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49 lines
1.3 KiB
Ruby
49 lines
1.3 KiB
Ruby
class ArraySpec_19_Mock1 < Java::Lang::Object
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def to_a
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[2, 3, 4]
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end
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end
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describe "Array literals" do
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it "[] accepts a literal hash without curly braces as its last parameter" do
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["foo", "bar" => :baz].should == ["foo", {"bar" => :baz}]
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[1, 2, 3 => 6, 4 => 24].should == [1, 2, {3 => 6, 4 => 24}]
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end
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it "[] treats splatted nil as no element" do
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[*nil].should == []
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[1, *nil].should == [1]
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[1, 2, *nil].should == [1, 2]
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[1, *nil, 3].should == [1, 3]
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[*nil, *nil, *nil].should == []
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end
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end
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describe "The unpacking splat operator (*)" do
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it "when applied to a non-Array value attempts to coerce it to Array if the object respond_to?(:to_a)" do
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=begin
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obj = mock("pseudo-array")
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obj.should_receive(:to_a).and_return([2, 3, 4])
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=end
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obj = ArraySpec_19_Mock1.new
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[1, *obj].should == [1, 2, 3, 4]
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end
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it "when applied to a non-Array value uses it unchanged if it does not respond_to?(:to_a)" do
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obj = Object.new
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obj.should_not respond_to(:to_a)
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[1, *obj].should == [1, obj]
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end
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it "can be used before other non-splat elements" do
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a = [1, 2]
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[0, *a, 3].should == [0, 1, 2, 3]
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end
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it "can be used multiple times in the same containing array" do
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a = [1, 2]
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b = [1, 0]
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[*a, 3, *a, *b].should == [1, 2, 3, 1, 2, 1, 0]
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end
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end
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