escenario template method

packages/template-method/src/BebidasTemplate.ts

@@ -0,0 +1,15 @@
+
+export abstract class BebidasTemplate {
+    public prepare(): string[] {
+      return [
+        'Hervir agua',
+        this.brew(),
+        this.addCondiments(),
+        'Servir en taza',
+      ];
+    }
+
+    protected abstract brew(): string;
+    protected abstract addCondiments(): string;
+  }
+

packages/template-method/src/Cafe.ts

@@ -0,0 +1,11 @@
+import { BebidasTemplate } from './BebidasTemplate';
+
+export class Cafe extends BebidasTemplate {
+  protected brew(): string {
+    return 'Filtrar café molido';
+  }
+
+  protected addCondiments(): string {
+    return 'Agregar azúcar y leche';
+  }
+}

packages/template-method/src/Te.ts

@@ -0,0 +1,11 @@
+import { BebidasTemplate } from './BebidasTemplate';
+
+export class Te extends BebidasTemplate {
+  protected brew(): string {
+    return 'Remojar bolsita de té';
+  }
+
+  protected addCondiments(): string {
+    return 'Agregar limón';
+  }
+}

packages/template-method/src/index.ts

@@ -1,23 +1,12 @@
-class SubsystemA {
-    operationA(): string {
-      return 'SubsystemA: Ready!';
-    }
-  }
-
-  class SubsystemB {
-    operationB(): string {
-      return 'SubsystemB: Working!';
-    }
-  }
-
-  export class Template {
-    private subsystemA = new SubsystemA();
-    private subsystemB = new SubsystemB();
-
-    public operation(): string {
-      const resultA = this.subsystemA.operationA();
-      const resultB = this.subsystemB.operationB();
-      return `${resultA} ${resultB}`;
-    }
-  }
-
+import { Te } from './Te';
+import { Cafe } from './Cafe';
+
+const drinks = [
+  { name: 'Te', instance: new Te() },
+  { name: 'Cafe', instance: new Cafe() },
+];
+
+drinks.forEach(drink => {
+  console.log(`\nPreparando ${drink.name}:`);
+  drink.instance.prepare().forEach(step => console.log(`- ${step}`));
+});

packages/template-method/tests/cafe.test.ts

@@ -0,0 +1,13 @@
+import { Cafe } from '../src/Cafe';
+
+describe('Preparación del café', () => {
+  it('should follow correct steps', () => {
+    const cafe = new Cafe();
+    expect(cafe.prepare()).toEqual([
+      'Hervir agua',
+      'Filtrar café molido',
+      'Agregar azúcar y leche',
+      'Servir en taza',
+    ]);
+  });
+});

packages/template-method/tests/te.test.ts

@@ -0,0 +1,13 @@
+import { Te } from '../src/Te';
+
+describe('Preparación del Té', () => {
+  it('should follow correct steps', () => {
+    const te = new Te();
+    expect(te.prepare()).toEqual([
+      'Hervir agua',
+      'Remojar bolsita de té',
+      'Agregar limón',
+      'Servir en taza',
+    ]);
+  });
+});