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78 lines
2 KiB
Ruby
78 lines
2 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#compact" do
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it "returns a copy of array with all nil elements removed" do
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a = [1, 2, 4]
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a.compact.should == [1, 2, 4]
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a = [1, nil, 2, 4]
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a.compact.should == [1, 2, 4]
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a = [1, 2, 4, nil]
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a.compact.should == [1, 2, 4]
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a = [nil, 1, 2, 4]
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a.compact.should == [1, 2, 4]
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end
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it "does not return self" do
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a = [1, 2, 3]
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a.compact.should_not equal(a)
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end
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it "does not return subclass instance for Array subclasses" do
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ArraySpecs::MyArray[1, 2, 3, nil].compact.should be_an_instance_of(Array)
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end
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it "does not keep tainted status even if all elements are removed" do
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a = [nil, nil]
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a.taint
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a.compact.tainted?.should be_false
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end
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it "does not keep untrusted status even if all elements are removed" do
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a = [nil, nil]
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a.untrust
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a.compact.untrusted?.should be_false
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end
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end
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describe "Array#compact!" do
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it "removes all nil elements" do
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a = ['a', nil, 'b', false, 'c']
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a.compact!.should equal(a)
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a.should == ["a", "b", false, "c"]
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a = [nil, 'a', 'b', false, 'c']
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a.compact!.should equal(a)
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a.should == ["a", "b", false, "c"]
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a = ['a', 'b', false, 'c', nil]
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a.compact!.should equal(a)
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a.should == ["a", "b", false, "c"]
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end
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it "returns self if some nil elements are removed" do
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a = ['a', nil, 'b', false, 'c']
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a.compact!.object_id.should == a.object_id
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end
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it "returns nil if there are no nil elements to remove" do
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[1, 2, false, 3].compact!.should == nil
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end
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it "keeps tainted status even if all elements are removed" do
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a = [nil, nil]
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a.taint
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a.compact!
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a.tainted?.should be_true
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end
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it "keeps untrusted status even if all elements are removed" do
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a = [nil, nil]
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a.untrust
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a.compact!
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a.untrusted?.should be_true
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end
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it "raises a RuntimeError on a frozen array" do
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lambda { ArraySpecs.frozen_array.compact! }.should raise_error(RuntimeError)
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end
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end
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