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101 lines
2.1 KiB
Ruby
101 lines
2.1 KiB
Ruby
# frozen_string_literal: false
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require 'test/unit'
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require 'tmpdir'
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class TestWhileuntil < Test::Unit::TestCase
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def test_while
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Dir.mktmpdir("ruby_while_tmp") {|tmpdir|
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tmpfilename = "#{tmpdir}/ruby_while_tmp.#{$$}"
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tmp = open(tmpfilename, "w")
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tmp.print "tvi925\n";
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tmp.print "tvi920\n";
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tmp.print "vt100\n";
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tmp.print "Amiga\n";
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tmp.print "paper\n";
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tmp.close
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tmp = open(tmpfilename, "r")
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assert_instance_of(File, tmp)
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while line = tmp.gets()
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break if /vt100/ =~ line
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end
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assert_not_predicate(tmp, :eof?)
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assert_match(/vt100/, line)
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tmp.close
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tmp = open(tmpfilename, "r")
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while line = tmp.gets()
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next if /vt100/ =~ line
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assert_no_match(/vt100/, line)
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end
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assert_predicate(tmp, :eof?)
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assert_no_match(/vt100/, line)
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tmp.close
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tmp = open(tmpfilename, "r")
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while line = tmp.gets()
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lastline = line
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line = line.gsub(/vt100/, 'VT100')
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if lastline != line
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line.gsub!('VT100', 'Vt100')
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redo
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end
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assert_no_match(/vt100/, line)
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assert_no_match(/VT100/, line)
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end
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assert_predicate(tmp, :eof?)
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tmp.close
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sum=0
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for i in 1..10
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sum += i
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i -= 1
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if i > 0
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redo
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end
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end
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assert_equal(220, sum)
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tmp = open(tmpfilename, "r")
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while line = tmp.gets()
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break if $. == 3
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assert_no_match(/vt100/, line)
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assert_no_match(/Amiga/, line)
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assert_no_match(/paper/, line)
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end
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tmp.close
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File.unlink tmpfilename or `/bin/rm -f "#{tmpfilename}"`
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assert_file.not_exist?(tmpfilename)
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}
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end
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def test_begin_while
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i = 0
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sum = 0
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begin
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i += 1
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sum += i
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end while i < 10
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assert_equal([10, 55], [i, sum])
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i = 0
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sum = 0
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(
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i += 1
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sum += i
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) while false
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assert_equal([0, 0], [i, sum])
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end
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def test_until
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i = 0
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until i>4
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i+=1
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end
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assert_operator(i, :>, 4)
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end
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end
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