free_mutant/spec/unit/mutant/subject_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

92 lines
1.9 KiB
Ruby

RSpec.describe Mutant::Subject do
let(:class_under_test) do
Class.new(described_class) do
def expression
Mutant::Expression::Namespace::Exact.new(scope_name: 'SubjectA')
end
def match_expressions
[
expression,
Mutant::Expression::Namespace::Exact.new(scope_name: 'SubjectB')
]
end
end
end
let(:object) { class_under_test.new(context, node) }
let(:node) do
Parser::CurrentRuby.parse(<<-RUBY)
def foo
end
RUBY
end
let(:location) do
double('Location', expression: expression)
end
let(:expression) do
double('Expression', line: 'source_line')
end
let(:context) do
double(
'Context',
source_path: 'source_path',
source_line: 'source_line'
)
end
describe '#identification' do
subject { object.identification }
it { should eql('SubjectA:source_path:1') }
end
describe '#source_line' do
subject { object.source_line }
it { should be(1) }
end
describe '#source_lines' do
subject { object.source_lines }
it { should eql(1..2) }
end
describe '#prepare' do
subject { object.prepare }
it_should_behave_like 'a command method'
end
describe '#node' do
subject { object.node }
it { should be(node) }
it_should_behave_like 'an idempotent method'
end
describe '#mutations' do
subject { object.mutations }
before do
expect(Mutant::Mutator).to receive(:each).with(node).and_yield(mutation_a).and_yield(mutation_b)
end
let(:mutation_a) { double('Mutation A') }
let(:mutation_b) { double('Mutation B') }
it 'generates neutral and evil mutations' do
should eql([
Mutant::Mutation::Neutral.new(object, node),
Mutant::Mutation::Evil.new(object, mutation_a),
Mutant::Mutation::Evil.new(object, mutation_b)
])
end
end
end