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29 lines
643 B
Ruby
29 lines
643 B
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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require 'strscan'
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describe "StringScanner#match?" do
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before :each do
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@s = StringScanner.new("This is a test")
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end
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it "returns the length of the match and the scan pointer is not advanced" do
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@s.match?(/\w+/).should == 4
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@s.match?(/\w+/).should == 4
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@s.pos.should == 0
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end
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it "returns nil if there's no match" do
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@s.match?(/\d+/).should == nil
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@s.match?(/\s+/).should == nil
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end
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it "effects pre_match" do
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@s.scan(/\w+/)
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@s.scan(/\s/)
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@s.pre_match.should == "This"
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@s.match?(/\w+/)
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@s.pre_match.should == "This "
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end
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end
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