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require_relative '../spec_helper'
with_feature :readline do
describe "Readline::HISTORY.delete_at" do
it "deletes and returns the history entry at the specified index" do
Readline::HISTORY.push("1", "2", "3")
Readline::HISTORY.delete_at(1).should == "2"
Readline::HISTORY.size.should == 2
Readline::HISTORY.delete_at(1).should == "3"
Readline::HISTORY.size.should == 1
Readline::HISTORY.delete_at(0).should == "1"
Readline::HISTORY.size.should == 0
Readline::HISTORY.push("1", "2", "3", "4")
Readline::HISTORY.delete_at(-2).should == "3"
Readline::HISTORY.size.should == 3
Readline::HISTORY.delete_at(-2).should == "2"
Readline::HISTORY.size.should == 2
Readline::HISTORY.delete_at(0).should == "1"
Readline::HISTORY.size.should == 1
Readline::HISTORY.delete_at(0).should == "4"
Readline::HISTORY.size.should == 0
end
it "raises an IndexError when the given index is greater than the history size" do
-> { Readline::HISTORY.delete_at(10) }.should raise_error(IndexError)
-> { Readline::HISTORY.delete_at(-10) }.should raise_error(IndexError)
end
ruby_version_is ''...'2.7' do
it "taints the returned strings" do
Readline::HISTORY.push("1", "2", "3")
Readline::HISTORY.delete_at(0).tainted?.should be_true
Readline::HISTORY.delete_at(0).tainted?.should be_true
Readline::HISTORY.delete_at(0).tainted?.should be_true
end
end
end
end
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