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ruby--ruby/spec
Jeremy Evans 346301e232 Add rb_category_warn{,ing} for warning messages with categories
This adds the following C-API functions that can be used to emit
warnings with categories included:

```c
void rb_category_warn(const char *, const char*, ...)
void rb_category_warning(const char*, const char*, ...)
```

Internally in error.c, there is an rb_warn_category function
that will call Warning.warn with the string and the category
keyword if it doesn't have an arity of 1, and will call
Warning.warn with just the string if it has an arity of 1.
This refactors the rb_warn_deprecated{,_to_remove} functions
to use rb_warn_category.

This makes Kernel#warn accept a category keyword and pass it
to Warning.warn, so that Ruby methods can more easily emit
warnings with categories.  rb_warn_category makes sure that
the passed category is a already defined category symbol
before calling Warning.warn.

The only currently defined warning category is :deprecated,
since that is what is already used.  More categories can be
added in later commits.
2020-09-28 08:38:06 -07:00
..
bundler [rubygems/rubygems] Move comment below shebang in bin/console template 2020-09-28 14:54:22 +09:00
mspec Update to ruby/mspec@53a6e3e 2020-08-28 20:26:00 +02:00
ruby Add rb_category_warn{,ing} for warning messages with categories 2020-09-28 08:38:06 -07:00
default.mspec
README.md Run specs against the latest release of 2.4 2020-01-28 18:12:24 +01:00

spec/bundler

spec/bundler is rspec examples for bundler library(lib/bundler.rb, lib/bundler/*).

Running spec/bundler

To run rspec for bundler:

make test-bundler

spec/ruby

ruby/spec (https://github.com/ruby/spec/) is a test suite for the Ruby language.

Once a month, @eregon merges the in-tree copy under spec/ruby 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/ruby. 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.

Changing behavior and versions guards

Version guards (ruby_version_is) must be added for new features or features which change behavior or are removed. This is necessary for other Ruby implementations to still be able to run the specs and contribute new specs.

For example, change:

describe "Some spec" do
  it "some example" do
    # Old behavior for Ruby < 2.7
  end
end

to:

describe "Some spec" do
  ruby_version_is ""..."2.7" do
    it "some example" do
      # Old behavior for Ruby < 2.7
    end
  end

  ruby_version_is "2.7" do
    it "some example" do
      # New behavior for Ruby >= 2.7
    end
  end
end

See spec/ruby/CONTRIBUTING.md for more documentation about guards.

To verify specs are compatible with older Ruby versions:

cd spec/ruby
$RUBY_MANAGER use 2.4.9
../mspec/bin/mspec -j

Running ruby/spec

To run all specs:

make test-spec

Extra arguments can be added via MSPECOPT. For instance, to show the help:

make test-spec 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-spec MSPECOPT=-j

To run a specific test, add its path to the command:

make test-spec MSPECOPT=spec/ruby/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/ruby/language/for_spec.rb

ruby/spec and test/

The main difference between a "spec" under spec/ruby/ 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.

Example:

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
end

For more details, see spec/ruby/CONTRIBUTING.md.