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Testing Rich Text Area Input Generation in Simple Form

This test suite validates the functionality of rich text area inputs in Simple Form, focusing on text attribute handling and placeholder support. The tests ensure proper HTML textarea generation and attribute assignment for form inputs.

Test Coverage Overview

The test suite covers essential aspects of rich text area input functionality in Simple Form.

Tests text attribute handling for textarea generation
Validates placeholder text support in textareas
Ensures proper HTML element class and ID assignment
Verifies DOM structure compliance

Implementation Analysis

The testing approach utilizes ActionView::TestCase for form input validation. The implementation employs with_input_for helper method to simulate form generation, combined with assert_select for DOM verification. The tests demonstrate integration between Simple Form’s input generation and Rails form helpers.

Technical Details

Testing Framework: Minitest
Test Environment: ActionView::TestCase
Assertion Methods: assert_select for DOM validation
Helper Methods: with_input_for for form generation
Test Focus: HTML element generation and attribute assignment

Best Practices Demonstrated

The test suite exemplifies clean and focused testing practices with isolated test cases for specific functionality. Each test verifies a single aspect of the rich text area input, following the single responsibility principle. The use of descriptive test names and clear assertions enhances maintainability and readability.

heartcombo/simple_form

test/inputs/rich_text_area_input_test.rb

            
# frozen_string_literal: true
# encoding: UTF-8
require 'test_helper'

class RichTextAreaInputTest < ActionView::TestCase
  test 'input generates a text area for text attributes' do
    with_input_for @user, :description, :text
    assert_select 'textarea.text#user_description'
  end

  test 'input generates a text area for text attributes that accept placeholder' do
    with_input_for @user, :description, :text, placeholder: 'Put in some text'
    assert_select 'textarea.text[placeholder="Put in some text"]'
  end
end