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Distinct last positional argument hashes from keywords on Ruby 3 #537
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pirj
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Apr 9, 2022
pirj
reviewed
Apr 9, 2022
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| # If we don't allow the keyword splat, and the last hash contains extra keys | ||
| # then it is a positional hash. | ||
| return false if !@allows_any_kw_args && has_extra_keys |
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I guess there's a problem between 2.7 and 3.0+ with (spec/rspec/support/method_signature_verifier_spec.rb:372)
> def arity_kw(x, y = {}, z:2); end
> arity_kw(nil, {a: 1}, {z: 2})it works fine on 2.7 but fails on 3.0+:
ArgumentError: wrong number of arguments (given 3, expected 1..2)
To me, it seems that this expectation is not justified on Ruby 2.7:
expect(valid?(nil, :a => 1)).to eq(false)
as y is initialized with {:a => 1}.
I didn't look at other few failing examples yet.
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Migrated to the monorepo as rspec/rspec#120 |
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This is a solution attempt for #536
On Ruby 3 we can (with effort) distinguish between a last positional hash and a keyword hash, because the mixed behaviour we can get on other Rubies shouldn't happen.