Class: RSpec::SleepingKingStudios::Matchers::Core::HaveChangedMatcher

Parent Namespace

RSpec::SleepingKingStudios::Matchers::Core

Inherited Classes

RSpec::SleepingKingStudios::Matchers::BaseMatcher > Object

Included Modules

RSpec::Matchers::Composable

Defined In

lib/rspec/sleeping_king_studios/matchers/core/have_changed_matcher.rb

Table Of Contents

• Overview
  • Since
• Constants
  • DEFAULT_EXPECTED_ITEMS
• Constructor
• Instance Attributes
  • actual
• Instance Methods
  • by
  • description
  • does_not_match?
  • failure_message
  • failure_message_when_negated
  • from
  • initialize
  • matches?
  • to

Overview

Matcher for testing the change in a value.

Since

• 2.4.0

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Constants

DEFAULT_EXPECTED_ITEMS

= Object.new

Inherited From

RSpec::SleepingKingStudios::Matchers::Description

Since

• 2.2.0

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Constructor

#initialize => HaveChangedMatcher

Returns

• (HaveChangedMatcher) — a new instance of HaveChangedMatcher

Since

• 2.4.0

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Instance Attributes

#actual => Object (readonly)

Inherited From

RSpec::SleepingKingStudios::Matchers::BaseMatcher

Since

• 1.0.0

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Instance Methods

#by(difference) => HaveChangedMatcher

Creates an difference expectation between the initial and current values. The matcher will subtract the current value from the initial value and compare the result with the specified value.

Parameters

• difference (Object) — The expected difference between the initial value and the current value.

Returns

• (HaveChangedMatcher) — the matcher instance.

Since

• 2.4.0

#description => Object

Since

• 2.4.0

#does_not_match?(actual) => Boolean

Inverse of #matches? method.

Parameters

• actual (Object) — the object to test against the matcher

Returns

• (Boolean) — false if the object matches, otherwise true

See Also

• #matches?

Since

• 2.4.0

#failure_message => Object

Message for when the object does not match, but was expected to. Make sure to always call #matches? first to set up the matcher state.

Since

• 2.4.0

#failure_message_when_negated => Object

Message for when the object matches, but was expected not to. Make sure to always call #matches? first to set up the matcher state.

Since

• 2.4.0

#from(value) => HaveChangedMatcher

Creates an expectation on the initial value. The matcher will compare the initial value from the value spy with the specified value.

Parameters

• value (Object) — The expected initial value.

Returns

• (HaveChangedMatcher) — the matcher instance.

Since

• 2.4.0

#matches?(actual) => Boolean

Checks if the observed value has changed.

Parameters

• actual (RSpec::SleepingKingStudios::Support::ValueSpy) — The observed value.

Returns

• (Boolean) — True if the observed value has changed, otherwise false.

Raises

• () — ArgumentError unless the actual object is a value spy.

Since

• 2.4.0

#to(value) => HaveChangedMatcher

Creates an expectation on the current value. The matcher will compare the current value from the value spy with the specified value.

Parameters

• value (Object) — The expected current value.

Returns

• (HaveChangedMatcher) — the matcher instance.

Since

• 2.4.0

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