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401b64c4e8
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
49 lines
1.2 KiB
Ruby
49 lines
1.2 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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# TODO: Move actual results to String#to_int() and spec in terms of it
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describe "String#hex" do
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it "treats leading characters of self as a string of hex digits" do
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"0a".hex.should == 10
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"0o".hex.should == 0
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"0x".hex.should == 0
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"A_BAD_BABE".hex.should == 0xABADBABE
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"0b1010".hex.should == "b1010".hex
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"0d500".hex.should == "d500".hex
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"abcdefG".hex.should == 0xabcdef
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end
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it "does not accept a sequence of underscores as part of a number" do
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"a__b".hex.should == 0xa
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"a____b".hex.should == 0xa
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"a___f".hex.should == 0xa
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end
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it "takes an optional sign" do
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"-1234".hex.should == -4660
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"+1234".hex.should == 4660
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end
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it "takes an optional 0x" do
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"0x0a".hex.should == 10
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"0a".hex.should == 10
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end
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it "requires that the sign is in front of the 0x if present" do
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"-0x1".hex.should == -1
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"0x-1".hex.should == 0
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end
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it "returns 0 on error" do
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"".hex.should == 0
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"+-5".hex.should == 0
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"wombat".hex.should == 0
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"0x0x42".hex.should == 0
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end
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it "returns 0 if sequence begins with underscore" do
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"_a".hex.should == 0
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"___b".hex.should == 0
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"___0xc".hex.should == 0
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end
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end
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