Added assert_select* for CSS selector-based testing (deprecates assert_tag) #5936 [assaf.arkin@gmail.com]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4929 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 490 insertions, 0 deletions

diff --git a/actionpack/test/controller/assert_select_test.rb b/actionpack/test/controller/assert_select_test.rb
new file mode 100644
index 0000000000..2117c852c0
--- /dev/null
+++ b/actionpack/test/controller/assert_select_test.rb
@@ -0,0 +1,490 @@
+#--
+# Copyright (c) 2006 Assaf Arkin (http://labnotes.org)
+# Under MIT and/or CC By license.
+#++
+
+require File.dirname(__FILE__) + '/../abstract_unit'
+require File.dirname(__FILE__) + '/fake_controllers'
+require "action_mailer"
+
+class AssertSelectTest < Test::Unit::TestCase
+  class AssertSelectController < ActionController::Base
+    def response_with=(content)
+      @content = content
+    end
+
+    def response_with(&block)
+      @update = block
+    end
+
+    def html()
+      render :text=>@content, :layout=>false, :content_type=>Mime::HTML
+      @content = nil
+    end
+
+    def rjs()
+      render :update do |page|
+        @update.call page
+      end
+      @update = nil
+    end
+
+    def xml()
+      render :text=>@content, :layout=>false, :content_type=>Mime::XML
+      @content = nil
+    end
+
+    def rescue_action(e)
+      raise e
+    end
+  end
+
+  class AssertSelectMailer < ActionMailer::Base
+    def test(html)
+      recipients "test <test@test.host>"
+      from "test@test.host"
+      subject "Test e-mail"
+      part :content_type=>"text/html", :body=>html
+    end
+  end
+
+  AssertionFailedError = Test::Unit::AssertionFailedError
+
+  def setup
+    @controller = AssertSelectController.new
+    @request    = ActionController::TestRequest.new
+    @response   = ActionController::TestResponse.new
+    ActionMailer::Base.delivery_method = :test
+    ActionMailer::Base.perform_deliveries = true
+    ActionMailer::Base.deliveries = []
+  end
+
+
+  def teardown
+    ActionMailer::Base.deliveries.clear
+  end
+
+
+  #
+  # Test assert select.
+  #
+
+  def test_assert_select
+    render_html %Q{<div id="1"></div><div id="2"></div>}
+    assert_select "div", 2
+    assert_raises(AssertionFailedError) { assert_select "div", 3 }
+    assert_raises(AssertionFailedError){ assert_select "p" }
+  end
+
+
+  def test_equality_true_false
+    render_html %Q{<div id="1"></div><div id="2"></div>}
+    assert_nothing_raised               { assert_select "div" }
+    assert_raises(AssertionFailedError) { assert_select "p" }
+    assert_nothing_raised               { assert_select "div", true }
+    assert_raises(AssertionFailedError) { assert_select "p", true }
+    assert_raises(AssertionFailedError) { assert_select "div", false }
+    assert_nothing_raised               { assert_select "p", false }
+  end
+
+
+  def test_equality_string_and_regexp
+    render_html %Q{<div id="1">foo</div><div id="2">foo</div>}
+    assert_nothing_raised               { assert_select "div", "foo" }
+    assert_raises(AssertionFailedError) { assert_select "div", "bar" }
+    assert_nothing_raised               { assert_select "div", :text=>"foo" }
+    assert_raises(AssertionFailedError) { assert_select "div", :text=>"bar" }
+    assert_nothing_raised               { assert_select "div", /(foo|bar)/ }
+    assert_raises(AssertionFailedError) { assert_select "div", /foobar/ }
+    assert_nothing_raised               { assert_select "div", :text=>/(foo|bar)/ }
+    assert_raises(AssertionFailedError) { assert_select "div", :text=>/foobar/ }
+    assert_raises(AssertionFailedError) { assert_select "p", :text=>/foobar/ }
+  end
+
+
+  def test_equality_of_html
+    render_html %Q{<p>\n<em>"This is <strong>not</strong> a big problem,"</em> he said.\n</p>}
+    text = "\"This is not a big problem,\" he said."
+    html = "<em>\"This is <strong>not</strong> a big problem,\"</em> he said."
+    assert_nothing_raised               { assert_select "p", text }
+    assert_raises(AssertionFailedError) { assert_select "p", html }
+    assert_nothing_raised               { assert_select "p", :html=>html }
+    assert_raises(AssertionFailedError) { assert_select "p", :html=>text }
+    # No stripping for pre.
+    render_html %Q{<pre>\n<em>"This is <strong>not</strong> a big problem,"</em> he said.\n</pre>}
+    text = "\n\"This is not a big problem,\" he said.\n"
+    html = "\n<em>\"This is <strong>not</strong> a big problem,\"</em> he said.\n"
+    assert_nothing_raised               { assert_select "pre", text }
+    assert_raises(AssertionFailedError) { assert_select "pre", html }
+    assert_nothing_raised               { assert_select "pre", :html=>html }
+    assert_raises(AssertionFailedError) { assert_select "pre", :html=>text }
+  end
+
+
+  def test_equality_of_instances
+    render_html %Q{<div id="1">foo</div><div id="2">foo</div>}
+    assert_nothing_raised               { assert_select "div", 2 }
+    assert_raises(AssertionFailedError) { assert_select "div", 3 }
+    assert_nothing_raised               { assert_select "div", 1..2 }
+    assert_raises(AssertionFailedError) { assert_select "div", 3..4 }
+    assert_nothing_raised               { assert_select "div", :count=>2 }
+    assert_raises(AssertionFailedError) { assert_select "div", :count=>3 }
+    assert_nothing_raised               { assert_select "div", :minimum=>1 }
+    assert_nothing_raised               { assert_select "div", :minimum=>2 }
+    assert_raises(AssertionFailedError) { assert_select "div", :minimum=>3 }
+    assert_nothing_raised               { assert_select "div", :maximum=>2 }
+    assert_nothing_raised               { assert_select "div", :maximum=>3 }
+    assert_raises(AssertionFailedError) { assert_select "div", :maximum=>1 }
+    assert_nothing_raised               { assert_select "div", :minimum=>1, :maximum=>2 }
+    assert_raises(AssertionFailedError) { assert_select "div", :minimum=>3, :maximum=>4 }
+  end
+
+
+  def test_substitution_values
+    render_html %Q{<div id="1">foo</div><div id="2">foo</div>}
+    assert_select "div#?", /\d+/ do |elements|
+      assert_equal 2, elements.size
+    end
+    assert_select "div" do
+      assert_select "div#?", /\d+/ do |elements|
+        assert_equal 2, elements.size
+        assert_select "#1"
+        assert_select "#2"
+      end
+    end
+  end
+
+  
+  def test_nested_assert_select
+    render_html %Q{<div id="1">foo</div><div id="2">foo</div>}
+    assert_select "div" do |elements|
+      assert_equal 2, elements.size
+      assert_select elements[0], "#1"
+      assert_select elements[1], "#2"
+    end
+    assert_select "div" do
+      assert_select "div" do |elements|
+        assert_equal 2, elements.size
+        # Testing in a group is one thing
+        assert_select "#1,#2"
+        # Testing individually is another.
+        assert_select "#1"
+        assert_select "#2"
+        assert_select "#3", false
+      end
+    end
+  end
+
+
+  def test_assert_select_from_rjs
+    render_rjs do |page|
+      page.replace_html "test", "<div id=\"1\">foo</div>\n<div id=\"2\">foo</div>"
+    end
+    assert_select "div" do |elements|
+      assert elements.size == 2
+      assert_select "#1"
+      assert_select "#2"
+    end
+    assert_select "div#?", /\d+/ do |elements|
+      assert_select "#1"
+      assert_select "#2"
+    end
+    # With multiple results.
+    render_rjs do |page|
+      page.replace_html "test", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+    end
+    assert_select "div" do |elements|
+      assert elements.size == 2
+      assert_select "#1"
+      assert_select "#2"
+    end
+  end
+
+
+  #
+  # Test css_select.
+  #
+
+
+  def test_css_select
+    render_html %Q{<div id="1"></div><div id="2"></div>}
+    assert 2, css_select("div").size
+    assert 0, css_select("p").size
+  end
+
+
+  def test_nested_css_select
+    render_html %Q{<div id="1">foo</div><div id="2">foo</div>}
+    assert_select "div#?", /\d+/ do |elements|
+      assert_equal 1, css_select(elements[0], "div").size
+      assert_equal 1, css_select(elements[1], "div").size
+    end
+    assert_select "div" do
+      assert_equal 2, css_select("div").size
+      css_select("div").each do |element|
+        # Testing as a group is one thing
+        assert !css_select("#1,#2").empty?
+        # Testing individually is another
+        assert !css_select("#1").empty?
+        assert !css_select("#2").empty?
+      end
+    end
+  end
+
+
+  def test_css_select_from_rjs
+    # With one result.
+    render_rjs do |page|
+      page.replace_html "test", "<div id=\"1\">foo</div>\n<div id=\"2\">foo</div>"
+    end
+    assert_equal 2, css_select("div").size
+    assert_equal 1, css_select("#1").size
+    assert_equal 1, css_select("#2").size
+    # With multiple results.
+    render_rjs do |page|
+      page.replace_html "test", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+    end
+    assert_equal 2, css_select("div").size
+    assert_equal 1, css_select("#1").size
+    assert_equal 1, css_select("#2").size
+  end
+
+
+  #
+  # Test assert_select_rjs.
+  #
+
+
+  def test_assert_select_rjs
+    # Test that we can pick up all statements in the result.
+    render_rjs do |page|
+      page.replace "test", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+      page.insert_html :top, "test3", "<div id=\"3\">foo</div>"
+    end
+    found = false
+    assert_select_rjs do
+      assert_select "#1"
+      assert_select "#2"
+      assert_select "#3"
+      found = true
+    end
+    assert found
+    # Test that we fail if there is nothing to pick.
+    render_rjs do |page|
+    end
+    assert_raises(AssertionFailedError) { assert_select_rjs }
+  end
+
+
+  def test_assert_select_rjs_with_id
+    # Test that we can pick up all statements in the result.
+    render_rjs do |page|
+      page.replace "test1", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+      page.insert_html :top, "test3", "<div id=\"3\">foo</div>"
+    end
+    assert_select_rjs "test1" do
+      assert_select "div", 1
+      assert_select "#1"
+    end
+    assert_select_rjs "test2" do
+      assert_select "div", 1
+      assert_select "#2"
+    end
+    assert_select_rjs "test3" do
+      assert_select "div", 1
+      assert_select "#3"
+    end
+    assert_raises(AssertionFailedError) { assert_select_rjs "test4" }
+  end
+
+
+  def test_assert_select_rjs_for_replace
+    render_rjs do |page|
+      page.replace "test1", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+      page.insert_html :top, "test3", "<div id=\"3\">foo</div>"
+    end
+    # Replace.
+    assert_select_rjs :replace do
+      assert_select "div", 1
+      assert_select "#1"
+    end
+    assert_select_rjs :replace, "test1" do
+      assert_select "div", 1
+      assert_select "#1"
+    end
+    assert_raises(AssertionFailedError) { assert_select_rjs :replace, "test2" }
+    # Replace HTML.
+    assert_select_rjs :replace_html do
+      assert_select "div", 1
+      assert_select "#2"
+    end
+    assert_select_rjs :replace_html, "test2" do
+      assert_select "div", 1
+      assert_select "#2"
+    end
+    assert_raises(AssertionFailedError) { assert_select_rjs :replace_html, "test1" }
+  end
+
+
+  def test_assert_select_rjs_for_insert
+    render_rjs do |page|
+      page.replace "test1", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+      page.insert_html :top, "test3", "<div id=\"3\">foo</div>"
+    end
+    # Non-positioned.
+    assert_select_rjs :insert_html do
+      assert_select "div", 1
+      assert_select "#3"
+    end
+    assert_select_rjs :insert_html, "test3" do
+      assert_select "div", 1
+      assert_select "#3"
+    end
+    assert_raises(AssertionFailedError) { assert_select_rjs :insert_html, "test1" }
+    # Positioned.
+    render_rjs do |page|
+      page.insert_html :top, "test1", "<div id=\"1\">foo</div>"
+      page.insert_html :bottom, "test2", "<div id=\"2\">foo</div>"
+      page.insert_html :before, "test3", "<div id=\"3\">foo</div>"
+      page.insert_html :after, "test4", "<div id=\"4\">foo</div>"
+    end
+    assert_select_rjs :insert, :top do
+      assert_select "div", 1
+      assert_select "#1"
+    end
+    assert_select_rjs :insert, :bottom do
+      assert_select "div", 1
+      assert_select "#2"
+    end
+    assert_select_rjs :insert, :before do
+      assert_select "div", 1
+      assert_select "#3"
+    end
+    assert_select_rjs :insert, :after do
+      assert_select "div", 1
+      assert_select "#4"
+    end
+    assert_select_rjs :insert_html do
+      assert_select "div", 4
+    end
+  end
+
+
+  def test_nested_assert_select_rjs
+    # Simple selection from a single result.
+    render_rjs do |page|
+      page.replace_html "test", "<div id=\"1\">foo</div>\n<div id=\"2\">foo</div>"
+    end
+    assert_select_rjs "test" do |elements|
+      assert_equal 2, elements.size
+      assert_select "#1"
+      assert_select "#2"
+    end
+    # Deal with two results.
+    render_rjs do |page|
+      page.replace_html "test", "<div id=\"1\">foo</div>"
+      page.replace_html "test2", "<div id=\"2\">foo</div>"
+    end
+    assert_select_rjs "test" do |elements|
+      assert_equal 1, elements.size
+      assert_select "#1"
+    end
+    assert_select_rjs "test2" do |elements|
+      assert_equal 1, elements.size
+      assert_select "#2"
+    end
+  end
+
+
+  def test_feed_item_encoded
+    render_xml <<-EOF
+<rss version="2.0">
+  <channel>
+    <item>
+      <description>
+        <![CDATA[
+          <p>Test 1</p>
+        ]]>
+      </description>
+    </item>
+    <item>
+      <description>
+        <![CDATA[
+          <p>Test 2</p>
+        ]]>
+      </description>
+    </item>
+  </channel>
+</rss>
+EOF
+    assert_select "channel item description" do
+      # Test element regardless of wrapper.
+      assert_select_encoded do
+        assert_select "p", :count=>2, :text=>/Test/
+      end
+      # Test through encoded wrapper.
+      assert_select_encoded do
+        assert_select "encoded p", :count=>2, :text=>/Test/
+      end
+      # Use :root instead (recommended)
+      assert_select_encoded do
+        assert_select ":root p", :count=>2, :text=>/Test/
+      end
+      # Test individually.
+      assert_select "description" do |elements|
+        assert_select_encoded elements[0] do
+          assert_select "p", "Test 1"
+        end
+        assert_select_encoded elements[1] do
+          assert_select "p", "Test 2"
+        end
+      end
+    end
+
+    # Test that we only un-encode element itself.
+    assert_select "channel item" do
+      assert_select_encoded do
+        assert_select "p", 0
+      end
+    end
+  end
+
+
+  #
+  # Test assert_select_email
+  #
+
+  def test_assert_select_email
+    assert_raises(AssertionFailedError) { assert_select_email {} }
+    AssertSelectMailer.deliver_test "<div><p>foo</p><p>bar</p></div>"
+    assert_select_email do
+      assert_select "div:root" do
+        assert_select "p:first-child", "foo"
+        assert_select "p:last-child", "bar"
+      end
+    end
+  end
+
+
+  protected
+    def render_html(html)
+      @controller.response_with = html
+      get :html
+    end
+
+    def render_rjs(&block)
+      @controller.response_with &block
+      get :rjs
+    end
+
+    def render_xml(xml)
+      @controller.response_with = xml
+      get :xml
+    end
+end
\ No newline at end of file