diff options
Diffstat (limited to 'ruby_1_8_5/test/ruby/test_string.rb')
-rw-r--r-- | ruby_1_8_5/test/ruby/test_string.rb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ruby_1_8_5/test/ruby/test_string.rb b/ruby_1_8_5/test/ruby/test_string.rb new file mode 100644 index 0000000000..f8938cad84 --- /dev/null +++ b/ruby_1_8_5/test/ruby/test_string.rb @@ -0,0 +1,19 @@ +require 'test/unit' + +class TestString < Test::Unit::TestCase + def check_sum(str, bits=16) + sum = 0 + str.each_byte {|c| sum += c} + sum = sum & ((1 << bits) - 1) if bits != 0 + assert_equal(sum, str.sum(bits)) + end + def test_sum + assert_equal(0, "".sum) + assert_equal(294, "abc".sum) + check_sum("abc") + check_sum("\x80") + 0.upto(70) {|bits| + check_sum("xyz", bits) + } + end +end |