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Contents
require 'support/doubled_classes'
module RSpec
module Mocks
RSpec.describe 'Constructing a verifying double' do
describe 'instance doubles' do
it 'cannot be constructed with a non-module object' do
expect {
instance_double(Object.new)
}.to raise_error(/Module or String expected/)
end
it 'can be constructed with a struct' do
o = instance_double(Struct.new(:defined_method), :defined_method => 1)
expect(o.defined_method).to eq(1)
end
end
describe 'class doubles' do
it 'cannot be constructed with a non-module object' do
expect {
class_double(Object.new)
}.to raise_error(/Module or String expected/)
end
end
describe 'when verify_doubled_constant_names config option is set' do
include_context "with isolated configuration"
before do
RSpec::Mocks.configuration.verify_doubled_constant_names = true
end
it 'prevents creation of instance doubles for unloaded constants' do
expect {
instance_double('LoadedClas')
}.to raise_error(VerifyingDoubleNotDefinedError)
end
it 'prevents creation of class doubles for unloaded constants' do
expect {
class_double('LoadedClas')
}.to raise_error(VerifyingDoubleNotDefinedError)
end
end
it 'can only be named with a string or a module' do
expect { instance_double(1) }.to raise_error(ArgumentError)
expect { instance_double(nil) }.to raise_error(ArgumentError)
end
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems