ruby で unit test

ruby で unit test

環境

$ ruby -v
ruby 1.9.3p385 (2013-02-06 revision 39114) [x86_64-linux]

すごくシンプルなテスト

simpleTest.rb

require 'test/unit'

class TC_simple < Test::Unit::TestCase

    def test_equal
        assert_equal(3, 3)
    end

    def test_not_equal
        assert_not_equal(3, 4)
    end

    def test_same
        assert_same(5, 5)
    end

end

実行結果

$ ruby simpleTest.rb 
Run options: 

# Running tests:

...

Finished tests in 0.000483s, 6212.5821 tests/s, 6212.5821 assertions/s.

3 tests, 3 assertions, 0 failures, 0 errors, 0 skips

別ファイルにある関数に対するunittestのサンプル

maxNum.rb

def maxNum(x, y)
    if(x > y)
        return x
    else
        return y
    end
end

test.rb

require "test/unit"
require "./maxNum"

class TC_MaxNum < Test::Unit::TestCase

    def test_maxNum
        assert_equal(3, maxNum(2, 3))
    end
end

実行結果

$ ruby test.rb 
Run options: 

# Running tests:

.

Finished tests in 0.001074s, 931.2175 tests/s, 931.2175 assertions/s.

1 tests, 1 assertions, 0 failures, 0 errors, 0 skips

別ファイルにあるクラスのメソッドに対するunittestのサンプル

maxNum.rb

class MaxNum
    def maxNum(x, y)
        if(x > y)
            return x
        else
            return y
        end
    end
end

test.rb

require "test/unit"
require "./maxNum"

class TC_MaxNum < Test::Unit::TestCase

    def setup
        @obj = MaxNum.new
    end

    def test_maxNum
        assert_equal(3, @obj.maxNum(2, 3))
    end
end

実行結果

$ ruby test.rb 
Run options: 

# Running tests:

.

Finished tests in 0.001399s, 715.0457 tests/s, 715.0457 assertions/s.

1 tests, 1 assertions, 0 failures, 0 errors, 0 skips

注意

テストを実行するメソッドの名前は test で始める

参考

test/unitライブラリ
http://doc.ruby-lang.org/ja/1.9.3/library/test=2funit.html