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require 'spec_helper'
require 'mspec/expectations/expectations'
require 'mspec/matchers'
describe OutputMatcher do
it "matches when executing the proc results in the expected output to $stdout" do
proc = Proc.new { puts "bang!" }
OutputMatcher.new("bang!\n", nil).matches?(proc).should == true
OutputMatcher.new("pop", nil).matches?(proc).should == false
OutputMatcher.new(/bang/, nil).matches?(proc).should == true
OutputMatcher.new(/po/, nil).matches?(proc).should == false
end
it "matches when executing the proc results in the expected output to $stderr" do
proc = Proc.new { $stderr.write "boom!" }
OutputMatcher.new(nil, "boom!").matches?(proc).should == true
OutputMatcher.new(nil, "fizzle").matches?(proc).should == false
OutputMatcher.new(nil, /boom/).matches?(proc).should == true
OutputMatcher.new(nil, /fizzl/).matches?(proc).should == false
end
it "provides a useful failure message" do
proc = Proc.new { print "unexpected"; $stderr.print "unerror" }
matcher = OutputMatcher.new("expected", "error")
matcher.matches?(proc)
matcher.failure_message.should ==
["Expected:\n $stdout: \"expected\"\n $stderr: \"error\"\n",
" got:\n $stdout: \"unexpected\"\n $stderr: \"unerror\"\n"]
matcher = OutputMatcher.new("expected", nil)
matcher.matches?(proc)
matcher.failure_message.should ==
["Expected:\n $stdout: \"expected\"\n",
" got:\n $stdout: \"unexpected\"\n"]
matcher = OutputMatcher.new(nil, "error")
matcher.matches?(proc)
matcher.failure_message.should ==
["Expected:\n $stderr: \"error\"\n",
" got:\n $stderr: \"unerror\"\n"]
matcher = OutputMatcher.new(/base/, nil)
matcher.matches?(proc)
matcher.failure_message.should ==
["Expected:\n $stdout: /base/\n",
" got:\n $stdout: \"unexpected\"\n"]
matcher = OutputMatcher.new(nil, /octave/)
matcher.matches?(proc)
matcher.failure_message.should ==
["Expected:\n $stderr: /octave/\n",
" got:\n $stderr: \"unerror\"\n"]
end
it "provides a useful negative failure message" do
proc = Proc.new { puts "expected"; $stderr.puts "error" }
matcher = OutputMatcher.new("expected", "error")
matcher.matches?(proc)
matcher.negative_failure_message.should ==
["Expected output not to be:\n", " $stdout: \"expected\"\n $stderr: \"error\"\n"]
matcher = OutputMatcher.new("expected", nil)
matcher.matches?(proc)
matcher.negative_failure_message.should ==
["Expected output not to be:\n", " $stdout: \"expected\"\n"]
matcher = OutputMatcher.new(nil, "error")
matcher.matches?(proc)
matcher.negative_failure_message.should ==
["Expected output not to be:\n", " $stderr: \"error\"\n"]
matcher = OutputMatcher.new(/expect/, nil)
matcher.matches?(proc)
matcher.negative_failure_message.should ==
["Expected output not to be:\n", " $stdout: \"expected\"\n"]
matcher = OutputMatcher.new(nil, /err/)
matcher.matches?(proc)
matcher.negative_failure_message.should ==
["Expected output not to be:\n", " $stderr: \"error\"\n"]
end
end
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