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require 'helper'
describe Pry::Hooks do
before do
@hooks = Pry::Hooks.new
end
describe "adding a new hook" do
it 'should not execute hook while adding it' do
run = false
@hooks.add_hook(:test_hook, :my_name) { run = true }
run.should == false
end
it 'should not allow adding of a hook with a duplicate name' do
@hooks.add_hook(:test_hook, :my_name) {}
lambda { @hooks.add_hook(:test_hook, :my_name) {} }.should.raise ArgumentError
end
it 'should create a new hook with a block' do
@hooks.add_hook(:test_hook, :my_name) { }
@hooks.hook_count(:test_hook).should == 1
end
it 'should create a new hook with a callable' do
@hooks.add_hook(:test_hook, :my_name, proc { })
@hooks.hook_count(:test_hook).should == 1
end
it 'should use block if given both block and callable' do
run = false
foo = false
@hooks.add_hook(:test_hook, :my_name, proc { foo = true }) { run = true }
@hooks.hook_count(:test_hook).should == 1
@hooks.exec_hook(:test_hook)
run.should == true
foo.should == false
end
it 'should raise if not given a block or any other object' do
lambda { @hooks.add_hook(:test_hook, :my_name) }.should.raise ArgumentError
end
it 'should create multiple hooks for an event' do
@hooks.add_hook(:test_hook, :my_name) {}
@hooks.add_hook(:test_hook, :my_name2) {}
@hooks.hook_count(:test_hook).should == 2
end
it 'should return a count of 0 for an empty hook' do
@hooks.hook_count(:test_hook).should == 0
end
end
describe "Pry::Hooks#merge" do
describe "merge!" do
it 'should merge in the Pry::Hooks' do
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing) {}
h2 = Pry::Hooks.new
h2.merge!(h1)
h2.get_hook(:test_hook, :testing).should == h1.get_hook(:test_hook, :testing)
end
it 'should not share merged elements with original' do
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing) {}
h2 = Pry::Hooks.new
h2.merge!(h1)
h2.add_hook(:test_hook, :testing2) {}
h2.get_hook(:test_hook, :testing2).should.not == h1.get_hook(:test_hook, :testing2)
end
it 'should NOT overwrite hooks belonging to shared event in receiver' do
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing) {}
callable = proc {}
h2 = Pry::Hooks.new.add_hook(:test_hook, :testing2, callable)
h2.merge!(h1)
h2.get_hook(:test_hook, :testing2).should == callable
end
it 'should overwrite identical hook in receiver' do
callable1 = proc { :one }
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing, callable1)
callable2 = proc { :two }
h2 = Pry::Hooks.new.add_hook(:test_hook, :testing, callable2)
h2.merge!(h1)
h2.get_hook(:test_hook, :testing).should == callable1
h2.hook_count(:test_hook).should == 1
end
it 'should preserve hook order' do
name = ""
h1 = Pry::Hooks.new
h1.add_hook(:test_hook, :testing3) { name << "h" }
h1.add_hook(:test_hook, :testing4) { name << "n" }
h2 = Pry::Hooks.new
h2.add_hook(:test_hook, :testing1) { name << "j" }
h2.add_hook(:test_hook, :testing2) { name << "o" }
h2.merge!(h1)
h2.exec_hook(:test_hook)
name.should == "john"
end
describe "merge" do
it 'should return a fresh, independent instance' do
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing) {}
h2 = Pry::Hooks.new
h3 = h2.merge(h1)
h3.should.not == h1
h3.should.not == h2
end
it 'should contain hooks from original instance' do
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing) {}
h2 = Pry::Hooks.new.add_hook(:test_hook2, :testing) {}
h3 = h2.merge(h1)
h3.get_hook(:test_hook, :testing).should == h1.get_hook(:test_hook, :testing)
h3.get_hook(:test_hook2, :testing).should == h2.get_hook(:test_hook2, :testing)
end
it 'should not affect original instances when new hooks are added' do
h1 = Pry::Hooks.new.add_hook(:test_hook, :testing) {}
h2 = Pry::Hooks.new.add_hook(:test_hook2, :testing) {}
h3 = h2.merge(h1)
h3.add_hook(:test_hook3, :testing) {}
h1.get_hook(:test_hook3, :testing).should == nil
h2.get_hook(:test_hook3, :testing).should == nil
end
end
end
end
describe "dupping a Pry::Hooks instance" do
it 'should share hooks with original' do
@hooks.add_hook(:test_hook, :testing) do
:none_such
end
hooks_dup = @hooks.dup
hooks_dup.get_hook(:test_hook, :testing).should == @hooks.get_hook(:test_hook, :testing)
end
it 'adding a new event to dupped instance should not affect original' do
@hooks.add_hook(:test_hook, :testing) { :none_such }
hooks_dup = @hooks.dup
hooks_dup.add_hook(:other_test_hook, :testing) { :okay_man }
hooks_dup.get_hook(:other_test_hook, :testing).should.not == @hooks.get_hook(:other_test_hook, :testing)
end
it 'adding a new hook to dupped instance should not affect original' do
@hooks.add_hook(:test_hook, :testing) { :none_such }
hooks_dup = @hooks.dup
hooks_dup.add_hook(:test_hook, :testing2) { :okay_man }
hooks_dup.get_hook(:test_hook, :testing2).should.not == @hooks.get_hook(:test_hook, :testing2)
end
end
describe "getting hooks" do
describe "get_hook" do
it 'should return the correct requested hook' do
run = false
fun = false
@hooks.add_hook(:test_hook, :my_name) { run = true }
@hooks.add_hook(:test_hook, :my_name2) { fun = true }
@hooks.get_hook(:test_hook, :my_name).call
run.should == true
fun.should == false
end
it 'should return nil if hook does not exist' do
@hooks.get_hook(:test_hook, :my_name).should == nil
end
end
describe "get_hooks" do
it 'should return a hash of hook names/hook functions for an event' do
hook1 = proc { 1 }
hook2 = proc { 2 }
@hooks.add_hook(:test_hook, :my_name1, hook1)
@hooks.add_hook(:test_hook, :my_name2, hook2)
hash = @hooks.get_hooks(:test_hook)
hash.size.should == 2
hash[:my_name1].should == hook1
hash[:my_name2].should == hook2
end
it 'should return an empty hash if no hooks defined' do
@hooks.get_hooks(:test_hook).should == {}
end
end
end
describe "clearing all hooks for an event" do
it 'should clear all hooks' do
@hooks.add_hook(:test_hook, :my_name) { }
@hooks.add_hook(:test_hook, :my_name2) { }
@hooks.add_hook(:test_hook, :my_name3) { }
@hooks.clear(:test_hook)
@hooks.hook_count(:test_hook).should == 0
end
end
describe "deleting a hook" do
it 'should successfully delete a hook' do
@hooks.add_hook(:test_hook, :my_name) {}
@hooks.delete_hook(:test_hook, :my_name)
@hooks.hook_count(:test_hook).should == 0
end
it 'should return the deleted hook' do
run = false
@hooks.add_hook(:test_hook, :my_name) { run = true }
@hooks.delete_hook(:test_hook, :my_name).call
run.should == true
end
it 'should return nil if hook does not exist' do
@hooks.delete_hook(:test_hook, :my_name).should == nil
end
end
describe "executing a hook" do
it 'should execute block hook' do
run = false
@hooks.add_hook(:test_hook, :my_name) { run = true }
@hooks.exec_hook(:test_hook)
run.should == true
end
it 'should execute proc hook' do
run = false
@hooks.add_hook(:test_hook, :my_name, proc { run = true })
@hooks.exec_hook(:test_hook)
run.should == true
end
it 'should execute a general callable hook' do
callable = Object.new.tap do |obj|
obj.instance_variable_set(:@test_var, nil)
class << obj
attr_accessor :test_var
def call() @test_var = true; end
end
end
@hooks.add_hook(:test_hook, :my_name, callable)
@hooks.exec_hook(:test_hook)
callable.test_var.should == true
end
it 'should execute all hooks for an event if more than one is defined' do
x = nil
y = nil
@hooks.add_hook(:test_hook, :my_name1) { y = true }
@hooks.add_hook(:test_hook, :my_name2) { x = true }
@hooks.exec_hook(:test_hook)
x.should == true
y.should == true
end
it 'should execute hooks in order' do
array = []
@hooks.add_hook(:test_hook, :my_name1) { array << 1 }
@hooks.add_hook(:test_hook, :my_name2) { array << 2 }
@hooks.add_hook(:test_hook, :my_name3) { array << 3 }
@hooks.exec_hook(:test_hook)
array.should == [1, 2, 3]
end
it 'return value of exec_hook should be that of last executed hook' do
@hooks.add_hook(:test_hook, :my_name1) { 1 }
@hooks.add_hook(:test_hook, :my_name2) { 2 }
@hooks.add_hook(:test_hook, :my_name3) { 3 }
@hooks.exec_hook(:test_hook).should == 3
end
it 'should add exceptions to the errors array' do
@hooks.add_hook(:test_hook, :foo1) { raise 'one' }
@hooks.add_hook(:test_hook, :foo2) { raise 'two' }
@hooks.add_hook(:test_hook, :foo3) { raise 'three' }
@hooks.exec_hook(:test_hook)
@hooks.errors.map(&:message).should == ['one', 'two', 'three']
end
it 'should return the last exception raised as the return value' do
@hooks.add_hook(:test_hook, :foo1) { raise 'one' }
@hooks.add_hook(:test_hook, :foo2) { raise 'two' }
@hooks.add_hook(:test_hook, :foo3) { raise 'three' }
@hooks.exec_hook(:test_hook).should == @hooks.errors.last
end
end
describe "integration tests" do
describe "when_started hook" do
it 'should yield options to the hook' do
options = nil
Pry.config.hooks.add_hook(:when_started, :test_hook) { |target, opt, _| options = opt }
redirect_pry_io(StringIO.new("exit"), out=StringIO.new) do
Pry.start binding, :hello => :baby
end
options[:hello].should == :baby
Pry.config.hooks.delete_hook(:when_started, :test_hook)
end
describe "target" do
it 'should yield the target, as a binding ' do
b = nil
Pry.config.hooks.add_hook(:when_started, :test_hook) { |target, opt, _| b = target }
redirect_pry_io(StringIO.new("exit"), out=StringIO.new) do
Pry.start 5, :hello => :baby
end
b.is_a?(Binding).should == true
Pry.config.hooks.delete_hook(:when_started, :test_hook)
end
it 'should yield the target to the hook' do
b = nil
Pry.config.hooks.add_hook(:when_started, :test_hook) { |target, opt, _| b = target }
redirect_pry_io(StringIO.new("exit"), out=StringIO.new) do
Pry.start 5, :hello => :baby
end
b.eval('self').should == 5
Pry.config.hooks.delete_hook(:when_started, :test_hook)
end
end
it 'should allow overriding of target (and binding_stack)' do
options = nil
o = Object.new
class << o; attr_accessor :value; end
Pry.config.hooks.add_hook(:when_started, :test_hook) { |target, opt, _pry_| _pry_.binding_stack = [Pry.binding_for(o)] }
redirect_pry_io(InputTester.new("@value = true","exit-all")) do
Pry.start binding, :hello => :baby
end
o.value.should == true
Pry.config.hooks.delete_hook(:when_started, :test_hook)
end
end
describe "after_session hook" do
it 'should always run, even if uncaught exception bubbles out of repl' do
o = OpenStruct.new
o.great_escape = Class.new(StandardError)
old_ew = Pry.config.exception_whitelist
Pry.config.exception_whitelist << o.great_escape
array = [1, 2, 3, 4, 5]
begin
redirect_pry_io(StringIO.new("raise great_escape"), out=StringIO.new) do
Pry.start o, :hooks => Pry::Hooks.new.add_hook(:after_session, :cleanup) { array = nil }
end
rescue => ex
exception = ex
end
# ensure that an exception really was raised and it broke out
# of the repl
exception.is_a?(o.great_escape).should == true
# check that after_session hook ran
array.should == nil
# cleanup after test
Pry.config.exception_whitelist = old_ew
end
describe "exceptions" do
before do
Pry.config.hooks.add_hook(:after_eval, :baddums){ raise "Baddums" }
Pry.config.hooks.add_hook(:after_eval, :simbads){ raise "Simbads" }
end
after do
Pry.config.hooks.delete_hook(:after_eval, :baddums)
Pry.config.hooks.delete_hook(:after_eval, :simbads)
end
it "should not raise exceptions" do
lambda{
mock_pry("1", "2", "3")
}.should.not.raise
end
it "should print out a notice for each exception raised" do
mock_pry("1").should =~ /after_eval hook failed: RuntimeError: Baddums\n.*after_eval hook failed: RuntimeError: Simbads/m
end
end
end
end
describe "anonymous hooks" do
it 'should allow adding of hook without a name' do
@hooks.add_hook(:test_hook, nil) {}
@hooks.hook_count(:test_hook).should == 1
end
it 'should only allow one anonymous hook to exist' do
@hooks.add_hook(:test_hook, nil) { }
@hooks.add_hook(:test_hook, nil) { }
@hooks.hook_count(:test_hook).should == 1
end
it 'should execute most recently added anonymous hook' do
x = nil
y = nil
@hooks.add_hook(:test_hook, nil) { y = 1 }
@hooks.add_hook(:test_hook, nil) { x = 2 }
@hooks.exec_hook(:test_hook)
y.should == nil
x.should == 2
end
end
describe "deprecated hash-based API" do
after do
Pry.config.hooks.clear_all if Pry.config.hooks
end
describe "Pry.config.hooks" do
it 'should allow a hash-assignment' do
Pry.config.hooks = { :before_session => proc { :hello } }
Pry.config.hooks.get_hook(:before_session, nil).call.should == :hello
end
describe "Pry.config.hooks[]" do
it 'should return the only anonymous hook' do
Pry.config.hooks = { :before_session => proc { :hello } }
Pry.config.hooks[:before_session].call.should == :hello
end
it 'should add an anonymous hook when using Pry.config.hooks[]=' do
Pry.config.hooks[:before_session] = proc { :bing }
Pry.config.hooks.hook_count(:before_session).should == 1
end
it 'should add overwrite previous anonymous hooks with new one when calling Pry.config.hooks[]= multiple times' do
x = nil
Pry.config.hooks[:before_session] = proc { x = 1 }
Pry.config.hooks[:before_session] = proc { x = 2 }
Pry.config.hooks.exec_hook(:before_session)
Pry.config.hooks.hook_count(:before_session).should == 1
x.should == 2
end
end
end
describe "Pry.start" do
it 'should accept a hash for :hooks parameter' do
redirect_pry_io(InputTester.new("exit-all"), out=StringIO.new) do
Pry.start binding, :hooks => { :before_session => proc { |output, _, _| output.puts 'hello friend' } }
end
out.string.should =~ /hello friend/
end
end
end
end
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