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require "spec_helper"
module RSpec::Core
describe Hooks do
class HooksHost
include Hooks
end
[:before, :after, :around].each do |type|
[:each, :all].each do |scope|
next if type == :around && scope == :all
describe "##{type}(#{scope})" do
it_behaves_like "metadata hash builder" do
define_method :metadata_hash do |*args|
instance = HooksHost.new
args.unshift scope if scope
hooks = instance.send(type, *args) {}
hooks.first.options
end
end
end
end
[true, false].each do |config_value|
context "when RSpec.configuration.treat_symbols_as_metadata_keys_with_true_values is set to #{config_value}" do
before(:each) do
Kernel.stub(:warn)
RSpec.configure { |c| c.treat_symbols_as_metadata_keys_with_true_values = config_value }
end
describe "##{type}(no scope)" do
let(:instance) { HooksHost.new }
it "defaults to :each scope if no arguments are given" do
hooks = instance.send(type) {}
hook = hooks.first
expect(instance.hooks[type][:each]).to include(hook)
end
it "defaults to :each scope if the only argument is a metadata hash" do
hooks = instance.send(type, :foo => :bar) {}
hook = hooks.first
expect(instance.hooks[type][:each]).to include(hook)
end
it "raises an error if only metadata symbols are given as arguments" do
expect { instance.send(type, :foo, :bar) {} }.to raise_error(ArgumentError)
end
end
end
end
end
[:before, :after].each do |type|
[:each, :all, :suite].each do |scope|
[true, false].each do |config_value|
context "when RSpec.configuration.treat_symbols_as_metadata_keys_with_true_values is set to #{config_value}" do
before(:each) do
RSpec.configure { |c| c.treat_symbols_as_metadata_keys_with_true_values = config_value }
end
describe "##{type}(#{scope.inspect})" do
let(:instance) { HooksHost.new }
let!(:hook) do
hooks = instance.send(type, scope) {}
hooks.first
end
it "does not make #{scope.inspect} a metadata key" do
expect(hook.options).to be_empty
end
it "is scoped to #{scope.inspect}" do
expect(instance.hooks[type][scope]).to include(hook)
end
end
end
end
end
end
describe "#around" do
context "when not running the example within the around block" do
it "does not run the example" do
examples = []
group = ExampleGroup.describe do
around do |example|
end
it "foo" do
examples << self
end
end
group.run
expect(examples).to have(0).example
end
end
context "when running the example within the around block" do
it "runs the example" do
examples = []
group = ExampleGroup.describe do
around do |example|
example.run
end
it "foo" do
examples << self
end
end
group.run
expect(examples).to have(1).example
end
end
context "when running the example within a block passed to a method" do
it "runs the example" do
examples = []
group = ExampleGroup.describe do
def yielder
yield
end
around do |example|
yielder { example.run }
end
it "foo" do
examples << self
end
end
group.run
expect(examples).to have(1).example
end
end
end
[:all, :each].each do |scope|
describe "prepend_before(#{scope})" do
it "adds to the front of the list of before(:#{scope}) hooks" do
messages = []
RSpec.configure { |config| config.before(scope) { messages << "config 3" } }
RSpec.configure { |config| config.prepend_before(scope) { messages << "config 2" } }
RSpec.configure { |config| config.before(scope) { messages << "config 4" } }
RSpec.configure { |config| config.prepend_before(scope) { messages << "config 1" } }
group = ExampleGroup.describe { example {} }
group.before(scope) { messages << "group 3" }
group.prepend_before(scope) { messages << "group 2" }
group.before(scope) { messages << "group 4" }
group.prepend_before(scope) { messages << "group 1" }
group.run
expect(messages).to eq([
'group 1',
'group 2',
'config 1',
'config 2',
'config 3',
'config 4',
'group 3',
'group 4'
])
end
end
describe "append_before(#{scope})" do
it "adds to the back of the list of before(:#{scope}) hooks (same as `before`)" do
messages = []
RSpec.configure { |config| config.before(scope) { messages << "config 1" } }
RSpec.configure { |config| config.append_before(scope) { messages << "config 2" } }
RSpec.configure { |config| config.before(scope) { messages << "config 3" } }
group = ExampleGroup.describe { example {} }
group.before(scope) { messages << "group 1" }
group.append_before(scope) { messages << "group 2" }
group.before(scope) { messages << "group 3" }
group.run
expect(messages).to eq([
'config 1',
'config 2',
'config 3',
'group 1',
'group 2',
'group 3'
])
end
end
describe "prepend_after(#{scope})" do
it "adds to the front of the list of after(:#{scope}) hooks (same as `after`)" do
messages = []
RSpec.configure { |config| config.after(scope) { messages << "config 3" } }
RSpec.configure { |config| config.prepend_after(scope) { messages << "config 2" } }
RSpec.configure { |config| config.after(scope) { messages << "config 1" } }
group = ExampleGroup.describe { example {} }
group.after(scope) { messages << "group 3" }
group.prepend_after(scope) { messages << "group 2" }
group.after(scope) { messages << "group 1" }
group.run
expect(messages).to eq([
'group 1',
'group 2',
'group 3',
'config 1',
'config 2',
'config 3'
])
end
end
describe "append_after(#{scope})" do
it "adds to the back of the list of after(:#{scope}) hooks" do
messages = []
RSpec.configure { |config| config.after(scope) { messages << "config 2" } }
RSpec.configure { |config| config.append_after(scope) { messages << "config 3" } }
RSpec.configure { |config| config.after(scope) { messages << "config 1" } }
RSpec.configure { |config| config.append_after(scope) { messages << "config 4" } }
group = ExampleGroup.describe { example {} }
group.after(scope) { messages << "group 2" }
group.append_after(scope) { messages << "group 3" }
group.after(scope) { messages << "group 1" }
group.append_after(scope) { messages << "group 4" }
group.run
expect(messages).to eq([
'group 1',
'group 2',
'config 1',
'config 2',
'config 3',
'config 4',
'group 3',
'group 4'
])
end
end
end
describe "lambda" do
it "can be used as a hook" do
messages = []
count = 0
hook = lambda {|e| messages << "hook #{count = count + 1}"; e.run }
RSpec.configure do |c|
c.around(:each, &hook)
c.around(:each, &hook)
end
group = ExampleGroup.describe { example { messages << "example" } }
group.run
expect(messages).to eq ["hook 1", "hook 2", "example"]
end
end
end
end
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