Module: Test::Unit::Data::ClassMethods

### Home Classes Methods

### In Files

- lib/test/unit/data.rb

### Namespace

- CLASS Test::Unit::Data::ClassMethods::Loader

### Methods

- #data
- #load_data

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# Test::Unit::Data::ClassMethods

### Public Instance Methods

data(*arguments, &block) click to toggle source

This method provides Data-Driven-Test functionality.

Define test data in the test code.

@overload data(label, data)

    @param [String] label specify test case name.
    @param data specify test data.

    @example data(label, data)
      data("empty string", [true, ""])
      data("plain string", [false, "hello"])
      def test_empty?(data)
        expected, target = data
        assert_equal(expected, target.empty?)
      end

@overload data(data_set)

    @param [Hash] data_set specify test data as a Hash that
      key is test label and value is test data.

    @example data(data_set)
      data("empty string" => [true, ""],
           "plain string" => [false, "hello"])
      def test_empty?(data)
        expected, target = data
        assert_equal(expected, target.empty?)
      end

@overload data(&block)

    @yieldreturn [Hash] return test data set as a Hash that
      key is test label and value is test data.

    @example data(&block)
      data do
        data_set = {}
        data_set["empty string"] = [true, ""]
        data_set["plain string"] = [false, "hello"]
        data_set
      end
      def test_empty?(data)
        expected, target = data
        assert_equal(expected, target.empty?)
      end

    # File lib/test/unit/data.rb, line 55
    def data(*arguments, &block)
      n_arguments = arguments.size
      case n_arguments
      when 0
        raise ArgumentError, "no block is given" unless block_given?
        data_set = block
      when 1
        data_set = arguments[0]
      when 2
        data_set = {arguments[0] => arguments[1]}
      else
        message = "wrong number arguments(#{n_arguments} for 1..2)"
        raise ArgumentError, message
      end
      current_data = current_attribute(:data)[:value] || []
      attribute(:data, current_data + [data_set])
    end

load_data(file_name) click to toggle source

This method provides Data-Driven-Test functionality.

Load test data from the file. This is shorthand to load test data from file. If you want to load complex file, you can use {data} with block.

@param [String] file_name full path to test data file.

    File format is automatically detected from filename extension.

@raise [ArgumentError] if `file_name` is not supported file format. @see Loader#load

@example Load data from CSV file

    load_data("/path/to/test-data.csv")
    def test_empty?(data)
      assert_equal(data["expected"], data["target"].empty?)
    end

    # File lib/test/unit/data.rb, line 90
    def load_data(file_name)
      loader = Loader.new(self)
      loader.load(file_name)
    end

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