/
example_group_spec.rb
1159 lines (956 loc) · 36.9 KB
/
example_group_spec.rb
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require 'spec_helper'
class SelfObserver
def self.cache
@cache ||= []
end
def initialize
self.class.cache << self
end
end
module RSpec::Core
describe ExampleGroup do
it_behaves_like "metadata hash builder" do
def metadata_hash(*args)
group = ExampleGroup.describe('example description', *args)
group.metadata
end
end
context "when RSpec.configuration.format_docstrings is set to a block" do
it "formats the description with that block" do
RSpec.configuration.format_docstrings { |s| s.upcase }
group = ExampleGroup.describe(' an example ')
expect(group.description).to eq(' AN EXAMPLE ')
end
end
context 'when RSpec.configuration.treat_symbols_as_metadata_keys_with_true_values is set to false' do
before(:each) do
RSpec.configure { |c| c.treat_symbols_as_metadata_keys_with_true_values = false }
end
it 'processes string args as part of the description' do
group = ExampleGroup.describe("some", "separate", "strings")
expect(group.description).to eq("some separate strings")
end
it 'processes symbol args as part of the description' do
Kernel.stub(:warn) # to silence Symbols as args warning
group = ExampleGroup.describe(:some, :separate, :symbols)
expect(group.description).to eq("some separate symbols")
end
end
context 'when RSpec.configuration.treat_symbols_as_metadata_keys_with_true_values is set to true' do
let(:group) { ExampleGroup.describe(:symbol) }
before(:each) do
RSpec.configure { |c| c.treat_symbols_as_metadata_keys_with_true_values = true }
end
it 'does not treat the first argument as a metadata key even if it is a symbol' do
expect(group.metadata).not_to include(:symbol)
end
it 'treats the first argument as part of the description when it is a symbol' do
expect(group.description).to eq("symbol")
end
end
describe "top level group" do
it "runs its children" do
examples_run = []
group = ExampleGroup.describe("parent") do
describe("child") do
it "does something" do |ex|
examples_run << ex
end
end
end
group.run
expect(examples_run).to have(1).example
end
context "with a failure in the top level group" do
it "runs its children " do
examples_run = []
group = ExampleGroup.describe("parent") do
it "fails" do |ex|
examples_run << ex
raise "fail"
end
describe("child") do
it "does something" do |ex|
examples_run << ex
end
end
end
group.run
expect(examples_run).to have(2).examples
end
end
describe "descendants" do
it "returns self + all descendants" do
group = ExampleGroup.describe("parent") do
describe("child") do
describe("grandchild 1") {}
describe("grandchild 2") {}
end
end
expect(group.descendants.size).to eq(4)
end
end
end
describe "child" do
it "is known by parent" do
parent = ExampleGroup.describe
child = parent.describe
expect(parent.children).to eq([child])
end
it "is not registered in world" do
world = RSpec::Core::World.new
parent = ExampleGroup.describe
world.register(parent)
parent.describe
expect(world.example_groups).to eq([parent])
end
end
describe "filtering" do
let(:world) { World.new }
shared_examples "matching filters" do
context "inclusion" do
before do
filter_manager = FilterManager.new
filter_manager.include filter_metadata
world.stub(:filter_manager => filter_manager)
end
it "includes examples in groups matching filter" do
group = ExampleGroup.describe("does something", spec_metadata)
group.stub(:world) { world }
all_examples = [ group.example("first"), group.example("second") ]
expect(group.filtered_examples).to eq(all_examples)
end
it "includes examples directly matching filter" do
group = ExampleGroup.describe("does something")
group.stub(:world) { world }
filtered_examples = [
group.example("first", spec_metadata),
group.example("second", spec_metadata)
]
group.example("third (not-filtered)")
expect(group.filtered_examples).to eq(filtered_examples)
end
end
context "exclusion" do
before do
filter_manager = FilterManager.new
filter_manager.exclude filter_metadata
world.stub(:filter_manager => filter_manager)
end
it "excludes examples in groups matching filter" do
group = ExampleGroup.describe("does something", spec_metadata)
group.stub(:world) { world }
[ group.example("first"), group.example("second") ]
expect(group.filtered_examples).to be_empty
end
it "excludes examples directly matching filter" do
group = ExampleGroup.describe("does something")
group.stub(:world) { world }
[
group.example("first", spec_metadata),
group.example("second", spec_metadata)
]
unfiltered_example = group.example("third (not-filtered)")
expect(group.filtered_examples).to eq([unfiltered_example])
end
end
end
context "matching false" do
let(:spec_metadata) { { :awesome => false }}
context "against false" do
let(:filter_metadata) { { :awesome => false }}
include_examples "matching filters"
end
context "against 'false'" do
let(:filter_metadata) { { :awesome => 'false' }}
include_examples "matching filters"
end
context "against :false" do
let(:filter_metadata) { { :awesome => :false }}
include_examples "matching filters"
end
end
context "matching true" do
let(:spec_metadata) { { :awesome => true }}
context "against true" do
let(:filter_metadata) { { :awesome => true }}
include_examples "matching filters"
end
context "against 'true'" do
let(:filter_metadata) { { :awesome => 'true' }}
include_examples "matching filters"
end
context "against :true" do
let(:filter_metadata) { { :awesome => :true }}
include_examples "matching filters"
end
end
context "matching a string" do
let(:spec_metadata) { { :type => 'special' }}
context "against a string" do
let(:filter_metadata) { { :type => 'special' }}
include_examples "matching filters"
end
context "against a symbol" do
let(:filter_metadata) { { :type => :special }}
include_examples "matching filters"
end
end
context "matching a symbol" do
let(:spec_metadata) { { :type => :special }}
context "against a string" do
let(:filter_metadata) { { :type => 'special' }}
include_examples "matching filters"
end
context "against a symbol" do
let(:filter_metadata) { { :type => :special }}
include_examples "matching filters"
end
end
context "with no filters" do
it "returns all" do
group = ExampleGroup.describe
group.stub(:world) { world }
example = group.example("does something")
expect(group.filtered_examples).to eq([example])
end
end
context "with no examples or groups that match filters" do
it "returns none" do
filter_manager = FilterManager.new
filter_manager.include :awesome => false
world.stub(:filter_manager => filter_manager)
group = ExampleGroup.describe
group.stub(:world) { world }
group.example("does something")
expect(group.filtered_examples).to eq([])
end
end
end
describe '#described_class' do
context "with a constant as the first parameter" do
it "is that constant" do
expect(ExampleGroup.describe(Object) { }.described_class).to eq(Object)
end
end
context "with a string as the first parameter" do
it "is nil" do
expect(ExampleGroup.describe("i'm a computer") { }.described_class).to be_nil
end
end
context "with a constant in an outer group" do
context "and a string in an inner group" do
it "is the top level constant" do
group = ExampleGroup.describe(String) do
describe :symbol do
example "described_class is String" do
expect(described_class).to eq(String)
end
end
end
expect(group.run).to be_true
end
end
context "and metadata redefinition after `described_class` call" do
it "is the redefined level constant" do
group = ExampleGroup.describe(String) do
described_class
metadata[:example_group][:described_class] = Object
describe :symbol do
example "described_class is Object" do
expect(described_class).to eq(Object)
end
end
end
expect(group.run).to be_true
end
end
end
context "in a nested group" do
it "inherits the described class/module from the outer group" do
group = ExampleGroup.describe(String) do
describe Array do
example "describes is String" do
expect(described_class).to eq(String)
end
end
end
expect(group.run).to be_true, "expected examples in group to pass"
end
end
context "for `describe(SomeClass)` within a `describe 'some string' group" do
def define_and_run_group(define_outer_example = false)
outer_described_class = inner_described_class = nil
ExampleGroup.describe("some string") do
example { outer_described_class = described_class } if define_outer_example
describe Array do
example { inner_described_class = described_class }
end
end.run
return outer_described_class, inner_described_class
end
it "has a `nil` described_class in the outer group" do
outer_described_class, _ = define_and_run_group(:define_outer_example)
expect(outer_described_class).to be(nil)
end
it "has the inner described class as the described_class of the inner group" do
_, inner_described_class = define_and_run_group
expect(inner_described_class).to be(Array)
# This is weird, but in RSpec 2.12 (and before, presumably),
# the `described_class` value would be incorrect if there was an
# example in the outer group, and correct if there was not one.
_, inner_described_class = define_and_run_group(:define_outer_example)
expect(inner_described_class).to be(Array)
end
end
end
describe '#described_class' do
it "is the same as described_class" do
expect(self.class.described_class).to eq(self.class.described_class)
end
end
describe '#description' do
it "grabs the description from the metadata" do
group = ExampleGroup.describe(Object, "my desc") { }
expect(group.description).to eq(group.metadata[:example_group][:description])
end
end
describe '#metadata' do
it "adds the third parameter to the metadata" do
expect(ExampleGroup.describe(Object, nil, 'foo' => 'bar') { }.metadata).to include({ "foo" => 'bar' })
end
it "adds the the file_path to metadata" do
expect(ExampleGroup.describe(Object) { }.metadata[:example_group][:file_path]).to eq(relative_path(__FILE__))
end
it "has a reader for file_path" do
expect(ExampleGroup.describe(Object) { }.file_path).to eq(relative_path(__FILE__))
end
it "adds the line_number to metadata" do
expect(ExampleGroup.describe(Object) { }.metadata[:example_group][:line_number]).to eq(__LINE__)
end
end
[:focus, :focused].each do |example_alias|
describe "##{example_alias}" do
let(:focused_example) { ExampleGroup.describe.send example_alias, "a focused example" }
it 'defines an example that can be filtered with :focused => true' do
expect(focused_example.metadata[:focused]).to be_true
end
it 'defines an example that can be filtered with :focus => true' do
expect(focused_example.metadata[:focus]).to be_true
end
end
end
describe "#before, after, and around hooks" do
it "runs the before alls in order" do
group = ExampleGroup.describe
order = []
group.before(:all) { order << 1 }
group.before(:all) { order << 2 }
group.before(:all) { order << 3 }
group.example("example") {}
group.run
expect(order).to eq([1,2,3])
end
it "does not set RSpec.wants_to_quit in case of an error in before all (without fail_fast?)" do
group = ExampleGroup.describe
group.before(:all) { raise "error in before all" }
group.example("example") {}
group.run
expect(RSpec.wants_to_quit).to be_false
end
it "runs the before eachs in order" do
group = ExampleGroup.describe
order = []
group.before(:each) { order << 1 }
group.before(:each) { order << 2 }
group.before(:each) { order << 3 }
group.example("example") {}
group.run
expect(order).to eq([1,2,3])
end
it "runs the after eachs in reverse order" do
group = ExampleGroup.describe
order = []
group.after(:each) { order << 1 }
group.after(:each) { order << 2 }
group.after(:each) { order << 3 }
group.example("example") {}
group.run
expect(order).to eq([3,2,1])
end
it "runs the after alls in reverse order" do
group = ExampleGroup.describe
order = []
group.after(:all) { order << 1 }
group.after(:all) { order << 2 }
group.after(:all) { order << 3 }
group.example("example") {}
group.run
expect(order).to eq([3,2,1])
end
it "only runs before/after(:all) hooks from example groups that have specs that run" do
hooks_run = []
RSpec.configure do |c|
c.filter_run :focus => true
end
unfiltered_group = ExampleGroup.describe "unfiltered" do
before(:all) { hooks_run << :unfiltered_before_all }
after(:all) { hooks_run << :unfiltered_after_all }
context "a subcontext" do
it("has an example") { }
end
end
filtered_group = ExampleGroup.describe "filtered", :focus => true do
before(:all) { hooks_run << :filtered_before_all }
after(:all) { hooks_run << :filtered_after_all }
context "a subcontext" do
it("has an example") { }
end
end
unfiltered_group.run
filtered_group.run
expect(hooks_run).to eq([:filtered_before_all, :filtered_after_all])
end
it "runs before_all_defined_in_config, before all, before each, example, after each, after all, after_all_defined_in_config in that order" do
order = []
RSpec.configure do |c|
c.before(:all) { order << :before_all_defined_in_config }
c.after(:all) { order << :after_all_defined_in_config }
end
group = ExampleGroup.describe
group.before(:all) { order << :top_level_before_all }
group.before(:each) { order << :before_each }
group.after(:each) { order << :after_each }
group.after(:all) { order << :top_level_after_all }
group.example("top level example") { order << :top_level_example }
context1 = group.describe("context 1")
context1.before(:all) { order << :nested_before_all }
context1.example("nested example 1") { order << :nested_example_1 }
context2 = group.describe("context 2")
context2.after(:all) { order << :nested_after_all }
context2.example("nested example 2") { order << :nested_example_2 }
group.run
expect(order).to eq([
:before_all_defined_in_config,
:top_level_before_all,
:before_each,
:top_level_example,
:after_each,
:nested_before_all,
:before_each,
:nested_example_1,
:after_each,
:before_each,
:nested_example_2,
:after_each,
:nested_after_all,
:top_level_after_all,
:after_all_defined_in_config
])
end
context "after(:all)" do
let(:outer) { ExampleGroup.describe }
let(:inner) { outer.describe }
it "has access to state defined before(:all)" do
outer.before(:all) { @outer = "outer" }
inner.before(:all) { @inner = "inner" }
outer.after(:all) do
expect(@outer).to eq("outer")
expect(@inner).to eq("inner")
end
inner.after(:all) do
expect(@inner).to eq("inner")
expect(@outer).to eq("outer")
end
outer.run
end
it "cleans up ivars in after(:all)" do
outer.before(:all) { @outer = "outer" }
inner.before(:all) { @inner = "inner" }
outer.run
expect(inner.before_all_ivars[:@inner]).to be_nil
expect(inner.before_all_ivars[:@outer]).to be_nil
expect(outer.before_all_ivars[:@inner]).to be_nil
expect(outer.before_all_ivars[:@outer]).to be_nil
end
end
it "treats an error in before(:each) as a failure" do
group = ExampleGroup.describe
group.before(:each) { raise "error in before each" }
example = group.example("equality") { expect(1).to eq(2) }
expect(group.run).to be(false)
expect(example.metadata[:execution_result][:exception].message).to eq("error in before each")
end
it "treats an error in before(:all) as a failure" do
group = ExampleGroup.describe
group.before(:all) { raise "error in before all" }
example = group.example("equality") { expect(1).to eq(2) }
expect(group.run).to be_false
expect(example.metadata).not_to be_nil
expect(example.metadata[:execution_result]).not_to be_nil
expect(example.metadata[:execution_result][:exception]).not_to be_nil
expect(example.metadata[:execution_result][:exception].message).to eq("error in before all")
end
it "exposes instance variables set in before(:all) from after(:all) even if a before(:all) error occurs" do
ivar_value_in_after_hook = nil
group = ExampleGroup.describe do
before(:all) do
@an_ivar = :set_in_before_all
raise "fail"
end
after(:all) { ivar_value_in_after_hook = @an_ivar }
it("has a spec") { }
end
group.run
expect(ivar_value_in_after_hook).to eq(:set_in_before_all)
end
it "treats an error in before(:all) as a failure for a spec in a nested group" do
example = nil
group = ExampleGroup.describe do
before(:all) { raise "error in before all" }
describe "nested" do
example = it("equality") { expect(1).to eq(2) }
end
end
group.run
expect(example.metadata).not_to be_nil
expect(example.metadata[:execution_result]).not_to be_nil
expect(example.metadata[:execution_result][:exception]).not_to be_nil
expect(example.metadata[:execution_result][:exception].message).to eq("error in before all")
end
context "when an error occurs in an after(:all) hook" do
before(:each) do
RSpec.configuration.reporter.stub(:message)
end
let(:group) do
ExampleGroup.describe do
after(:all) { raise "error in after all" }
it("equality") { expect(1).to eq(1) }
end
end
it "allows the example to pass" do
group.run
example = group.examples.first
expect(example.metadata).not_to be_nil
expect(example.metadata[:execution_result]).not_to be_nil
expect(example.metadata[:execution_result][:status]).to eq("passed")
end
it "rescues the error and prints it out" do
RSpec.configuration.reporter.should_receive(:message).with(/error in after all/)
group.run
end
end
it "has access to example options within before(:each)" do
group = ExampleGroup.describe
option = nil
group.before(:each) {|ex| option = ex.options[:data] }
group.example("no-op", :data => :sample) { }
group.run
expect(option).to eq(:sample)
end
it "has access to example options within after(:each)" do
group = ExampleGroup.describe
option = nil
group.after(:each) {|ex| option = ex.options[:data] }
group.example("no-op", :data => :sample) { }
group.run
expect(option).to eq(:sample)
end
end
%w[pending xit xspecify xexample].each do |method_name|
describe "::#{method_name}" do
before do
@group = ExampleGroup.describe
@group.send(method_name, "is pending") { }
end
it "generates a pending example" do
@group.run
expect(@group.examples.first).to be_pending
end
it "sets the pending message", :if => method_name == 'pending' do
@group.run
expect(@group.examples.first.metadata[:execution_result][:pending_message]).to eq(RSpec::Core::Pending::NO_REASON_GIVEN)
end
it "sets the pending message", :unless => method_name == 'pending' do
@group.run
expect(@group.examples.first.metadata[:execution_result][:pending_message]).to eq("Temporarily disabled with #{method_name}")
end
end
end
describe "adding examples" do
it "allows adding an example using 'it'" do
group = ExampleGroup.describe
group.it("should do something") { }
expect(group.examples.size).to eq(1)
end
it "exposes all examples at examples" do
group = ExampleGroup.describe
group.it("should do something 1") { }
group.it("should do something 2") { }
group.it("should do something 3") { }
expect(group).to have(3).examples
end
it "maintains the example order" do
group = ExampleGroup.describe
group.it("should 1") { }
group.it("should 2") { }
group.it("should 3") { }
expect(group.examples[0].description).to eq('should 1')
expect(group.examples[1].description).to eq('should 2')
expect(group.examples[2].description).to eq('should 3')
end
end
describe Object, "describing nested example_groups", :little_less_nested => 'yep' do
describe "A sample nested group", :nested_describe => "yep" do
it "sets the described class to the described class of the outer most group" do |ex|
expect(ex.example_group.described_class).to eq(ExampleGroup)
end
it "sets the description to 'A sample nested describe'" do |ex|
expect(ex.example_group.description).to eq('A sample nested group')
end
it "has top level metadata from the example_group and its parent groups" do |ex|
expect(ex.example_group.metadata).to include(:little_less_nested => 'yep', :nested_describe => 'yep')
end
it "exposes the parent metadata to the contained examples" do |ex|
expect(ex.metadata).to include(:little_less_nested => 'yep', :nested_describe => 'yep')
end
end
end
describe "#run_examples" do
let(:reporter) { double("reporter").as_null_object }
it "returns true if all examples pass" do
group = ExampleGroup.describe('group') do
example('ex 1') { expect(1).to eq(1) }
example('ex 2') { expect(1).to eq(1) }
end
group.stub(:filtered_examples) { group.examples.extend(Extensions::Ordered::Examples) }
expect(group.run(reporter)).to be_true
end
it "returns false if any of the examples fail" do
group = ExampleGroup.describe('group') do
example('ex 1') { expect(1).to eq(1) }
example('ex 2') { expect(1).to eq(2) }
end
group.stub(:filtered_examples) { group.examples.extend(Extensions::Ordered::Examples) }
expect(group.run(reporter)).to be_false
end
it "runs all examples, regardless of any of them failing" do
group = ExampleGroup.describe('group') do
example('ex 1') { expect(1).to eq(2) }
example('ex 2') { expect(1).to eq(1) }
end
group.stub(:filtered_examples) { group.examples.extend(Extensions::Ordered::Examples) }
group.filtered_examples.each do |example|
example.should_receive(:run)
end
expect(group.run(reporter)).to be_false
end
end
describe "how instance variables are inherited" do
before(:all) do
@before_all_top_level = 'before_all_top_level'
end
before(:each) do
@before_each_top_level = 'before_each_top_level'
end
it "can access a before each ivar at the same level" do
expect(@before_each_top_level).to eq('before_each_top_level')
end
it "can access a before all ivar at the same level" do
expect(@before_all_top_level).to eq('before_all_top_level')
end
it "can access the before all ivars in the before_all_ivars hash", :ruby => 1.8 do |ex|
expect(ex.example_group.before_all_ivars).to include('@before_all_top_level' => 'before_all_top_level')
end
it "can access the before all ivars in the before_all_ivars hash", :ruby => 1.9 do |ex|
expect(ex.example_group.before_all_ivars).to include(:@before_all_top_level => 'before_all_top_level')
end
describe "but now I am nested" do
it "can access a parent example groups before each ivar at a nested level" do
expect(@before_each_top_level).to eq('before_each_top_level')
end
it "can access a parent example groups before all ivar at a nested level" do
expect(@before_all_top_level).to eq("before_all_top_level")
end
it "changes to before all ivars from within an example do not persist outside the current describe" do
@before_all_top_level = "ive been changed"
end
describe "accessing a before_all ivar that was changed in a parent example_group" do
it "does not have access to the modified version" do
expect(@before_all_top_level).to eq('before_all_top_level')
end
end
end
end
describe "ivars are not shared across examples" do
it "(first example)" do
@a = 1
expect(defined?(@b)).to be_false
end
it "(second example)" do
@b = 2
expect(defined?(@a)).to be_false
end
end
describe "#top_level_description" do
it "returns the description from the outermost example group" do
group = nil
ExampleGroup.describe("top") do
context "middle" do
group = describe "bottom" do
end
end
end
expect(group.top_level_description).to eq("top")
end
end
describe "#run" do
let(:reporter) { double("reporter").as_null_object }
context "with fail_fast? => true" do
let(:group) do
group = RSpec::Core::ExampleGroup.describe
group.stub(:fail_fast?) { true }
group
end
it "does not run examples after the failed example" do
examples_run = []
group.example('example 1') { examples_run << self }
group.example('example 2') { examples_run << self; fail; }
group.example('example 3') { examples_run << self }
group.run
expect(examples_run.length).to eq(2)
end
it "sets RSpec.wants_to_quit flag if encountering an exception in before(:all)" do
group.before(:all) { raise "error in before all" }
group.example("equality") { expect(1).to eq(2) }
expect(group.run).to be_false
expect(RSpec.wants_to_quit).to be_true
end
end
context "with RSpec.wants_to_quit=true" do
let(:group) { RSpec::Core::ExampleGroup.describe }
before do
RSpec.stub(:wants_to_quit) { true }
RSpec.stub(:clear_remaining_example_groups)
end
it "returns without starting the group" do
reporter.should_not_receive(:example_group_started)
group.run(reporter)
end
context "at top level" do
it "purges remaining groups" do
RSpec.should_receive(:clear_remaining_example_groups)
group.run(reporter)
end
end
context "in a nested group" do
it "does not purge remaining groups" do
nested_group = group.describe
RSpec.should_not_receive(:clear_remaining_example_groups)
nested_group.run(reporter)
end
end
end
context "with all examples passing" do
it "returns true" do
group = RSpec::Core::ExampleGroup.describe("something") do
it "does something" do
# pass
end
describe "nested" do
it "does something else" do
# pass
end
end
end
expect(group.run(reporter)).to be_true
end
end
context "with top level example failing" do
it "returns false" do
group = RSpec::Core::ExampleGroup.describe("something") do
it "does something (wrong - fail)" do
raise "fail"
end
describe "nested" do
it "does something else" do
# pass
end
end
end
expect(group.run(reporter)).to be_false
end
end
context "with nested example failing" do
it "returns true" do
group = RSpec::Core::ExampleGroup.describe("something") do
it "does something" do
# pass
end
describe "nested" do
it "does something else (wrong -fail)" do
raise "fail"
end
end
end
expect(group.run(reporter)).to be_false
end
end
end
%w[include_examples include_context].each do |name|
describe "##{name}" do
let(:group) { ExampleGroup.describe }
before do
group.shared_examples "named this" do
example("does something") {}
end
end
it "includes the named examples" do
group.send(name, "named this")
expect(group.examples.first.description).to eq("does something")
end
it "raises a helpful error message when shared content is not found" do
expect do
group.send(name, "shared stuff")
end.to raise_error(ArgumentError, /Could not find .* "shared stuff"/)
end
it "passes parameters to the shared content" do
passed_params = {}
group = ExampleGroup.describe