README.md in amber_component-0.0.5 vs README.md in amber_component-1.0.0

@@ -281,26 +281,30 @@
 
 ```erb
 <!-- app/controller/tasks/show.html.erb -->
 
 <%= ModalComponent.call id: 'update-task-modal' title: 'Update the task' do %>
+    <!-- You can provide HTML and render other components -->
     <h2>This is your task!</h2>
     <%= form_with model: @task do |f| %>
         <%= f.text_field :name %>
         <%= f.text_area :description %>
         <%= f.submit %>
     <% end %>
+    <%= OtherComponent.call some: 'prop' %>
 <% end %>
 ```
 
 Note that this will raise an error when no block/nested content is provided.
 
 In order to render nested content
 only when it is present (will work without nested content)
 you can use `yield.html_safe if block_given?`
 
 In general `block_given?` will return `true` when a block/nested content is present, otherwise `false`.
+You can use it to render content conditionally based on
+whether nested content is present.
 
 ### Components with namespaces
 
 Components may be defined inside multiple modules/namespaces.
 
@@ -355,9 +359,102 @@
 ```sh
 $ bin/rails generate component FooBar
 ```
 
 This will generate a new component in `app/components/foo_bar_component.rb` along with a view, stylesheet and test file.
+
+### Testing Components
+
+### Rails
+
+After setting up this gem with the rails generator
+`rails generate amber_component:install` a new abstract
+test class will be available called `ApplicationComponentTestCase`.
+
+It provides a handful of helper methods to make it
+easier to inspect the rendered HTML.
+
+A simple test file may look like this:
+
+```ruby
+# test/components/foo_component_test.rb
+
+require 'test_helper'
+
+class FooComponentTest < ApplicationComponentTestCase
+    test 'render correct HTML' do
+        # Specify what the assertions are supposed to
+        # check against.
+        #
+        # There can be multiple renders in one test
+        # but they override the previous one.
+        # So there is only one rendered component
+        # at any given time.
+        render do
+            FooComponent.call some: 'prop'
+        end
+
+        # Assertions on the rendered HTML
+
+        # Use a CSS selector
+        assert_selector ".foo_component span.my_class", text: 'Some Text'
+        # Check text
+        assert_text 'Amber Component is awesome!'
+    end
+end
+```
+
+A full list of available assertions can be found [here](https://rubydoc.info/github/jnicklas/capybara/Capybara/Node/Matchers).
+
+### Non Rails
+
+There is a test case class for minitest. You can
+access it by requiring `'amber_component/minitest_test_case'`.
+
+It has the same assertion methods as the Rails test case class.
+It requires [capybara](https://github.com/teamcapybara/capybara) to be installed and present in the Gemfile.
+
+A full list of available assertions can be found [here](https://rubydoc.info/github/jnicklas/capybara/Capybara/Node/Matchers).
+
+```ruby
+require 'amber_component/minitest_test_case'
+
+class FooComponentTest < AmberComponent::MinitestTestCase
+    def test_render_correct_html
+        # Specify what the assertions are supposed to
+        # check against.
+        #
+        # There can be multiple renders in one test
+        # but they override the previous one.
+        # So there is only one rendered component
+        # at any given time.
+        render do
+            FooComponent.call some: 'prop'
+        end
+
+        # Assertions on the rendered HTML
+
+        # Use a CSS selector
+        assert_selector ".foo_component span.my_class", text: 'Some Text'
+        # Check text
+        assert_text 'Amber Component is awesome!'
+    end
+end
+```
+
+There is also a helper module which provides all of these assertions
+under `'amber_component/test_helper'`.
+
+```ruby
+require 'amber_component/test_helper'
+
+class MyAbstractTestCase < ::Minitest::Test
+    include ::AmberComponent::TestHelper
+end
+```
+
+Note that this module has only been tested with minitest and rails test suites,
+so it may require overriding or implementing a few methods to work with other test suites.
 
 ## Contribute
 
 Do you want to contribute to AmberComponent? Open the issues page and check for the help wanted label! But before you start coding, please read our [Contributing Guide](https://github.com/amber-ruby/amber_component/blob/main/CONTRIBUTING.md).