test: notion presenter

spec/presenters/notion_page_presenter_spec.rb

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+require 'rails_helper'
+
+RSpec.describe NotionPagePresenter do
+  subject(:presenter) { described_class.new(page_response, blocks_response) }
+
+  let(:page_response) do
+    {
+      'id' => 'page-123',
+      'icon' => { 'emoji' => '📄' },
+      'created_time' => '2023-01-01T10:00:00.000Z',
+      'last_edited_time' => '2023-01-02T15:30:00.000Z',
+      'properties' => {
+        'title' => {
+          'type' => 'title',
+          'title' => [
+            { 'plain_text' => 'Test Page Title' }
+          ]
+        }
+      }
+    }
+  end
+
+  let(:blocks_response) do
+    {
+      'results' => [
+        {
+          'type' => 'paragraph',
+          'paragraph' => {
+            'rich_text' => [
+              { 'plain_text' => 'This is a paragraph.' }
+            ]
+          }
+        },
+        {
+          'type' => 'child_page',
+          'id' => 'child-page-1',
+          'child_page' => {
+            'title' => 'Child Page 1'
+          }
+        }
+      ]
+    }
+  end
+
+  let(:markdown_converter) { instance_double(NotionToMarkdown) }
+
+  before do
+    allow(NotionToMarkdown).to receive(:new).and_return(markdown_converter)
+    allow(markdown_converter).to receive(:convert).and_return('This is a paragraph.')
+  end
+
+  describe '#to_hash' do
+    it 'returns a properly formatted hash with all required fields' do
+      result = presenter.to_hash
+
+      expect(result).to include(
+        'id' => 'page-123',
+        'icon' => { 'emoji' => '📄' },
+        'title' => 'Test Page Title',
+        'created_time' => '2023-01-01T10:00:00.000Z',
+        'last_edited_time' => '2023-01-02T15:30:00.000Z'
+      )
+    end
+
+    it 'includes markdown content with title as H1' do
+      result = presenter.to_hash
+
+      expect(result['md']).to eq("# Test Page Title\n\nThis is a paragraph.")
+    end
+
+    it 'includes child pages with id and title' do
+      result = presenter.to_hash
+
+      expect(result['child_pages']).to eq([
+                                            {
+                                              'id' => 'child-page-1',
+                                              'title' => 'Child Page 1'
+                                            }
+                                          ])
+    end
+
+    it 'calls NotionToMarkdown converter with blocks' do
+      presenter.to_hash
+
+      expect(markdown_converter).to have_received(:convert).with(blocks_response['results'])
+    end
+
+    context 'when page has no title in properties' do
+      let(:page_response) do
+        {
+          'id' => 'page-123',
+          'icon' => nil,
+          'created_time' => '2023-01-01T10:00:00.000Z',
+          'last_edited_time' => '2023-01-02T15:30:00.000Z',
+          'properties' => {}
+        }
+      end
+
+      it 'returns nil for title and no H1 in markdown' do
+        result = presenter.to_hash
+
+        expect(result['title']).to be_nil
+        expect(result['md']).to eq('This is a paragraph.')
+      end
+    end
+
+    context 'when page has no properties' do
+      let(:page_response) do
+        {
+          'id' => 'page-123',
+          'icon' => nil,
+          'created_time' => '2023-01-01T10:00:00.000Z',
+          'last_edited_time' => '2023-01-02T15:30:00.000Z'
+        }
+      end
+
+      it 'returns nil for title' do
+        result = presenter.to_hash
+
+        expect(result['title']).to be_nil
+      end
+    end
+
+    context 'with nested child pages' do
+      let(:blocks_response) do
+        {
+          'results' => [
+            {
+              'type' => 'toggle',
+              'has_children' => true,
+              'children' => [
+                {
+                  'type' => 'child_page',
+                  'id' => 'nested-child-1',
+                  'child_page' => {
+                    'title' => 'Nested Child Page'
+                  }
+                }
+              ]
+            },
+            {
+              'type' => 'child_page',
+              'id' => 'top-level-child',
+              'child_page' => {
+                'title' => 'Top Level Child'
+              }
+            }
+          ]
+        }
+      end
+
+      it 'extracts all child pages including nested ones' do
+        result = presenter.to_hash
+
+        expect(result['child_pages']).to contain_exactly(
+          {
+            'id' => 'nested-child-1',
+            'title' => 'Nested Child Page'
+          },
+          {
+            'id' => 'top-level-child',
+            'title' => 'Top Level Child'
+          }
+        )
+      end
+    end
+
+    context 'when blocks response has no child pages' do
+      let(:blocks_response) do
+        {
+          'results' => [
+            {
+              'type' => 'paragraph',
+              'paragraph' => {
+                'rich_text' => [
+                  { 'plain_text' => 'Just a paragraph.' }
+                ]
+              }
+            }
+          ]
+        }
+      end
+
+      it 'returns empty child_pages array' do
+        result = presenter.to_hash
+
+        expect(result['child_pages']).to eq([])
+      end
+    end
+
+    context 'when blocks response is empty' do
+      let(:blocks_response) { { 'results' => [] } }
+
+      it 'handles empty blocks gracefully' do
+        allow(markdown_converter).to receive(:convert).with([]).and_return('')
+
+        result = presenter.to_hash
+
+        expect(result['md']).to eq("# Test Page Title\n\n")
+        expect(result['child_pages']).to eq([])
+      end
+    end
+  end
+end