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Pass method call directly to inner value #7

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Pass method call directly to inner value #7

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16 changes: 16 additions & 0 deletions lib/possibly.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,18 @@ def ==(other)

# Represents a non-empty value
class Some < Maybe

class SomeInnerValue

def initialize(value)
@value = value
end

def method_missing(method_sym, *args, &block)
Maybe(@value.send(method_sym, *args, &block))
end
end

def initialize(value)
@value = value
end
Expand Down Expand Up @@ -54,6 +66,10 @@ def method_missing(method_sym, *args, &block)
map { |value| value.send(method_sym, *args, &block) }
end

def inner
SomeInnerValue.new(@value)
end

private

def __enumerable_value
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8 changes: 8 additions & 0 deletions spec/spec.rb
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Expand Up @@ -156,4 +156,12 @@ def test_case_when(case_value, match_value, non_match_value)
expect(Some([1, 2, 3]).map { |arr| arr.map { |v| v * v } }.get).to eql([1, 4, 9])
end
end

describe "inner" do
it "forwards all (also Enumerable) methods" do
expect(Some(["first", "second", "third"]).inner.first.upcase.or_else { false }).to eql("FIRST")
expect(Some(["first", "second", "third"]).inner.map(&:upcase).or_else { false }).to eql(["FIRST", "SECOND", "THIRD"])
expect(Some([]).inner.first.upcase.or_else { "NONE" }).to eql("NONE")
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Add test for None (it will probably break)

end
end
end