Refactor Main and VeiculoView classes for better error handling and u…

…ser experience

src/test/java/br/lazaro/views/VeiculoViewTest.java

@@ -0,0 +1,139 @@
+package br.lazaro.views;
+
+import br.lazaro.models.Veiculo;
+import br.lazaro.repositories.*;
+import br.lazaro.controllers.*;
+import org.junit.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.util.List;
+
+import static org.junit.Assert.*;
+
+public class VeiculoViewTest {
+
+    @Test
+    public void test_instantiation() {
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        assertNotNull(view);
+    }
+
+    @Test
+    public void test_display_menu() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        view.showMenu();
+
+        String expectedOutput = "1 - Comprar veículo\r\n2 - Estoque de veículo\r\n3 - Vender veículo\r\n4 - Relatório de vendas\r\n";
+        assertEquals(expectedOutput, outContent.toString());
+    }
+
+    @Test
+    public void test_buy_vehicle() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        ByteArrayInputStream inContent = new ByteArrayInputStream("Teste\nTeste\nTeste\n2022\n10000.0\n".getBytes());
+        System.setIn(inContent);
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        view.comprarVeiculo();
+
+        List<Veiculo> estoque = repository.estoque();
+        assertEquals(1, estoque.size());
+    }
+
+    @Test
+    public void test_list_inventory() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        controller.venderVeiculo(0);
+        view.listarEstoque();
+
+        String expectedOutput = "Nenhum veículo em estoque disponível.\r\n";
+        assertEquals(expectedOutput, outContent.toString());
+    }
+
+    @Test
+    public void test_sell_vehicle() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        ByteArrayInputStream inContent = new ByteArrayInputStream("0\n".getBytes());
+        System.setIn(inContent);
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        view.venderVeiculo();
+
+        List<Veiculo> vendidos = repository.vendidos();
+        assertEquals(1, vendidos.size());
+    }
+
+    @Test
+    public void test_list_sold_vehicles() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        view.listarVendidos();
+
+        String expectedOutput = "Nenhum veículo vendido.\r\n";
+        assertEquals(expectedOutput, outContent.toString());
+    }
+
+    @Test
+    public void test_list_inventory_empty() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        controller.venderVeiculo(0);
+        view.listarEstoque();
+
+        String expectedOutput = "Nenhum veículo em estoque disponível.\r\n";
+        assertEquals(expectedOutput, outContent.toString());
+    }
+
+    @Test
+    public void test_list_sold_vehicles_empty() {
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+
+        VeiculoRepository repository = new VeiculoRepository();
+        VeiculoController controller = new VeiculoController(repository);
+        VeiculoView view = new VeiculoView(controller);
+
+        view.listarVendidos();
+
+        String expectedOutput = "Nenhum veículo vendido.\r\n";
+        assertEquals(expectedOutput, outContent.toString());
+    }
+
+}