free_mutant/spec/unit/mutant/expression_spec.rb
Markus Schirp d647563055 Refactor expression parsing and representation
* Avoids boot time mutation of REGISTER constant
* Allows to define project specific expression parsing
* Avoids custom (slow) serialization of Expression objects speeding up
  reporter / killer IPC
* Improve specification
* Improve integration API as it now finally references an object the config
* Allow reproduction of syntax from Expression#syntax
* Allow instantiation of Expresssion objects without generating the
  syntax, much nicer for most specs & internal code, avoids generating
  a string to parse it into an expression
* Fix LSP violation in Mutant::Matcher namespace
2015-06-21 14:44:33 +00:00

47 lines
969 B
Ruby

RSpec.describe Mutant::Expression do
let(:object) { described_class }
let(:parser) { Mutant::Config::DEFAULT.expression_parser }
describe '#prefix?' do
let(:object) { parser.call('Foo*') }
subject { object.prefix?(other) }
context 'when object is a prefix of other' do
let(:other) { parser.call('Foo::Bar') }
it { should be(true) }
end
context 'when other is not a prefix of other' do
let(:other) { parser.call('Bar') }
it { should be(false) }
end
end
describe '.try_parse' do
let(:object) do
Class.new(described_class) do
include Anima.new(:foo)
const_set(:REGEXP, /(?<foo>foo)/)
end
end
subject { object.try_parse(input) }
context 'on succesful parse' do
let(:input) { 'foo' }
it { should eql(object.new(foo: 'foo')) }
end
context 'on unsuccesful parse' do
let(:input) { 'bar' }
it { should be(nil) }
end
end
end