Test failure: $ LANG=C rspec spec/shell/basic_spec.rb

[voxik]

Running the test suite, I observe following error.

$ LANG=C rspec spec/shell/basic_spec.rb 
...................F.............

Failures:

  1) Thor::Shell::Basic#print_table uses maximum terminal width
     Failure/Error: TABLE
     ArgumentError:
       invalid byte sequence in US-ASCII
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/expectations/fail_with.rb:47:in `block in any_multiline_strings?'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/expectations/fail_with.rb:47:in `each'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/expectations/fail_with.rb:47:in `any?'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/expectations/fail_with.rb:47:in `any_multiline_strings?'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/expectations/fail_with.rb:24:in `fail_with'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/matchers/operator_matcher.rb:47:in `fail_with_message'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/matchers/operator_matcher.rb:69:in `__delegate_operator'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/matchers/operator_matcher.rb:59:in `eval_match'
     # /usr/share/gems/gems/rspec-expectations-2.11.3/lib/rspec/matchers/operator_matcher.rb:28:in `block in use_custom_matcher_or_delegate'
     # /builddir/build/BUILD/rubygem-thor-0.16.0/usr/share/gems/gems/thor-0.16.0/spec/shell/basic_spec.rb:172:in `block (3 levels) in <top (required)>'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:113:in `instance_eval'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:113:in `block in run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:253:in `with_around_each_hooks'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:110:in `run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:378:in `block in run_examples'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:374:in `map'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:374:in `run_examples'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:360:in `run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `block in run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `block in run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
     # /usr/share/gems/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'

Finished in 0.03561 seconds
33 examples, 1 failure

Failed examples:

rspec ./spec/shell/basic_spec.rb:161 # Thor::Shell::Basic#print_table uses maximum terminal width

Randomized with seed 53972

The problem is, that the STDOUT has US-ASCII encoding and you output UTF-8 string into it. Something like content.force_encoding "UTF-8" fixes this issue, nevertheless, is that right to output UTF-8 encoded string into US-ASCII encoded STDOUT?