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pry--pry/spec/pry_output_spec.rb

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require_relative 'helper'
describe Pry do
describe "output failsafe" do
after do
Pry.config.print = Pry::DEFAULT_PRINT
end
it "should catch serialization exceptions" do
Pry.config.print = lambda { |*a| raise "catch-22" }
expect { mock_pry("1") }.to_not raise_error
end
it "should display serialization exceptions" do
Pry.config.print = lambda { |*a| raise "catch-22" }
mock_pry("1").should =~ /\(pry\) output error: #<RuntimeError: catch-22>/
end
it "should catch errors serializing exceptions" do
Pry.config.print = lambda do |*a|
raise Exception.new("catch-22").tap{ |e| class << e; def inspect; raise e; end; end }
end
mock_pry("1").should =~ /\(pry\) output error: failed to show result/
end
end
describe "DEFAULT_PRINT" do
it "should output the right thing" do
mock_pry("[1]").should =~ /^=> \[1\]/
end
it "should include the =>" do
pry = Pry.new
accumulator = StringIO.new
pry.config.output = accumulator
pry.config.print.call(accumulator, [1], pry)
accumulator.string.should == "=> \[1\]\n"
end
it "should not be phased by un-inspectable things" do
mock_pry("class NastyClass; undef pretty_inspect; end", "NastyClass.new").should =~ /#<.*NastyClass:0x.*?>/
end
it "doesn't leak colour for object literals" do
mock_pry("Object.new").should =~ /=> #<Object:0x[a-z0-9]+>\n/
end
end
describe "output_prefix" do
it "should be able to change output_prefix" do
pry = Pry.new
accumulator = StringIO.new
pry.config.output = accumulator
pry.config.output_prefix = "-> "
pry.config.print.call(accumulator, [1], pry)
accumulator.string.should == "-> \[1\]\n"
end
end
describe "color" do
before do
Pry.config.color = true
end
after do
Pry.config.color = false
end
it "should colorize strings as though they were ruby" do
pry = Pry.new
accumulator = StringIO.new
colorized = CodeRay.scan("[1]", :ruby).term
pry.config.output = accumulator
pry.config.print.call(accumulator, [1], pry)
accumulator.string.should == "=> #{colorized}\n"
end
it "should not colorize strings that already include color" do
pry = Pry.new
f = Object.new
def f.inspect
"\e[1;31mFoo\e[0m"
end
accumulator = StringIO.new
pry.config.output = accumulator
pry.config.print.call(accumulator, f, pry)
# We add an extra \e[0m to prevent color leak
accumulator.string.should == "=> \e[1;31mFoo\e[0m\e[0m\n"
end
end
describe "output suppression" do
before do
@t = pry_tester
end
it "should normally output the result" do
mock_pry("1 + 2").should == "=> 3\n"
end
it "should not output anything if the input ends with a semicolon" do
mock_pry("1 + 2;").should == ""
end
it "should output something if the input ends with a comment" do
mock_pry("1 + 2 # basic addition").should == "=> 3\n"
end
it "should not output something if the input is only a comment" do
mock_pry("# basic addition").should == ""
end
end
end