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require File.expand_path('../helper', __FILE__)
class InputTest < Test::Unit::TestCase
def test_new
# to_str
assert_equal('abc', Input.new('abc').string)
# read
selftext = ::File.read(__FILE__)
::File.open(__FILE__, 'r') do |io|
assert_equal(selftext, Input.new(io).string)
end
# to_path
path = Struct.new(:to_path).new(__FILE__)
assert_equal(selftext, Input.new(path).string)
end
def test_memoized?
assert_equal(false, Input.new('').memoized?)
end
def test_offsets_new
input = Input.new("abc\ndef\nghi")
assert_equal(0, input.line_offset)
assert_equal(0, input.line_index)
assert_equal(1, input.line_number)
assert_equal("abc\n", input.line)
end
def test_offsets_advanced
input = Input.new("abc\ndef\nghi")
input.pos = 6
assert_equal(2, input.line_offset)
assert_equal(1, input.line_index)
assert_equal(2, input.line_number)
assert_equal("def\n", input.line)
end
def test_exec
a = Rule.for('a')
b = Rule.for('b')
c = Rule.for('c')
s = Rule.for([ a, b, c ])
r = Repeat.new(s, 0, Infinity)
input = Input.new("abcabcabc")
events = input.exec(r)
expected_events = [
r,
s,
a, CLOSE, 1,
b, CLOSE, 1,
c, CLOSE, 1,
CLOSE, 3,
s,
a, CLOSE, 1,
b, CLOSE, 1,
c, CLOSE, 1,
CLOSE, 3,
s,
a, CLOSE, 1,
b, CLOSE, 1,
c, CLOSE, 1,
CLOSE, 3,
CLOSE, 9
]
assert_equal(expected_events, events)
end
def test_exec2
a = Rule.for('a')
b = Rule.for('b')
c = Choice.new([ a, b ])
r = Repeat.new(c, 0, Infinity)
s = Rule.for([ a, r ])
input = Input.new('abbababba')
events = input.exec(s)
expected_events = [
s,
a, CLOSE, 1,
r,
c,
b, CLOSE, 1,
CLOSE, 1,
c,
b, CLOSE, 1,
CLOSE, 1,
c,
a, CLOSE, 1,
CLOSE, 1,
c,
b, CLOSE, 1,
CLOSE, 1,
c,
a, CLOSE, 1,
CLOSE, 1,
c,
b, CLOSE, 1,
CLOSE, 1,
c,
b, CLOSE, 1,
CLOSE, 1,
c,
a, CLOSE, 1,
CLOSE, 1,
CLOSE, 8,
CLOSE, 9
]
assert_equal(expected_events, events)
end
end
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