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require File.expand_path('../../../spec_helper', __FILE__)
with_feature :encoding do
describe "String#clear" do
before :each do
@s = "Jolene"
end
it "sets self equal to the empty String" do
@s.clear
@s.should == ""
end
it "returns self after emptying it" do
cleared = @s.clear
cleared.should == ""
cleared.object_id.should == @s.object_id
end
it "preserves its encoding" do
@s.encode!(Encoding::SHIFT_JIS)
@s.encoding.should == Encoding::SHIFT_JIS
@s.clear.encoding.should == Encoding::SHIFT_JIS
@s.encoding.should == Encoding::SHIFT_JIS
end
it "works with multibyte Strings" do
s = "\u{9765}\u{876}"
s.clear
s.should == ""
end
it "raises a RuntimeError if self is frozen" do
@s.freeze
lambda { @s.clear }.should raise_error(RuntimeError)
lambda { "".freeze.clear }.should raise_error(RuntimeError)
end
end
end
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