Top Level Namespace

Defined Under Namespace

Modules: DatabaseValidations

Instance Method Summary collapse

Instance Method Details

#validate_db_uniqueness_of ⇒ Object

Matches when model or instance of model validates database uniqueness of some field.

Modifiers:

  • ‘with_message(message)` – specifies a message of the error;

  • ‘scoped_to(scope)` – specifies a scope for the validator;

  • ‘with_where(where)` – specifies a where condition for the validator;

  • ‘with_index(index_name)` – specifies an index name for the validator;

Example:

“‘ruby it { expect(Model).to validate_db_uniqueness_of(:field) } “`

is the same as

“‘ruby it { expect(Model.new).to validate_db_uniqueness_of(:field) } “`



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# File 'lib/database_validations/rspec/uniqueness_validator_matcher.rb', line 22

RSpec::Matchers.define :validate_db_uniqueness_of do |field|
  chain(:with_message) do |message|
    @message = message
  end

  chain(:scoped_to) do |*scope|
    @scope = scope.flatten
  end

  chain(:with_where) do |where|
    @where = where
  end

  chain(:with_index) do |index_name|
    @index_name = index_name
  end

  match do |object|
    @validators = []

    model = object.is_a?(Class) ? object : object.class

    DatabaseValidations::Helpers.each_validator(model) do |validator|
      @validators << {
        field:      validator.field,
        scope:      validator.scope,
        where:      validator.where_clause,
        message:    validator.message,
        index_name: validator.index_name
      }
    end

    @validators.include?(field: field, scope: Array.wrap(@scope), where: @where, message: @message, index_name: @index_name)
  end

  description do
    desc = "validate database uniqueness of #{field}. "
    desc += "With options - " if @message || @scope || @where
    desc += "message: '#{@message}'; " if @message
    desc += "scope: #{@scope}; " if @scope
    desc += "where: '#{@where}'; " if @where
    desc += "index_name: '#{index_name}'." if @index_name
    desc
  end

  failure_message do
    <<-TEXT
      There is no such database uniqueness validator. 
      Available validators are: #{@validators}.
    TEXT
  end
end