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describe :strscan_pos, shared: true do
before :each do
@s = StringScanner.new("This is a test")
end
it "returns the position of the scan pointer" do
@s.send(@method).should == 0
@s.scan_until(/This is/)
@s.send(@method).should == 7
@s.get_byte
@s.send(@method).should == 8
@s.terminate
@s.send(@method).should == 14
end
it "returns 0 in the reset position" do
@s.reset
@s.send(@method).should == 0
end
it "returns the length of the string in the terminate position" do
@s.terminate
@s.send(@method).should == @s.string.length
end
end
describe :strscan_pos_set, shared: true do
before :each do
@s = StringScanner.new("This is a test")
end
it "modify the scan pointer" do
@s.send(@method, 5)
@s.rest.should == "is a test"
end
it "positions from the end if the argument is negative" do
@s.send(@method, -2)
@s.rest.should == "st"
@s.pos.should == 12
end
it "raises a RangeError if position too far backward" do
lambda {
@s.send(@method, -20)
}.should raise_error(RangeError)
end
it "raises a RangeError when the passed argument is out of range" do
lambda { @s.send(@method, 20) }.should raise_error(RangeError)
end
end
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