Class: Minitest::AssertIncludesMessage

Inherits:
Object
  • Object
show all
Includes:
SuperdiffPlugin::Helpers
Defined in:
lib/minitest/superdiff_plugin.rb

Instance Method Summary collapse

Methods included from SuperdiffPlugin::Helpers

#inspect_styled

Constructor Details

#initialize(collection:, item:) ⇒ AssertIncludesMessage

Returns a new instance of AssertIncludesMessage.

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# File 'lib/minitest/superdiff_plugin.rb', line 50

def initialize(collection:, item:)
  @collection = collection
  @item = item
end

Instance Method Details

#basic_diff(expected, actual) ⇒ Object

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# File 'lib/minitest/superdiff_plugin.rb', line 90

def basic_diff(expected, actual)
  content = SuperDiff.diff(expected, actual)
  "\nDiff:\n\n#{content}"
end

#optional_diff ⇒ Object

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# File 'lib/minitest/superdiff_plugin.rb', line 82

def optional_diff
  case @collection
  when Array, Set
    collection_with_item = @collection + [@item].flatten(1)
    basic_diff(@collection, collection_with_item)
  end
end

#to_s ⇒ Object

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# File 'lib/minitest/superdiff_plugin.rb', line 55

def to_s
  return @to_s if defined?(@to_s)

  content = if (diff = optional_diff)
    collection = inspect_styled(@collection, :expected)
    item = inspect_styled(@item, :actual)

    <<~OUTPUT.strip
      Expected #{collection} to include #{item}, but it did not.

      #{diff}
    OUTPUT
  else
    expected = inspect_styled(@collection, :expected, prefix: "  Collection: ")
    actual = inspect_styled(@item, :actual, prefix: "Missing item: ")

    <<~OUTPUT.strip
      Expected collection to include item but it did not.

      #{expected}
      #{actual}
    OUTPUT
  end

  @to_s ||= content
end