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130 lines
3.4 KiB
Ruby
130 lines
3.4 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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describe "Array#concat" do
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it "returns the array itself" do
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ary = [1,2,3]
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ary.concat([4,5,6]).equal?(ary).should be_true
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end
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it "appends the elements in the other array" do
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ary = [1, 2, 3]
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ary.concat([9, 10, 11]).should equal(ary)
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ary.should == [1, 2, 3, 9, 10, 11]
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ary.concat([])
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ary.should == [1, 2, 3, 9, 10, 11]
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end
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it "does not loop endlessly when argument is self" do
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ary = ["x", "y"]
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ary.concat(ary).should == ["x", "y", "x", "y"]
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end
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it "tries to convert the passed argument to an Array using #to_ary" do
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obj = mock('to_ary')
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obj.should_receive(:to_ary).and_return(["x", "y"])
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[4, 5, 6].concat(obj).should == [4, 5, 6, "x", "y"]
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end
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it "does not call #to_ary on Array subclasses" do
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obj = ArraySpecs::ToAryArray[5, 6, 7]
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obj.should_not_receive(:to_ary)
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[].concat(obj).should == [5, 6, 7]
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end
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it "raises a #{frozen_error_class} when Array is frozen and modification occurs" do
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lambda { ArraySpecs.frozen_array.concat [1] }.should raise_error(frozen_error_class)
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end
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# see [ruby-core:23666]
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it "raises a #{frozen_error_class} when Array is frozen and no modification occurs" do
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lambda { ArraySpecs.frozen_array.concat([]) }.should raise_error(frozen_error_class)
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end
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it "keeps tainted status" do
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ary = [1, 2]
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ary.taint
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ary.concat([3])
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ary.tainted?.should be_true
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ary.concat([])
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ary.tainted?.should be_true
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end
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it "is not infected by the other" do
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ary = [1,2]
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other = [3]; other.taint
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ary.tainted?.should be_false
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ary.concat(other)
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ary.tainted?.should be_false
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end
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it "keeps the tainted status of elements" do
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ary = [ Object.new, Object.new, Object.new ]
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ary.each {|x| x.taint }
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ary.concat([ Object.new ])
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ary[0].tainted?.should be_true
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ary[1].tainted?.should be_true
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ary[2].tainted?.should be_true
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ary[3].tainted?.should be_false
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end
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it "keeps untrusted status" do
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ary = [1, 2]
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ary.untrust
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ary.concat([3])
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ary.untrusted?.should be_true
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ary.concat([])
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ary.untrusted?.should be_true
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end
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it "is not infected untrustedness by the other" do
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ary = [1,2]
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other = [3]; other.untrust
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ary.untrusted?.should be_false
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ary.concat(other)
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ary.untrusted?.should be_false
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end
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it "keeps the untrusted status of elements" do
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ary = [ Object.new, Object.new, Object.new ]
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ary.each {|x| x.untrust }
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ary.concat([ Object.new ])
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ary[0].untrusted?.should be_true
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ary[1].untrusted?.should be_true
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ary[2].untrusted?.should be_true
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ary[3].untrusted?.should be_false
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end
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it "appends elements to an Array with enough capacity that has been shifted" do
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ary = [1, 2, 3, 4, 5]
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2.times { ary.shift }
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2.times { ary.pop }
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ary.concat([5, 6]).should == [3, 5, 6]
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end
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it "appends elements to an Array without enough capacity that has been shifted" do
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ary = [1, 2, 3, 4]
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3.times { ary.shift }
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ary.concat([5, 6]).should == [4, 5, 6]
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end
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it "takes multiple arguments" do
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ary = [1, 2]
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ary.concat [3, 4]
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ary.should == [1, 2, 3, 4]
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end
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it "concatenates the initial value when given arguments contain 2 self" do
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ary = [1, 2]
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ary.concat ary, ary
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ary.should == [1, 2, 1, 2, 1, 2]
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end
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it "returns self when given no arguments" do
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ary = [1, 2]
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ary.concat.should equal(ary)
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ary.should == [1, 2]
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end
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end
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