooooong looooooooooooong beautiful morning with amazing sunshine and awesome temperatures. So what are you gonna do about it?", "very",
      :omission => "[...]")
    )
  end

  def test_excerpt_with_utf8
    assert_equal("...\357\254\203ciency could not be...".force_encoding('UTF-8'), excerpt("That's why e\357\254\203ciency could not be helped".force_encoding('UTF-8'), 'could', :radius => 8))
  end

  def test_excerpt_does_not_modify_the_options_hash
    options = { :omission => "[...]",:radius => 5 }
    passed_options = options.dup
    excerpt("This is a beautiful morning", "beautiful", passed_options)
    assert_equal options, passed_options
  end

  def test_word_wrap
    assert_equal("my very very\nvery long\nstring", word_wrap("my very very very long string", :line_width => 15))
  end

  def test_word_wrap_with_extra_newlines
    assert_equal("my very very\nvery long\nstring\n\nwith another\nline", word_wrap("my very very very long string\n\nwith another line", :line_width => 15))
  end

  def test_word_wrap_does_not_modify_the_options_hash
    options = { :line_width => 15 }
    passed_options = options.dup
    word_wrap("some text", passed_options)
    assert_equal options, passed_options
  end

  def test_pluralization
    assert_equal("1 count", pluralize(1, "count"))
    assert_equal("2 counts", pluralize(2, "count"))
    assert_equal("1 count", pluralize('1', "count"))
    assert_equal("2 counts", pluralize('2', "count"))
    assert_equal("1,066 counts", pluralize('1,066', "count"))
    assert_equal("1.25 counts", pluralize('1.25', "count"))
    assert_equal("1.0 count", pluralize('1.0', "count"))
    assert_equal("1.00 count", pluralize('1.00', "count"))
    assert_equal("2 counters", pluralize(2, "count", "counters"))
    assert_equal("0 counters", pluralize(nil, "count", "counters"))
    assert_equal("2 people", pluralize(2, "person"))
    assert_equal("10 buffaloes", pluralize(10, "buffalo"))
    assert_equal("1 berry", pluralize(1, "berry"))
    assert_equal("12 berries", pluralize(12, "berry"))
  end

  def test_cycle_class
    value = Cycle.new("one", 2, "3")
    assert_equal("one", value.to_s)
    assert_equal("2", value.to_s)
    assert_equal("3", value.to_s)
    assert_equal("one", value.to_s)
    value.reset
    assert_equal("one", value.to_s)
    assert_equal("2", value.to_s)
    assert_equal("3", value.to_s)
  end

  def test_cycle_class_with_no_arguments
    assert_raise(ArgumentError) { Cycle.new }
  end

  def test_cycle
    assert_equal("one", cycle("one", 2, "3"))
    assert_equal("2", cycle("one", 2, "3"))
    assert_equal("3", cycle("one", 2, "3"))
    assert_equal("one", cycle("one", 2, "3"))
    assert_equal("2", cycle("one", 2, "3"))
    assert_equal("3", cycle("one", 2, "3"))
  end

  def test_cycle_with_no_arguments
    assert_raise(ArgumentError) { cycle }
  end

  def test_cycle_resets_with_new_values
    assert_equal("even", cycle("even", "odd"))
    assert_equal("odd", cycle("even", "odd"))
    assert_equal("even", cycle("even", "odd"))
    assert_equal("1", cycle(1, 2, 3))
    assert_equal("2", cycle(1, 2, 3))
    assert_equal("3", cycle(1, 2, 3))
    assert_equal("1", cycle(1, 2, 3))
  end

  def test_named_cycles
    assert_equal("1", cycle(1, 2, 3, :name => "numbers"))
    assert_equal("red", cycle("red", "blue", :name => "colors"))
    assert_equal("2", cycle(1, 2, 3, :name => "numbers"))
    assert_equal("blue", cycle("red", "blue", :name => "colors"))
    assert_equal("3", cycle(1, 2, 3, :name => "numbers"))
    assert_equal("red", cycle("red", "blue", :name => "colors"))
  end

  def test_current_cycle_with_default_name
    cycle("even","odd")
    assert_equal "even", current_cycle
    cycle("even","odd")
    assert_equal "odd", current_cycle
    cycle("even","odd")
    assert_equal "even", current_cycle
  end

  def test_current_cycle_with_named_cycles
    cycle("red", "blue", :name => "colors")
    assert_equal "red", current_cycle("colors")
    cycle("red", "blue", :name => "colors")
    assert_equal "blue", current_cycle("colors")
    cycle("red", "blue", :name => "colors")
    assert_equal "red", current_cycle("colors")
  end

  def test_current_cycle_safe_call
    assert_nothing_raised { current_cycle }
    assert_nothing_raised { current_cycle("colors") }
  end

  def test_current_cycle_with_more_than_two_names
    cycle(1,2,3)
    assert_equal "1", current_cycle
    cycle(1,2,3)
    assert_equal "2", current_cycle
    cycle(1,2,3)
    assert_equal "3", current_cycle
    cycle(1,2,3)
    assert_equal "1", current_cycle
  end

  def test_default_named_cycle
    assert_equal("1", cycle(1, 2, 3))
    assert_equal("2", cycle(1, 2, 3, :name => "default"))
    assert_equal("3", cycle(1, 2, 3))
  end

  def test_reset_cycle
    assert_equal("1", cycle(1, 2, 3))
    assert_equal("2", cycle(1, 2, 3))
    reset_cycle
    assert_equal("1", cycle(1, 2, 3))
  end

  def test_reset_unknown_cycle
    reset_cycle("colors")
  end

  def test_recet_named_cycle
    assert_equal("1", cycle(1, 2, 3, :name => "numbers"))
    assert_equal("red", cycle("red", "blue", :name => "colors"))
    reset_cycle("numbers")
    assert_equal("1", cycle(1, 2, 3, :name => "numbers"))
    assert_equal("blue", cycle("red", "blue", :name => "colors"))
    assert_equal("2", cycle(1, 2, 3, :name => "numbers"))
    assert_equal("red", cycle("red", "blue", :name => "colors"))
  end

  def test_cycle_no_instance_variable_clashes
    @cycles = %w{Specialized Fuji Giant}
    assert_equal("red", cycle("red", "blue"))
    assert_equal("blue", cycle("red", "blue"))
    assert_equal("red", cycle("red", "blue"))
    assert_equal(%w{Specialized Fuji Giant}, @cycles)
  end
end