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Diffstat (limited to 'spec/rubyspec/core/string/hex_spec.rb')
-rw-r--r-- | spec/rubyspec/core/string/hex_spec.rb | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/spec/rubyspec/core/string/hex_spec.rb b/spec/rubyspec/core/string/hex_spec.rb new file mode 100644 index 0000000000..8a9257c310 --- /dev/null +++ b/spec/rubyspec/core/string/hex_spec.rb @@ -0,0 +1,49 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes.rb', __FILE__) + +# TODO: Move actual results to String#to_int() and spec in terms of it +describe "String#hex" do + it "treats leading characters of self as a string of hex digits" do + "0a".hex.should == 10 + "0o".hex.should == 0 + "0x".hex.should == 0 + "A_BAD_BABE".hex.should == 0xABADBABE + "0b1010".hex.should == "b1010".hex + "0d500".hex.should == "d500".hex + "abcdefG".hex.should == 0xabcdef + end + + it "does not accept a sequence of underscores as part of a number" do + "a__b".hex.should == 0xa + "a____b".hex.should == 0xa + "a___f".hex.should == 0xa + end + + it "takes an optional sign" do + "-1234".hex.should == -4660 + "+1234".hex.should == 4660 + end + + it "takes an optional 0x" do + "0x0a".hex.should == 10 + "0a".hex.should == 10 + end + + it "requires that the sign is in front of the 0x if present" do + "-0x1".hex.should == -1 + "0x-1".hex.should == 0 + end + + it "returns 0 on error" do + "".hex.should == 0 + "+-5".hex.should == 0 + "wombat".hex.should == 0 + "0x0x42".hex.should == 0 + end + + it "returns 0 if sequence begins with underscore" do + "_a".hex.should == 0 + "___b".hex.should == 0 + "___0xc".hex.should == 0 + end +end |