Strange logging behaviour with rspec output capture

[sebbASF]

There is some interaction between rspec output capture and rspec testing, for example the following test fails:

require 'wunderbar'
describe "bug" do
it "test1" do
Wunderbar.info "test1" # disable this
expect {
# Wunderbar.logger = nil # or enable this
Wunderbar.warn "test1"
}.to output("_WARN test1\n").to_stderr
end
end

It succeeds if the info log is disabled or the logger is set to nil.

The workround is as above - reset the logger at the start of any expect block.