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9dc121cc57
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63768 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
60 lines
1.5 KiB
Ruby
60 lines
1.5 KiB
Ruby
require_relative '../../spec_helper'
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require 'strscan'
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describe "StringScanner#[]" do
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before :each do
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@s = StringScanner.new("Fri Jun 13 2008 22:43")
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end
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it "returns nil if there is no current match" do
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@s[0].should be_nil
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end
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it "returns the n-th subgroup in the most recent match" do
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@s.scan(/(\w+) (\w+) (\d+) /)
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@s[0].should == "Fri Jun 13 "
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@s[1].should == "Fri"
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@s[2].should == "Jun"
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@s[3].should == "13"
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@s[-3].should == "Fri"
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@s[-2].should == "Jun"
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@s[-1].should == "13"
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end
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it "returns nil if index is outside of self" do
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@s.scan(/(\w+) (\w+) (\d+) /)
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@s[5].should == nil
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@s[-5].should == nil
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end
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it "calls to_int on the given index" do
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@s.scan(/(\w+) (\w+) (\d+) /)
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@s[0.5].should == "Fri Jun 13 "
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end
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it "raises a TypeError if the given index is nil" do
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@s.scan(/(\w+) (\w+) (\d+) /)
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lambda { @s[nil]}.should raise_error(TypeError)
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end
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it "raises a TypeError when a Range is as argument" do
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@s.scan(/(\w+) (\w+) (\d+) /)
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lambda { @s[0..2]}.should raise_error(TypeError)
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end
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it "raises a IndexError when there's no named capture" do
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@s.scan(/(\w+) (\w+) (\d+) /)
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lambda { @s["wday"]}.should raise_error(IndexError)
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lambda { @s[:wday]}.should raise_error(IndexError)
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end
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it "returns named capture" do
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@s.scan(/(?<wday>\w+) (?<month>\w+) (?<day>\d+) /)
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@s["wday"].should == "Fri"
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@s["month"].should == "Jun"
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@s["day"].should == "13"
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@s[:wday].should == "Fri"
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@s[:month].should == "Jun"
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@s[:day].should == "13"
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end
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end
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