From 129c02057e50ab1c4b016ac352af65f853668986 Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 3 Oct 2004 06:02:55 +0000
Subject: add test for String#sum.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_string.rb | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 test/ruby/test_string.rb

(limited to 'test/ruby/test_string.rb')

diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
new file mode 100644
index 0000000000..0ce33fdf19
--- /dev/null
+++ b/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")
+    8.upto(70) {|bits|
+      check_sum("xyz", bits)
+    }
+  end
+end
-- 
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