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Versions: 31
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Contents
Feature: Fetching contracted function type
You can use `functype(name)` method for that:
```ruby
functype(:add) # => "add :: Num, Num => Num"
```
Background:
Given a file named "example.rb" with:
"""ruby
require "contracts"
C = Contracts
class Example
include Contracts::Core
Contract C::Num, C::Num => C::Num
def add(a, b)
a + b
end
Contract String => String
def self.greeting(name)
"Hello, #{name}"
end
class << self
Contract C::Num => C::Num
def increment(number)
number + 1
end
end
end
"""
Scenario: functype on instance method
Given a file named "instance_method_functype.rb" with:
"""ruby
require "./example"
puts Example.new.functype(:add)
"""
When I run `ruby instance_method_functype.rb`
Then the output should contain:
"""
add :: Num, Num => Num
"""
Scenario: functype on class method
Given a file named "class_method_functype.rb" with:
"""ruby
require "./example"
puts Example.functype(:greeting)
"""
When I run `ruby class_method_functype.rb`
Then the output should contain:
"""
greeting :: String => String
"""
Scenario: functype on singleton method
Given a file named "singleton_method_functype.rb" with:
"""ruby
require "./example"
puts Example.functype(:increment)
"""
When I run `ruby singleton_method_functype.rb`
Then the output should contain:
"""
increment :: Num => Num
"""
Version data entries
31 entries across 21 versions & 5 rubygems