Class: RegressionModel

Inherits:
Object
  • Object
show all
Defined in:
lib/regression_model.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model) ⇒ RegressionModel

Returns a new instance of RegressionModel.



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# File 'lib/regression_model.rb', line 5

def initialize(model)
  @model = model
end

Instance Attribute Details

#model ⇒ Object

Returns the value of attribute model.



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# File 'lib/regression_model.rb', line 3

def model
  @model
end

Instance Method Details

#belong_to_relations ⇒ Object 



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# File 'lib/regression_model.rb', line 9

def belong_to_relations
  @model.constantize.reflect_on_all_associations(:belongs_to).map(&:name).map do |relation|
    "it { is_expected.to belong_to :#{relation}}"
  end.join("\n\t") rescue nil
end

#database_columns ⇒ Object 



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# File 'lib/regression_model.rb', line 57

def database_columns
  @model.constantize.columns.map(&:name).map do |column|
    "it { is_expected.to have_db_column :#{column} }"
  end.join("\n\t") rescue nil
end

#database_indexes ⇒ Object 



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# File 'lib/regression_model.rb', line 63

def database_indexes
  ActiveRecord::Base.connection.indexes(@model.tableize.gsub("/", "_")).map do |indexes|
      "it { is_expected.to have_db_index #{indexes.columns}}"
  end.flatten.join("\n\t") rescue nil
end

#has_many_relations ⇒ Object 



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# File 'lib/regression_model.rb', line 21

def has_many_relations
  @model.constantize.reflect_on_all_associations(:has_many).map(&:name).map do |relation|
    "it { is_expected.to have_many :#{relation}}"
  end.join("\n\t") rescue nil
end

#has_one_relations ⇒ Object 



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# File 'lib/regression_model.rb', line 15

def has_one_relations
  @model.constantize.reflect_on_all_associations(:has_one).map(&:name).map do |relation|
    "it { is_expected.to have_one :#{relation}}"
  end.join("\n\t") rescue nil
end

#nested_attributes ⇒ Object 



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# File 'lib/regression_model.rb', line 49

def nested_attributes
  if @model.constantize.nested_attributes_options.present?
    @model.constantize.nested_attributes_options.keys.map do |key|
      "it { is_expected.to accept_nested_attributes_for :#{key} }"
    end.join("\n\t") rescue nil
  end
end

#validators ⇒ Object 



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# File 'lib/regression_model.rb', line 27

def validators
  validator_specs = []
  @model.constantize.validators.each do |validator|
    if validator.class.to_s == ActiveRecord::Validations::PresenceValidator.to_s
      validator.attributes.each do |attribute|
        validator_specs << "it { is_expected.to validate_presence_of :#{attribute} }"
      end
    end
    if validator.class.to_s == ActiveModel::Validations::LengthValidator.to_s
      validator.attributes.each do |attribute|
        minimum = validator.options[:minimum]
        maximum = validator.options[:maximum]
        validator_specs << "it { is_expected.to allow_value(Faker::Lorem.characters(#{minimum})).for :#{attribute} }" if minimum
        validator_specs << "it { is_expected.not_to allow_value(Faker::Lorem.characters(#{minimum - 1})).for :#{attribute} }" if minimum
        validator_specs << "it { is_expected.to allow_value(Faker::Lorem.characters(#{maximum})).for :#{attribute} }" if maximum
        validator_specs << "it { is_expected.not_to allow_value(Faker::Lorem.characters(#{maximum + 1})).for :#{attribute} }" if maximum
      end
    end
  end rescue []
  validator_specs.compact.uniq.join("\n\t")
end