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pry--pry/test/test_input_stack.rb
John Mair 4e3853ea33 now using 'retry' (in read loop) to switch input objects in input_stack
This is so we can make the switch to the new input object seemless on encountering EOFError in previous input object.
We also detect whether we are going to go into an infinite EOFError state (i.e if Pry.config.input generates EOFError) and so we break out of the REPL with an error message
and a throw(:breakout)
2011-09-16 03:27:19 +12:00

70 lines
2.4 KiB
Ruby

require 'helper'
describe "Pry#input_stack" do
it 'should accept :input_stack as a config option' do
stack = [StringIO.new("test")]
Pry.new(:input_stack => stack).input_stack.should == stack
end
it 'should use defaults from Pry.config' do
Pry.config.input_stack = [StringIO.new("exit")]
Pry.new.input_stack.should == Pry.config.input_stack
Pry.config.input_stack = []
end
it 'should read from all input objects on stack and exit session (usingn repl)' do
stack = [b = StringIO.new(":cloister\nexit\n"), c = StringIO.new(":baron\n")]
instance = Pry.new(:input => StringIO.new(":alex\n"),
:output => str_output = StringIO.new,
:input_stack => stack)
instance.repl
str_output.string.should =~ /:alex/
str_output.string.should =~ /:baron/
str_output.string.should =~ /:cloister/
end
it 'input objects should be popped off stack as they are used up' do
stack = [StringIO.new(":cloister\n"), StringIO.new(":baron\n")]
instance = Pry.new(:input => StringIO.new(":alex\n"),
:output => str_output = StringIO.new,
:input_stack => stack)
stack.size.should == 2
instance.rep
str_output.string.should =~ /:alex/
instance.rep
str_output.string.should =~ /:baron/
stack.size.should == 1
instance.rep
str_output.string.should =~ /:cloister/
stack.size.should == 0
end
it 'should revert to Pry.config.input when it runs out of input objects in input_stack' do
redirect_pry_io(StringIO.new(":rimbaud\nexit\n"), StringIO.new) do
stack = [StringIO.new(":cloister\n"), StringIO.new(":baron\n")]
instance = Pry.new(:input => StringIO.new(":alex\n"),
:output => str_output = StringIO.new,
:input_stack => stack)
instance.repl
str_output.string.should =~ /:alex/
str_output.string.should =~ /:baron/
str_output.string.should =~ /:cloister/
str_output.string.should =~ /:rimbaud/
end
end
it 'should display error and throw(:breakout) if at end of input after using up input_stack objects' do
str_output = StringIO.new
catch(:breakout) do
redirect_pry_io(StringIO.new(":rimbaud\n"), str_output) do
Pry.new(:input_stack => [StringIO.new(":a\n"), StringIO.new(":b\n")]).repl
end
end
str_output.string.should =~ /Error: Pry ran out of things to read/
end
end