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require File.expand_path('../../lib/minitest/stub_const', __FILE__)
require 'minitest/autorun'
require 'minitest/mock'
require 'minitest/autorun'
module A
module B
def self.what
:old
end
end
module C
def self.who
:you
end
end
end
describe 'Object' do
describe '#stub_const' do
before do
@mock = Minitest::Mock.new
@mock.expect(:what, :new)
end
it 'replaces a constant for the duration of a block' do
A.stub_const(:B, @mock) do
assert_equal :new, A::B.what
end
@mock.verify
end
it 'restores the original value after the block' do
A.stub_const(:B, @mock) { }
assert_equal :old, A::B.what
end
it 'does not raise any warnings' do
assert_silent { A.stub_const(:B, @mock) { } }
end
it 'should stub undefined constants' do
refute defined?(A::X)
A.stub_const(:X, @mock) do
assert_equal :new, A::X.what
end
refute defined?(A::X)
@mock.verify
end
end
describe '#stub_remove_const' do
it 'removes a constant for the duration of a block' do
A.stub_remove_const(:B) do
refute defined?(A::B)
end
end
it 'restores the original value after the block' do
A.stub_remove_const(:B) { }
assert_equal :old, A::B.what
end
it 'does not raise any warnings' do
assert_silent { A.stub_remove_const(:B) { } }
end
it 'leaves undefined constants undefined' do
refute defined?(A::X)
A.stub_remove_const(:X) { }
refute defined?(A::X)
end
end
describe '#stub_consts' do
before do
@mock = Minitest::Mock.new
@mock.expect(:what, :new)
@mock2 = Minitest::Mock.new
@mock2.expect(:who, :me)
@mock3 = Minitest::Mock.new
@mock3.expect(:where, :there)
end
def run_stub_block
A.stub_consts(B: @mock, C: @mock2, D: @mock3) do
assert_equal :new, A::B.what
assert_equal :me, A::C.who
assert_equal :there, A::D.where
end
end
it 'replaces a set of constants for the duration of a block' do
run_stub_block
@mock.verify
@mock2.verify
@mock3.verify
end
it 'restores previous values' do
run_stub_block
assert_equal :old, A::B.what
assert_equal :you, A::C.who
end
it 'removes constants that were undefined prior to the block' do
run_stub_block
refute A.const_defined?(:D)
end
end
end
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