rastasheep · December 10, 2012 02:18 · Dec 10, 2012
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+## MiniTest::Spec
+
+use __must__ for positive expectations and __wont__ for negative expectations.
+
+
+* __must_be__ | list.size.must_be :==, 0
+* __must_be_close_to__ | subject.size.must_be_close_to 1,1
+* __must_be_empty__ | list.must_be_empty
+* __must_be_instance_of__ | list.must_be_instance_of Array
+* __must_be_kind_of__ | list.must_be_kind_of Enumerable
+* __must_be_nil__ | list.first.must_be_nil
+* __must_be_same_as__ | subject.must_be_same_as subject
+* __must_be_silent__ | proc { "no stdout or stderr" }.must_be_silent
+* __must_be_within_epsilon__ | subject.size.must_be_within_epsilon 1,1
+* __must_equal__ | subject.size.must_equal 2
+* __must_include__ | subject.must_include "skinny jeans"
+* __must_match__ | subject.first.must_match /silly/
+* __must_output proc__  |{ print "#{subject.size}!" }.must_output "2!"
+* __must_respond_to__ | subject.must_respond_to :count
+* __must_raise__ | proc { subject.foo }.must_raise NoMethodError
+* __must_send__ | subject.must_send [subject, :values_at, 0]
+* __must_throw__ | proc { throw :done if subject.any? }.must_throw :done
+
+```ruby
+require 'minitest/autorun'
+
+describe Hipster, "Demonstration of MiniTest" do
+  before do
+    @hipster = Hipster.new
+  end
+
+  after do
+    @hipster.destroy!
+  end
+
+  subject do
+    Array.new.tap do |attributes|
+      attributes << "silly hats"
+      attributes << "skinny jeans"
+    end
+  end
+
+  let(:list) { Array.new }
+
+  describe "when asked about the font" do
+    it "should be helvetica" do
+      @hipster.preferred_font.must_equal "helvetica"
+    end
+  end
+
+  describe "when asked about mainstream" do
+    it "won't be mainstream" do
+      @hipster.mainstream?.wont_equal true
+    end
+  end
+end
+```
+
+## MiniTest::Unit::TestCase
+
+use __assert__ for positive assertions and __refute__ for negative assertions
+
+* __assert__ | assert @subject.any?, "empty subjects"
+* __assert_block__ | assert_block { @subject.any? }
+* __assert_empty__ | assert_empty @list
+* __assert_equal__ | assert_equal 2, @subject.size
+* __assert_in_delta__ | assert_in_delta @subject.size, 1,1
+* __assert_in_epsilon__ | assert_in_epsilon @subject.size, 1, 1
+* __assert_includes__ | assert_includes @subject, "skinny jeans"
+* __assert_instance_of__ | assert_instance_of Array, @list
+* __assert_kind_of__ | assert_kind_of Enumerable, @list
+* __assert_match__ | assert_match @subject.first, /silly/
+* __assert_nil__ | assert_nil @list.first
+* __assert_operator__ | assert_operator @list.size, :== , 0
+* __assert_output__ | assert_output("Size: 2") { print "Size: #{@subject.size}"}
+* __assert_raises__ | assert_raises(NoMethodError) { @subject.foo }
+* __assert_respond_to__ | assert_respond_to @subject, :count
+* __assert_same__ | assert_same @subject, @subject, "It's the same object silly"
+* __assert_send__ | assert_send [@subject, :values_at, 0]
+* __assert_silent__ | assert_silent { "no stdout or stderr" }
+* __assert_throws__ | assert_throws(:error,'is empty') {throw :error if @subject.any?}
+
+```ruby
+require 'minitest/autorun'
+
+class TestHipster < MiniTest::Unit::TestCase
+  def setup
+    @hipster = Hipster.new
+    @list    = Array.new
+    @subject = ["silly hats", "skinny jeans"]
+  end
+
+  def teardown
+    @hipster.destroy!
+  end
+
+  def test_for_helvetica_font
+    assert_equal "helvetica!", @hipster.preferred_font
+  end
+
+  def test_not_mainstream
+    refute @hipster.mainstream?
+  end
+end
+```
+
+## MiniTest::Mock
+
+there two essential methods at our disposal: __expect__ and __verify__
+
+```ruby
+require 'minitest/autorun'
+
+class Twipster
+  def initialize(twitter)
+    # A Ruby wrapper for the Twitter API
+    @twitter = twitter
+  end
+
+  def submit(tweet)
+    @twitter.update("#{tweet} #lolhipster")
+  end
+end
+
+describe Twipster, "Make every tweet a hipster tweet." do
+  before do
+    @twitter  = MiniTest::Mock.new
+    @twipster = Twipster.new(@twitter)
+  end
+
+  it "should append a #lolhipster hashtag and update Twitter with our status" do
+    tweet = "Skyrim? Too mainstream."
+    @twitter.expect :update, true, ["#{tweet} #lolhipster"]
+    @twipster.submit(tweet)
+    assert @twitter.verify # verifies tweet and hashtag was passed to `@twitter.update`
+  end
+end
+```
+
+___
+
+###### Credits
+
+This is slightly __modified__ version of [@mattsears](https://twitter.com/mattsears)'s article <http://mattsears.com/articles/2011/12/10/minitest-quick-reference/> just in case,if some servers stop working :)
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