Sha256: ae7786675c5dd03db1aaeb9c827c4bd0e724e3e86577591a418aefddf3d86840
Contents?: true
Size: 1.85 KB
Versions: 5
Compression:
Stored size: 1.85 KB
Contents
# frozen_string_literal: true
module Mutant
module Meta
class Example
# Example DSL
class DSL
include AST::Sexp
# Run DSL on block
#
# @param [Pathname] file
# @param [Set<Symbol>] types
#
# @return [Example]
def self.call(file, types, block)
instance = new(file, types)
instance.instance_eval(&block)
instance.example
end
private_class_method :new
# Initialize object
#
# @return [undefined]
def initialize(file, types)
@file = file
@types = types
@node = nil
@expected = []
end
# Example captured by DSL
#
# @return [Example]
#
# @raise [RuntimeError]
# in case example cannot be build
def example
fail 'source not defined' unless @node
Example.new(
file: @file,
node: @node,
types: @types,
expected: @expected
)
end
private
def source(input)
fail 'source already defined' if @node
@node = node(input)
end
def mutation(input)
node = node(input)
if @expected.include?(node)
fail "Mutation for input: #{input.inspect} is already expected"
end
@expected << node
end
def singleton_mutations
mutation('nil')
mutation('self')
end
def node(input)
case input
when String
Unparser::Preprocessor.run(Unparser.parse(input))
when ::Parser::AST::Node
input
else
fail "Cannot coerce to node: #{input.inspect}"
end
end
end # DSL
end # Example
end # Meta
end # Mutant
Version data entries
5 entries across 5 versions & 1 rubygems