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separate TypeError cases on dig #172

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Merged
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Dec 12, 2015
Merged

separate TypeError cases on dig #172

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9 changes: 7 additions & 2 deletions core/hash/dig_spec.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -29,14 +29,19 @@ def obj.dig(*args); [ 42 ] end

h.dig(:foo, 0, :bar).should == [ 1 ]
h.dig(:foo, 0, :bar, 0).should == 1
lambda { h.dig(:foo, 0, :bar, 0, 0) }.should raise_error(TypeError)
h.dig(:foo, 1, 1).should == 'str'
lambda { h.dig(:foo, 1, 1, 0) }.should raise_error(TypeError)
# MRI does not recurse values returned from `obj.dig`
h.dig(:foo, 1, 0, 0).should == [ 42 ]
h.dig(:foo, 1, 0, 0, 10).should == [ 42 ]
end

it "raises TypeError if an intermediate element does not respond to #dig" do
h = {}
h[:foo] = [ { :bar => [ 1 ] }, [ nil, 'str' ] ]
lambda { h.dig(:foo, 0, :bar, 0, 0) }.should raise_error(TypeError)
lambda { h.dig(:foo, 1, 1, 0) }.should raise_error(TypeError)
end

it "calls #dig on the result of #[] with the remaining arguments" do
h = { foo: { bar: { baz: 42 } } }
h[:foo].should_receive(:dig).with(:bar, :baz).and_return(42)
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