Add CLI tests and clean up ignored test files

Co-authored-by: markets <[email protected]>

Author: Copilot

.gitignore

@@ -4,3 +4,10 @@
 /pkg/
 /tmp/
 Gemfile.lock
+
+# Test files and temporary directories
+test_export.csv
+test_import.csv
+locales/
+translations/
+config/locales/

locales/en.yml

@@ -0,0 +1,150 @@
+require 'spec_helper'
+require 'mini_i18n/cli'
+require 'csv'
+require 'tempfile'
+
+RSpec.describe MiniI18n::CLI do
+  let(:cli) { described_class.new(args) }
+  
+  describe '#run' do
+    context 'with version command' do
+      let(:args) { ['version'] }
+      
+      it 'prints the version' do
+        expect { cli.run }.to output("#{MiniI18n::VERSION}\n").to_stdout
+      end
+    end
+    
+    context 'with help command' do
+      let(:args) { ['help'] }
+      
+      it 'prints help information' do
+        expect { cli.run }.to output(/Usage: mi18n/).to_stdout
+      end
+    end
+    
+    context 'with no arguments' do
+      let(:args) { [] }
+      
+      it 'prints help information' do
+        expect { cli.run }.to output(/Usage: mi18n/).to_stdout
+      end
+    end
+    
+    context 'with unknown command' do
+      let(:args) { ['unknown'] }
+      
+      it 'prints error and exits' do
+        expect { cli.run }.to output(/Unknown command: unknown/).to_stdout
+        expect { cli.run }.to raise_error(SystemExit)
+      end
+    end
+  end
+  
+  describe 'with translation files' do
+    let(:temp_dir) { Dir.mktmpdir }
+    
+    before do
+      # Create test translation files
+      en_content = {
+        'en' => {
+          'hello' => 'Hello',
+          'nested' => { 'greeting' => 'Good morning' }
+        }
+      }
+      
+      es_content = {
+        'es' => {
+          'hello' => 'Hola',
+          'nested' => { 'greeting' => '' }
+        }
+      }
+      
+      File.write(File.join(temp_dir, 'en.yml'), en_content.to_yaml)
+      File.write(File.join(temp_dir, 'es.yml'), es_content.to_yaml)
+      
+      # Mock the glob pattern to find our test files
+      allow(Dir).to receive(:glob).and_call_original
+      allow(Dir).to receive(:glob).with('config/locales/*.yml').and_return([])
+      allow(Dir).to receive(:glob).with('config/locales/*.yaml').and_return([])
+      allow(Dir).to receive(:glob).with('locales/*.yml').and_return([
+        File.join(temp_dir, 'en.yml'),
+        File.join(temp_dir, 'es.yml')
+      ])
+    end
+    
+    after do
+      FileUtils.rm_rf(temp_dir)
+    end
+    
+    context 'with stats command' do
+      let(:args) { ['stats'] }
+      
+      it 'shows translation statistics' do
+        output = capture_stdout { cli.run }
+        
+        expect(output).to include('Translation Statistics:')
+        expect(output).to include('Number of locales: 2')
+        expect(output).to include('Total unique keys: 2')
+        expect(output).to include('en: 2/2 keys (100.0% complete)')
+        expect(output).to include('es: 1/2 keys (50.0% complete)')
+      end
+    end
+    
+    context 'with missing command' do
+      let(:args) { ['missing'] }
+      
+      it 'shows missing translation keys' do
+        output = capture_stdout { cli.run }
+        
+        expect(output).to include("Missing keys for 'es' locale:")
+        expect(output).to include('nested.greeting')
+      end
+    end
+    
+    context 'with missing command and locale filter' do
+      let(:args) { ['missing', '--locale=es'] }
+      
+      it 'shows missing keys for specific locale' do
+        output = capture_stdout { cli.run }
+        
+        expect(output).to include("Missing keys for 'es' locale:")
+        expect(output).to include('nested.greeting')
+        expect(output).not_to include("Missing keys for 'en' locale:")
+      end
+    end
+    
+    context 'with export command' do
+      let(:temp_csv) { Tempfile.new(['test', '.csv']) }
+      let(:args) { ['export', "--file=#{temp_csv.path}"] }
+      
+      after do
+        temp_csv.close
+        temp_csv.unlink
+      end
+      
+      it 'exports translations to CSV' do
+        output = capture_stdout { cli.run }
+        
+        expect(output).to include("Translations exported successfully to #{temp_csv.path}")
+        
+        csv_content = CSV.read(temp_csv.path, headers: true)
+        expect(csv_content.headers).to eq(['key', 'en', 'es'])
+        expect(csv_content.map(&:to_h)).to include(
+          { 'key' => 'hello', 'en' => 'Hello', 'es' => 'Hola' }
+        )
+      end
+    end
+  end
+  
+  private
+  
+  def capture_stdout
+    original_stdout = $stdout
+    $stdout = StringIO.new
+    yield
+    $stdout.string
+  ensure
+    $stdout = original_stdout
+  end
+end