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gem 'minitest' # minitest in 1.9 stdlib is crufty
require 'minitest/autorun'
require 'mime'
class TextFlowedTest < Minitest::Test
include MIME::ContentFormats
def test_empty_string
assert_equal '', TextFlowed.encode('')
end
def test_single_word_will_not_break_regardless_of_line_length
txt = "1234567890"
assert_equal txt, TextFlowed.encode(txt, 9) # <
assert_equal txt, TextFlowed.encode(txt, 10) # =
assert_equal txt, TextFlowed.encode(txt, 11) # >
end
def test_max_line_length_around_first_word
txt = "1234567890 A"
expected1 = "1234567890\r\nA"
expected2 = "1234567890 \r\nA"
assert_equal expected1, TextFlowed.encode(txt, 9) # <
assert_equal expected1, TextFlowed.encode(txt, 10) # =
assert_equal expected2, TextFlowed.encode(txt, 11) # >
end
def test_words_with_variable_spacing
txt = "123 456 789"
expected1 = "123 \r\n456 \r\n789"
expected2 = "123 456 \r\n789"
expected3 = "123 456 \r\n789"
expected4 = "123 456 \r\n789"
expected5 = txt
assert_equal expected1, TextFlowed.encode(txt, 8)
assert_equal expected2, TextFlowed.encode(txt, 9)
assert_equal expected3, TextFlowed.encode(txt, 10)
assert_equal expected4, TextFlowed.encode(txt, 11)
assert_equal expected4, TextFlowed.encode(txt, 12)
assert_equal expected4, TextFlowed.encode(txt, 13)
assert_equal expected5, TextFlowed.encode(txt, 14)
assert_equal expected5, TextFlowed.encode(txt, 15)
end
def test_paragraphs_with_variable_lengths
txt = "123 456 789\n\none two three\n\nEND"
expected1 = "123 \r\n456 \r\n789\r\n\r\none \r\ntwo \r\nthree\r\n\r\nEND"
expected2 = "123 456 \r\n789\r\n\r\none two \r\nthree\r\n\r\nEND"
expected3 = "123 456 789\r\n\r\none two \r\nthree\r\n\r\nEND"
expected4 = "123 456 789\r\n\r\none two three\r\n\r\nEND"
assert_equal expected1, TextFlowed.encode(txt, 4)
assert_equal expected2, TextFlowed.encode(txt, 10)
assert_equal expected3, TextFlowed.encode(txt, 11)
assert_equal expected3, TextFlowed.encode(txt, 12)
assert_equal expected4, TextFlowed.encode(txt, 13)
assert_equal expected4, TextFlowed.encode(txt, 14)
assert_equal expected4, TextFlowed.encode(txt, txt.length)
assert_equal expected4, TextFlowed.encode(txt, txt.length+1)
end
def test_trailing_newlines_removed
txt = "123 456 789\r\nabc def ghi"
assert_equal txt, TextFlowed.encode(txt+"\n", 11)
assert_equal txt, TextFlowed.encode(txt+"\r\n", 11)
end
def test_tab_expansion
txt = "123\t456"
expected1 = "123\r\n456"
expected2 = "123 \r\n456"
expected3 = "123 \r\n456"
expected4 = "123 \r\n456"
expected5 = "123 \r\n456"
expected6 = "123 456"
assert_equal expected1, TextFlowed.encode(txt, 2)
assert_equal expected1, TextFlowed.encode(txt, 3)
assert_equal expected2, TextFlowed.encode(txt, 4)
assert_equal expected3, TextFlowed.encode(txt, 5)
assert_equal expected4, TextFlowed.encode(txt, 6)
assert_equal expected5, TextFlowed.encode(txt, 7)
assert_equal expected5, TextFlowed.encode(txt, 8)
assert_equal expected5, TextFlowed.encode(txt, 9)
assert_equal expected6, TextFlowed.encode(txt, 10)
end
def test_spacing_after_hard_line_break
txt = "123\r\n\r\n abc"
exp = "123\r\n\r\nabc"
assert_equal exp, TextFlowed.encode(txt, 4) # remove SP if line > max
assert_equal txt, TextFlowed.encode(txt, 5) # preserve SP if line == max
assert_equal txt, TextFlowed.encode(txt, 6) # preserve SP if line < max
end
def test_trim_spaces_before_hard_line_breaks
txt1 = "123 \r\n\r\n456"
txt2 = "123 \r\n\r\n456 "
expected = "123\r\n\r\n456"
assert_equal expected, TextFlowed.encode(txt1, 3)
assert_equal expected, TextFlowed.encode(txt1, 4)
assert_equal expected, TextFlowed.encode(txt1, 5)
assert_equal expected, TextFlowed.encode(txt2, 3)
assert_equal expected, TextFlowed.encode(txt2, 4)
assert_equal expected, TextFlowed.encode(txt2, 5)
end
def test_trim_trailing_spaces
txt = "123 456 "
expected = "123 \r\n456"
assert_equal expected, TextFlowed.encode(txt, 4)
end
def test_rfc_79_character_max_flowed_line_length
assert_equal (max = 79), TextFlowed::MAX_FLOWED_LINE
TextFlowed.encode('', max) # no error
assert_raises(ArgumentError) { TextFlowed.encode('', max+1) }
end
def test_rfc_max_smtp_line_length_boundary
long_word = 'x' * MIME::MAX_LINE_LENGTH
txt1 = long_word
txt2 = 'x' + long_word
txt3 = 'x ' + long_word
txt4 = 'x ' + long_word + ' x'
expected1 = long_word
expected2 = long_word + "\r\nx"
expected3 = "x \r\n" + long_word
expected4 = "x \r\n" + long_word + "\r\nx"
assert_equal expected1, TextFlowed.encode(txt1)
assert_equal expected2, TextFlowed.encode(txt2)
assert_equal expected3, TextFlowed.encode(txt3)
assert_equal expected4, TextFlowed.encode(txt4)
end
end
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