1 files changed, 92 insertions, 0 deletions
diff --git a/spec/ruby/core/string/crypt_spec.rb b/spec/ruby/core/string/crypt_spec.rb
new file mode 100644
index 0000000000..06f84c70a4
--- /dev/null
+++ b/spec/ruby/core/string/crypt_spec.rb
@@ -0,0 +1,92 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "String#crypt" do
+  platform_is :openbsd do
+    it "returns a cryptographic hash of self by applying the bcrypt algorithm with the specified salt" do
+      "mypassword".crypt("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu").should == "$2a$04$0WVaz0pV3jzfZ5G5tpmHWuBQGbkjzgtSc3gJbmdy0GAGMa45MFM2."
+
+      # Only uses first 72 characters of string
+      ("12345678"*9).crypt("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu").should == "$2a$04$0WVaz0pV3jzfZ5G5tpmHWukj/ORBnsMjCGpST/zCJnAypc7eAbutK"
+      ("12345678"*10).crypt("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu").should == "$2a$04$0WVaz0pV3jzfZ5G5tpmHWukj/ORBnsMjCGpST/zCJnAypc7eAbutK"
+
+      # Only uses first 29 characters of salt
+      "mypassword".crypt("$2a$04$0WVaz0pV3jzfZ5G5tpmHWuB").should == "$2a$04$0WVaz0pV3jzfZ5G5tpmHWuBQGbkjzgtSc3gJbmdy0GAGMa45MFM2."
+    end
+
+    it "raises Errno::EINVAL when the salt is shorter than 29 characters" do
+      -> { "mypassword".crypt("$2a$04$0WVaz0pV3jzfZ5G5tpmHW") }.should raise_error(Errno::EINVAL)
+    end
+
+    it "calls #to_str to converts the salt arg to a String" do
+      obj = mock('$2a$04$0WVaz0pV3jzfZ5G5tpmHWu')
+      obj.should_receive(:to_str).and_return("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu")
+
+      "mypassword".crypt(obj).should == "$2a$04$0WVaz0pV3jzfZ5G5tpmHWuBQGbkjzgtSc3gJbmdy0GAGMa45MFM2."
+    end
+
+    it "doesn't return subclass instances" do
+      StringSpecs::MyString.new("mypassword").crypt("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu").should be_an_instance_of(String)
+      "mypassword".crypt(StringSpecs::MyString.new("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu")).should be_an_instance_of(String)
+      StringSpecs::MyString.new("mypassword").crypt(StringSpecs::MyString.new("$2a$04$0WVaz0pV3jzfZ5G5tpmHWu")).should be_an_instance_of(String)
+    end
+  end
+
+  platform_is_not :openbsd do
+    # Note: MRI's documentation just says that the C stdlib function crypt() is
+    # called.
+    #
+    # I'm not sure if crypt() is guaranteed to produce the same result across
+    # different platforms. It seems that there is one standard UNIX implementation
+    # of crypt(), but that alternative implementations are possible. See
+    # http://www.unix.org.ua/orelly/networking/puis/ch08_06.htm
+    it "returns a cryptographic hash of self by applying the UNIX crypt algorithm with the specified salt" do
+      "".crypt("aa").should == "aaQSqAReePlq6"
+      "nutmeg".crypt("Mi").should == "MiqkFWCm1fNJI"
+      "ellen1".crypt("ri").should == "ri79kNd7V6.Sk"
+      "Sharon".crypt("./").should == "./UY9Q7TvYJDg"
+      "norahs".crypt("am").should == "amfIADT2iqjA."
+      "norahs".crypt("7a").should == "7azfT5tIdyh0I"
+
+      # Only uses first 8 chars of string
+      "01234567".crypt("aa").should == "aa4c4gpuvCkSE"
+      "012345678".crypt("aa").should == "aa4c4gpuvCkSE"
+      "0123456789".crypt("aa").should == "aa4c4gpuvCkSE"
+
+      # Only uses first 2 chars of salt
+      "hello world".crypt("aa").should == "aayPz4hyPS1wI"
+      "hello world".crypt("aab").should == "aayPz4hyPS1wI"
+      "hello world".crypt("aabc").should == "aayPz4hyPS1wI"
+    end
+
+    it "raises an ArgumentError when the string contains NUL character" do
+      -> { "poison\0null".crypt("aa") }.should raise_error(ArgumentError)
+    end
+
+    it "calls #to_str to converts the salt arg to a String" do
+      obj = mock('aa')
+      obj.should_receive(:to_str).and_return("aa")
+
+      "".crypt(obj).should == "aaQSqAReePlq6"
+    end
+
+    it "doesn't return subclass instances" do
+      StringSpecs::MyString.new("hello").crypt("aa").should be_an_instance_of(String)
+      "hello".crypt(StringSpecs::MyString.new("aa")).should be_an_instance_of(String)
+      StringSpecs::MyString.new("hello").crypt(StringSpecs::MyString.new("aa")).should be_an_instance_of(String)
+    end
+
+    it "raises an ArgumentError when the salt is shorter than two characters" do
+      -> { "hello".crypt("")  }.should raise_error(ArgumentError)
+      -> { "hello".crypt("f") }.should raise_error(ArgumentError)
+      -> { "hello".crypt("\x00\x00") }.should raise_error(ArgumentError)
+      -> { "hello".crypt("\x00a") }.should raise_error(ArgumentError)
+      -> { "hello".crypt("a\x00") }.should raise_error(ArgumentError)
+    end
+  end
+
+  it "raises a type error when the salt arg can't be converted to a string" do
+    -> { "".crypt(5)         }.should raise_error(TypeError)
+    -> { "".crypt(mock('x')) }.should raise_error(TypeError)
+  end
+end