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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)

describe "Array#clear" do
  it "removes all elements" do
    a = [1, 2, 3, 4]
    a.clear.should equal(a)
    a.should == []
  end

  it "returns self" do
    a = [1]
    oid = a.object_id
    a.clear.object_id.should == oid
  end

  it "leaves the Array empty" do
    a = [1]
    a.clear
    a.empty?.should == true
    a.size.should == 0
  end

  it "keeps tainted status" do
    a = [1]
    a.taint
    a.tainted?.should be_true
    a.clear
    a.tainted?.should be_true
  end

  it "does not accept any arguments" do
    lambda { [1].clear(true) }.should raise_error(ArgumentError)
  end

  ruby_version_is '1.9' do
    it "keeps untrusted status" do
      a = [1]
      a.untrust
      a.untrusted?.should be_true
      a.clear
      a.untrusted?.should be_true
    end
  end

  ruby_version_is '' ... '1.9' do
    it "raises a TypeError on a frozen array" do
      a = [1]
      a.freeze
      lambda { a.clear }.should raise_error(TypeError)
    end
  end

  ruby_version_is '1.9' do
    it "raises a RuntimeError on a frozen array" do
      a = [1]
      a.freeze
      lambda { a.clear }.should raise_error(RuntimeError)
    end
  end
end
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