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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | 95e8c48dd3348503a8c7db5d0498894a1b676395 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/rubyspec/library/zlib/adler32_spec.rb | |
parent | ed7d803500de38186c74bce94d233e85ef51e503 (diff) | |
download | ruby-95e8c48dd3348503a8c7db5d0498894a1b676395.tar.gz |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/rubyspec/library/zlib/adler32_spec.rb')
-rw-r--r-- | spec/rubyspec/library/zlib/adler32_spec.rb | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/spec/rubyspec/library/zlib/adler32_spec.rb b/spec/rubyspec/library/zlib/adler32_spec.rb new file mode 100644 index 0000000000..1767dc2011 --- /dev/null +++ b/spec/rubyspec/library/zlib/adler32_spec.rb @@ -0,0 +1,46 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'zlib' + +describe "Zlib.adler32" do + it "calculates Adler checksum for string" do + Zlib.adler32("").should == 1 + Zlib.adler32(" ").should == 2162721 + Zlib.adler32("123456789").should == 152961502 + Zlib.adler32("!@#\{$\}%^&**()").should == 365495023 + Zlib.adler32("to be or not to be" * 22).should == 3979904837 + Zlib.adler32("0").should == 3211313 + Zlib.adler32((2**32).to_s).should == 193331739 + Zlib.adler32((2**64).to_s).should == 723452953 + end + + it "calculates Adler checksum for string and initial Adler value" do + test_string = "This is a test string! How exciting!%?" + Zlib.adler32(test_string, 0).should == 63900955 + Zlib.adler32(test_string, 1).should == 66391324 + Zlib.adler32(test_string, 2**8).should == 701435419 + Zlib.adler32(test_string, 2**16).should == 63966491 + lambda { Zlib.adler32(test_string, 2**128) }.should raise_error(RangeError) + end + + it "calculates the Adler checksum for string and initial Adler value for Bignums" do + test_string = "This is a test string! How exciting!%?" + Zlib.adler32(test_string, 2**30).should == 1137642779 + end + + it "assumes that the initial value is given to adler, if adler is omitted" do + orig_crc = Zlib.adler32 + Zlib.adler32("").should == Zlib.adler32("", orig_crc) + Zlib.adler32(" ").should == Zlib.adler32(" ", orig_crc) + Zlib.adler32("123456789").should == Zlib.adler32("123456789", orig_crc) + Zlib.adler32("!@#\{$\}%^&**()").should == Zlib.adler32("!@#\{$\}%^&**()", orig_crc) + Zlib.adler32("to be or not to be" * 22).should == Zlib.adler32("to be or not to be" * 22, orig_crc) + Zlib.adler32("0").should == Zlib.adler32("0", orig_crc) + Zlib.adler32((2**32).to_s).should == Zlib.adler32((2**32).to_s, orig_crc) + Zlib.adler32((2**64).to_s).should == Zlib.adler32((2**64).to_s, orig_crc) + end + + it "it returns the CRC initial value, if string is omitted" do + Zlib.adler32.should == 1 + end + +end |