path: root/spec/README
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authoreregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-05-07 12:17:21 +0000
committereregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-05-07 12:17:21 +0000
commite7ec88a41a7cf943d4c0f1150ef79c0961770974 (patch)
treed97b5cbe41967bbb910df319b67f78a05571068c /spec/README
parent7f9cd73302970a970bbc563bda402c6b2b00ef4f (diff)
Rename spec/README to spec/
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-# ruby/spec
-ruby/spec ( is
-a test suite for the Ruby language.
-Once a month, @eregon merges the in-tree copy under spec/rubyspec
-with the upstream repository, preserving the commits and history.
-The same happens for other implementations such as JRuby and TruffleRuby.
-Feel welcome to modify the in-tree spec/rubyspec.
-This is the purpose of the in-tree copy,
-to facilitate contributions to ruby/spec for MRI developers.
-New features, additional tests for existing features and
-regressions tests are all welcome in ruby/spec.
-There is very little behavior that is implementation-specific,
-as in the end user programs tend to rely on every behavior MRI exhibits.
-In other words: If adding a spec might reveal a bug in
-another implementation, then it is worth adding it.
-Currently, the only module which is MRI-specific is `RubyVM`.
-## Runing ruby/spec
-To run all specs:
-make test-rubyspec
-Extra arguments can be added via `MSPECOPT`.
-For instance, to show the help:
-make test-rubyspec MSPECOPT=-h
-You can also run the specs in parallel, which is currently experimental.
-It takes around 10s instead of 60s on a quad-core laptop.
-make test-rubyspec MSPECOPT=-j
-To run a specific test, add its path to the command:
-make test-rubyspec MSPECOPT=spec/rubyspec/language/for_spec.rb
-If ruby trunk is your current `ruby` in `$PATH`, you can also run `mspec` directly:
-# change ruby to trunk
-ruby -v # => trunk
-spec/mspec/bin/mspec spec/rubyspec/language/for_spec.rb
-## ruby/spec and test/
-The main difference between a "spec" under spec/rubyspec and
-a test under test/ is that specs are documenting what they test.
-This is extremely valuable when reading these tests, as it
-helps to quickly understand what specific behavior is tested,
-and how a method should behave. Basic English is fine for spec descriptions.
-Specs also tend to have few expectations (assertions) per spec,
-as they specify one aspect of the behavior and not everything at once.
-Beyond that, the syntax is slightly different but it does the same thing:
-`assert_equal 3, 1+2` is just `(1+2).should == 3`.
-describe "The for expression" do
- it "iterates over an Enumerable passing each element to the block" do
- j = 0
- for i in 1..3
- j += i
- end
- j.should == 6
- end
-For more details, see spec/rubyspec/