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require 'helper'
describe Pry do
before do
@str_output = StringIO.new
end
if RUBY_VERSION =~ /1.9/
describe "Exotic object support" do
# regression test for exotic object support
it "Should not error when return value is a BasicObject instance" do
lambda do
redirect_pry_io(InputTester.new("BasicObject.new", "exit-all"), StringIO.new) do
Pry.start
end
end.should.not.raise NoMethodError
end
end
end
describe "Pry.binding_for" do
# regression test for burg's bug (see git history)
it "Should not error when object doesn't have a valid == method" do
o = Object.new
def o.==(other)
raise
end
lambda { Pry.binding_for(o) }.should.not.raise Exception
end
end
describe "open a Pry session on an object" do
describe "rep" do
before do
class Hello
end
end
after do
Object.send(:remove_const, :Hello)
end
# bug fix for https://github.com/banister/pry/issues/93
it 'should not leak pry constants into Object namespace' do
input_string = "Command"
o = Object.new
pry_tester = Pry.new(:input => StringIO.new(input_string),
:output => @str_output,
:exception_handler => proc { |_, exception, _pry_| @excep = exception },
:print => proc {}
).rep(o)
@excep.is_a?(NameError).should == true
end
if defined?(BasicObject)
it 'should be able to operate inside the BasicObject class' do
redirect_pry_io(InputTester.new(":foo", "Pad.obj = _", "exit-all")) do
BasicObject.pry
end
Pad.obj.should == :foo
end
end
it 'should set an ivar on an object' do
input_string = "@x = 10"
input = InputTester.new(input_string)
o = Object.new
pry_tester = Pry.new(:input => input, :output => Pry::NullOutput)
pry_tester.rep(o)
o.instance_variable_get(:@x).should == 10
end
it 'should display error and throw(:breakout) if Pry instance runs out of input' do
catch(:breakout) do
redirect_pry_io(StringIO.new(":nothing\n"), @str_output) do
Pry.new.repl
end
end
@str_output.string.should =~ /Error: Pry ran out of things to read/
end
it 'should make self evaluate to the receiver of the rep session' do
o = :john
pry_tester = Pry.new(:input => InputTester.new("self"), :output => @str_output)
pry_tester.rep(o)
@str_output.string.should =~ /:john/
end
it 'should work with multi-line input' do
o = Object.new
pry_tester = Pry.new(:input => InputTester.new("x = ", "1 + 4"), :output => @str_output)
pry_tester.rep(o)
@str_output.string.should =~ /5/
end
it 'should define a nested class under Hello and not on top-level or Pry' do
pry_tester = Pry.new(:input => InputTester.new("class Nested", "end"), :output => Pry::NullOutput)
pry_tester.rep(Hello)
Hello.const_defined?(:Nested).should == true
end
it 'should suppress output if input ends in a ";" and is an Exception object (single line)' do
o = Object.new
pry_tester = Pry.new(:input => InputTester.new("Exception.new;"), :output => @str_output)
pry_tester.rep(o)
@str_output.string.should == ""
end
it 'should suppress output if input ends in a ";" (single line)' do
o = Object.new
pry_tester = Pry.new(:input => InputTester.new("x = 5;"), :output => @str_output)
pry_tester.rep(o)
@str_output.string.should == ""
end
it 'should suppress output if input ends in a ";" (multi-line)' do
o = Object.new
pry_tester = Pry.new(:input => InputTester.new("def self.blah", ":test", "end;"), :output => @str_output)
pry_tester.rep(o)
@str_output.string.should == ""
end
it 'should be able to evaluate exceptions normally' do
o = Exception.new
was_called = false
pry_tester = Pry.new(:input => InputTester.new("self"),
:output => @str_output,
:exception_handler => proc { was_called = true })
pry_tester.rep(o)
was_called.should == false
end
it 'should notice when exceptions are raised' do
o = Exception.new
was_called = false
pry_tester = Pry.new(:input => InputTester.new("raise self"),
:output => @str_output,
:exception_handler => proc { was_called = true })
pry_tester.rep(o)
was_called.should == true
end
it 'should not try to catch intended exceptions' do
lambda { mock_pry("raise SystemExit") }.should.raise SystemExit
# SIGTERM
lambda { mock_pry("raise SignalException.new(15)") }.should.raise SignalException
end
end
describe "repl" do
describe "basic functionality" do
it 'should set an ivar on an object and exit the repl' do
input_strings = ["@x = 10", "exit-all"]
input = InputTester.new(*input_strings)
o = Object.new
pry_tester = Pry.start(o, :input => input, :output => Pry::NullOutput)
o.instance_variable_get(:@x).should == 10
end
end
describe "complete_expression?" do
it "should not mutate the input!" do
clean = "puts <<-FOO\nhi\nFOO\n"
a = clean.dup
Pry::Code.complete_expression?(a)
a.should == clean
end
end
describe "history arrays" do
it 'sets _ to the last result' do
res = []
input = InputTester.new *[":foo", "self << _", "42", "self << _"]
pry = Pry.new(:input => input, :output => Pry::NullOutput)
pry.repl(res)
res.should == [:foo, 42]
end
it 'sets out to an array with the result' do
res = {}
input = InputTester.new *[":foo", "42", "self[:res] = _out_"]
pry = Pry.new(:input => input, :output => Pry::NullOutput)
pry.repl(res)
res[:res].should.be.kind_of Pry::HistoryArray
res[:res][1..2].should == [:foo, 42]
end
it 'sets _in_ to an array with the entered lines' do
res = {}
input = InputTester.new *[":foo", "42", "self[:res] = _in_"]
pry = Pry.new(:input => input, :output => Pry::NullOutput)
pry.repl(res)
res[:res].should.be.kind_of Pry::HistoryArray
res[:res][1..2].should == [":foo\n", "42\n"]
end
it 'uses 100 as the size of _in_ and _out_' do
res = []
input = InputTester.new *["self << _out_.max_size << _in_.max_size"]
pry = Pry.new(:input => input, :output => Pry::NullOutput)
pry.repl(res)
res.should == [100, 100]
end
it 'can change the size of the history arrays' do
res = []
input = InputTester.new *["self << _out_.max_size << _in_.max_size"]
pry = Pry.new(:input => input, :output => Pry::NullOutput,
:memory_size => 1000)
pry.repl(res)
res.should == [1000, 1000]
end
it 'store exceptions' do
res = []
input = InputTester.new *["foo!","self << _in_[-1] << _out_[-1]"]
pry = Pry.new(:input => input, :output => Pry::NullOutput,
:memory_size => 1000)
pry.repl(res)
res.first.should == "foo!\n"
res.last.should.be.kind_of NoMethodError
end
end
describe "last_result" do
it "should be set to the most recent value" do
mock_pry("2", "_ + 82").should =~ /84/
end
it "should be set to the result of a command with :keep_retval" do
mock_pry("Pry::Commands.block_command '++', '', {:keep_retval => true} do |a| a.to_i + 1; end", '++ 86', '++ #{_}').should =~ /88/
end
it "should be preserved over an empty line" do
mock_pry("2 + 2", " ", "\t", " ", "_ + 92").should =~ /96/
end
it "should be preserved when evalling a command without :keep_retval" do
mock_pry("2 + 2", "ls -l", "_ + 96").should =~ /100/
end
end
describe "test loading rc files" do
before do
Pry.instance_variable_set(:@initial_session, true)
end
after do
Pry::RC_FILES.clear
Pry.config.should_load_rc = false
end
it "should run the rc file only once" do
Pry.config.should_load_rc = true
2.times { Pry::RC_FILES << File.expand_path("../testrc", __FILE__) }
Pry.start(self, :input => StringIO.new("exit-all\n"), :output => Pry::NullOutput)
TEST_RC.should == [0]
Pry.start(self, :input => StringIO.new("exit-all\n"), :output => Pry::NullOutput)
TEST_RC.should == [0]
Object.remove_const(:TEST_RC)
end
it "should not load the pryrc if it cannot expand ENV[HOME]" do
old_home = ENV['HOME']
old_rc = Pry.config.should_load_rc
ENV['HOME'] = nil
Pry.config.should_load_rc = true
lambda { Pry.start(self, :input => StringIO.new("exit-all\n"), :output => Pry::NullOutput) }.should.not.raise
ENV['HOME'] = old_home
Pry.config.should_load_rc = old_rc
end
it "should not run the rc file at all if Pry.config.should_load_rc is false" do
Pry.config.should_load_rc = false
Pry.start(self, :input => StringIO.new("exit-all\n"), :output => Pry::NullOutput)
Object.const_defined?(:TEST_RC).should == false
end
it "should not load the rc file if #repl method invoked" do
Pry.config.should_load_rc = true
Pry.new(:input => StringIO.new("exit-all\n"), :output => Pry::NullOutput).repl(self)
Object.const_defined?(:TEST_RC).should == false
Pry.config.should_load_rc = false
end
describe "that raise exceptions" do
before do
Pry::RC_FILES << File.expand_path("../testrcbad", __FILE__)
Pry.config.should_load_rc = true
putsed = nil
# YUCK! horrible hack to get round the fact that output is not configured
# at the point this message is printed.
(class << Pry; self; end).send(:define_method, :puts) { |str|
putsed = str
}
@doing_it = lambda{
Pry.start(self, :input => StringIO.new("Object::TEST_AFTER_RAISE=1\nexit-all\n"), :output => Pry::NullOutput)
putsed
}
end
after do
Object.remove_const(:TEST_BEFORE_RAISE)
Object.remove_const(:TEST_AFTER_RAISE)
(class << Pry; undef_method :puts; end)
end
it "should not raise exceptions" do
@doing_it.should.not.raise
end
it "should continue to run pry" do
@doing_it[]
Object.const_defined?(:TEST_BEFORE_RAISE).should == true
Object.const_defined?(:TEST_AFTER_RAISE).should == true
end
it "should output an error" do
@doing_it[].should =~ /Error loading #{File.expand_path("../testrcbad", __FILE__)}: messin with ya/
end
end
end
describe "nesting" do
after do
Pry.reset_defaults
Pry.color = false
end
it 'should nest properly' do
Pry.input = InputTester.new("cd 1", "cd 2", "cd 3", "\"nest:\#\{(_pry_.binding_stack.size - 1)\}\"", "exit-all")
Pry.output = @str_output
o = Object.new
pry_tester = o.pry
@str_output.string.should =~ /nest:3/
end
end
describe "defining methods" do
it 'should define a method on the singleton class of an object when performing "def meth;end" inside the object' do
[Object.new, {}, []].each do |val|
str_input = StringIO.new("def hello;end")
Pry.new(:input => str_input, :output => StringIO.new).rep(val)
val.methods(false).map(&:to_sym).include?(:hello).should == true
end
end
it 'should define an instance method on the module when performing "def meth;end" inside the module' do
str_input = StringIO.new("def hello;end")
hello = Module.new
Pry.new(:input => str_input, :output => StringIO.new).rep(hello)
hello.instance_methods(false).map(&:to_sym).include?(:hello).should == true
end
it 'should define an instance method on the class when performing "def meth;end" inside the class' do
str_input = StringIO.new("def hello;end")
hello = Class.new
Pry.new(:input => str_input, :output => StringIO.new).rep(hello)
hello.instance_methods(false).map(&:to_sym).include?(:hello).should == true
end
it 'should define a method on the class of an object when performing "def meth;end" inside an immediate value or Numeric' do
# should include float in here, but test fails for some reason
# on 1.8.7, no idea why!
[:test, 0, true, false, nil].each do |val|
str_input = StringIO.new("def hello;end")
Pry.new(:input => str_input, :output => StringIO.new).rep(val)
val.class.instance_methods(false).map(&:to_sym).include?(:hello).should == true
end
end
end
describe "Object#pry" do
after do
Pry.reset_defaults
Pry.color = false
end
it "should start a pry session on the receiver (first form)" do
Pry.input = InputTester.new("self", "exit-all")
str_output = StringIO.new
Pry.output = str_output
20.pry
str_output.string.should =~ /20/
end
it "should start a pry session on the receiver (second form)" do
Pry.input = InputTester.new("self", "exit-all")
str_output = StringIO.new
Pry.output = str_output
pry 20
str_output.string.should =~ /20/
end
it "should raise if more than two arguments are passed to Object#pry" do
lambda { pry(20, :quiet, :input => Readline) }.should.raise ArgumentError
end
end
describe "Pry.binding_for" do
it 'should return TOPLEVEL_BINDING if parameter self is main' do
_main_ = lambda { TOPLEVEL_BINDING.eval('self') }
Pry.binding_for(_main_.call).is_a?(Binding).should == true
Pry.binding_for(_main_.call).should == TOPLEVEL_BINDING
Pry.binding_for(_main_.call).should == Pry.binding_for(_main_.call)
end
end
end
end
describe 'setting custom options' do
it 'should not raise for unrecognized options' do
should.not.raise?(NoMethodError) {
instance = Pry.new(:custom_option => 'custom value')
}
end
end
end
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