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67 lines
1.7 KiB
Ruby
67 lines
1.7 KiB
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "Array#delete" do
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it "removes elements that are #== to object" do
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x = mock('delete')
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def x.==(other) 3 == other end
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a = [1, 2, 3, x, 4, 3, 5, x]
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a.delete mock('not contained')
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a.should == [1, 2, 3, x, 4, 3, 5, x]
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a.delete 3
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a.should == [1, 2, 4, 5]
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end
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it "calculates equality correctly for reference values" do
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a = ["foo", "bar", "foo", "quux", "foo"]
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a.delete "foo"
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a.should == ["bar","quux"]
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end
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it "returns object or nil if no elements match object" do
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[1, 2, 4, 5].delete(1).should == 1
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[1, 2, 4, 5].delete(3).should == nil
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end
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it "may be given a block that is executed if no element matches object" do
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[1].delete(1) {:not_found}.should == 1
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[].delete('a') {:not_found}.should == :not_found
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end
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it "returns nil if the array is empty due to a shift" do
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a = [1]
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a.shift
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a.delete(nil).should == nil
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end
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it "returns nil on a frozen array if a modification does not take place" do
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[1, 2, 3].freeze.delete(0).should == nil
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end
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it "raises a RuntimeError on a frozen array" do
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lambda { [1, 2, 3].freeze.delete(1) }.should raise_error(RuntimeError)
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end
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it "keeps tainted status" do
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a = [1, 2]
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a.taint
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a.tainted?.should be_true
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a.delete(2)
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a.tainted?.should be_true
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a.delete(1) # now empty
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a.tainted?.should be_true
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end
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it "keeps untrusted status" do
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a = [1, 2]
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a.untrust
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a.untrusted?.should be_true
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a.delete(2)
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a.untrusted?.should be_true
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a.delete(1) # now empty
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a.untrusted?.should be_true
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end
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end
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