Class: Matchi::Matchers::RaiseException::Matcher

Inherits:

Object

• Object
• Matchi::Matchers::RaiseException::Matcher

Includes:

Matchi::MatchersBase

Defined in:

lib/matchi/matchers/raise_exception.rb

Overview

The matcher.

Instance Method Summary

• #initialize(expected) ⇒ Matcher constructor

  Initialize the matcher with a descendant of class Exception.

• #matches? ⇒ Boolean

  Boolean comparison between the actual value and the expected value.

Methods included from Matchi::MatchersBase

#to_h, #to_s

Constructor Details

#initialize(expected) ⇒ Matcher

Initialize the matcher with a descendant of class Exception.

Examples:

Divided by 0 matcher.

Matchi::Matchers::RaiseException::Matcher.new(ZeroDivisionError)

Parameters:

• expected (.exception) —

  The class of the expected exception.

# File 'lib/matchi/matchers/raise_exception.rb', line 20

def initialize(expected)
  @expected = expected
end

Instance Method Details

#matches? ⇒ Boolean

Boolean comparison between the actual value and the expected value.

Examples:

Is it raising NameError?

matcher = Matchi::Matchers::RaiseException::Matcher.new(NameError)
matcher.matches? { Boom } # => true

Yield Returns:

• (#object_id) —

  The actual value to compare to the expected one.

Returns:

• (Boolean) —

  Comparison between actual and expected values.

# File 'lib/matchi/matchers/raise_exception.rb', line 34

def matches?(*, **)
  yield
rescue @expected => _e
  true
else
  false
end