Class: RSpec::Matchers::BuiltIn::Compound::NestedEvaluator Private
- Inherits:
-
Object
- Object
- RSpec::Matchers::BuiltIn::Compound::NestedEvaluator
- Defined in:
- lib/rspec/matchers/built_in/compound.rb
Overview
This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.
Normally, we evaluate the matching sequentially. For an expression like
expect(x).to foo.and bar
, this becomes:
expect(x).to foo expect(x).to bar
For block expectations, we need to nest them instead, so that
expect { x }.to foo.and bar
becomes:
expect { expect { x }.to foo }.to bar
This is necessary so that the expect
block is only executed once.
Instance Method Summary collapse
-
#initialize(actual, matcher_1, matcher_2) ⇒ NestedEvaluator
constructor
private
A new instance of NestedEvaluator.
- #matcher_matches?(matcher) ⇒ Boolean private
Constructor Details
#initialize(actual, matcher_1, matcher_2) ⇒ NestedEvaluator
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Returns a new instance of NestedEvaluator.
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# File 'lib/rspec/matchers/built_in/compound.rb', line 160 def initialize(actual, matcher_1, matcher_2) @actual = actual @matcher_1 = matcher_1 @matcher_2 = matcher_2 @match_results = {} inner, outer = order_block_matchers @match_results[outer] = outer.matches?(Proc.new do |*args| @match_results[inner] = inner.matches?(inner_matcher_block(args)) end) end |
Instance Method Details
#matcher_matches?(matcher) ⇒ Boolean
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
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# File 'lib/rspec/matchers/built_in/compound.rb', line 173 def matcher_matches?(matcher) @match_results.fetch(matcher) do raise ArgumentError, "Your #{matcher.description} has no match " \ "results, this can occur when an unexpected call stack or " \ "local jump occurs. Perhaps one of your matchers needs to " \ "declare `expects_call_stack_jump?` as `true`?" end end |