48 lines
966 B
Ruby
48 lines
966 B
Ruby
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module Mutant
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class Mutator
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class Node
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# Mutator for case nodes
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class Case < self
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handle(:case)
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CONDITION_INDEX = 0
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private
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# Emit mutations
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#
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# @return [undefined]
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#
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# @api private
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#
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def dispatch
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mutate_child(CONDITION_INDEX)
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emit_branch_mutations
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end
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# Emit presence mutations
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#
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# @return [undefined]
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#
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# @api private
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#
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def emit_branch_mutations
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children.each_with_index.drop(1).each do |child, index|
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next unless child
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mutate_child(index)
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dup_children = children.dup
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dup_children.delete_at(index)
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if dup_children.last.type == :when
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dup_children << nil
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end
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emit_self(*dup_children)
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end
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end
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end # Case
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end # Node
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end # Mutator
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end # Mutant
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