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pry--pry/spec/control_d_handler_spec.rb
Kyrylo Silin c7b28efc24 Fix ^D press in nested REPLs
The interesting moment is that `cd -` is still a bit dorky.

  [1] pry(main)> _pry_.repl :a
  [2] pry(:a):1> _pry_.repl :b
  [3] pry(:b):2> cd -
  [4] pry(:b):2> cd -
  [5] pry(:b):2>

The problem is that `_pry_.repl` pushes a new binding onto
`binding_stack`, however, it knows nothing about `old_stack`.

Well, there is a workaround for this.

  [1] pry(main)> _pry_.repl :a
  [2] pry(:a):1> ^D
  [3] pry(main)> cd -
  [4] pry(:a):1> cd -
  [5] pry(main)>

Fix "undefined method `old_stack=' for nil:NilClass" error in this
commit, when you press ^D in a nested REPL. Add a test case for this.
Rewrite some comments and old Control-D units tests (so they use newer
test API).

Signed-off-by: Kyrylo Silin <kyrylosilin@gmail.com>
2012-12-15 03:23:24 +02:00

58 lines
1.5 KiB
Ruby

require 'helper'
describe Pry::DEFAULT_CONTROL_D_HANDLER do
describe "control-d press" do
before do
# Simulates a ^D press.
@control_d = "Pry::DEFAULT_CONTROL_D_HANDLER.call('', _pry_)"
end
describe "in an expression" do
it "should clear out passed string" do
str = 'hello world'
Pry::DEFAULT_CONTROL_D_HANDLER.call(str, nil)
str.should == ''
end
end
describe "at top-level session" do
it "breaks out of a REPL" do
pry_tester(0).simulate_repl do |t|
t.eval @control_d
end.should == nil
end
end
describe "in a nested session" do
it "pops last binding from the binding stack" do
pry_tester(0).simulate_repl { |t|
t.eval 'cd :foo'
t.eval('_pry_.binding_stack.size').should == 2
t.eval(@control_d)
t.eval('_pry_.binding_stack.size').should == 1
t.eval 'exit-all'
}
end
it "breaks out of the parent session" do
pry_tester(:outer).simulate_repl do |o|
o.context = :inner
o.simulate_repl { |i|
i.eval('_pry_.current_context.eval("self")').should == :inner
i.eval('_pry_.binding_stack.size').should == 2
i.eval @control_d
i.eval('_pry_.binding_stack.size').should == 1
i.eval('_pry_.current_context.eval("self")').should == :outer
i.eval 'throw :breakout'
}
o.eval 'exit-all'
end
end
end
end
end