Initial commit

Signed-off-by: mikesir87 <mikesir87@gmail.com>

Imported from dockersamples/101-tutorial, removed other languages
for now, and replaced PWD references with Docker Desktop.

app/spec/persistence/sqlite.spec.js

@@ -0,0 +1,64 @@
+const db = require('../../src/persistence/sqlite');
+const fs = require('fs');
+
+const ITEM = {
+    id: '7aef3d7c-d301-4846-8358-2a91ec9d6be3',
+    name: 'Test',
+    completed: false,
+};
+
+beforeEach(() => {
+    if (fs.existsSync('/etc/todos/todo.db')) {
+        fs.unlinkSync('/etc/todos/todo.db');
+    }
+});
+
+test('it initializes correctly', async () => {
+    await db.init();
+});
+
+test('it can store and retrieve items', async () => {
+    await db.init();
+
+    await db.storeItem(ITEM);
+
+    const items = await db.getItems();
+    expect(items.length).toBe(1);
+    expect(items[0]).toEqual(ITEM);
+});
+
+test('it can update an existing item', async () => {
+    await db.init();
+
+    const initialItems = await db.getItems();
+    expect(initialItems.length).toBe(0);
+
+    await db.storeItem(ITEM);
+
+    await db.updateItem(
+        ITEM.id,
+        Object.assign({}, ITEM, { completed: !ITEM.completed }),
+    );
+
+    const items = await db.getItems();
+    expect(items.length).toBe(1);
+    expect(items[0].completed).toBe(!ITEM.completed);
+});
+
+test('it can remove an existing item', async () => {
+    await db.init();
+    await db.storeItem(ITEM);
+
+    await db.removeItem(ITEM.id);
+
+    const items = await db.getItems();
+    expect(items.length).toBe(0);
+});
+
+test('it can get a single item', async () => {
+    await db.init();
+    await db.storeItem(ITEM);
+
+    const item = await db.getItem(ITEM.id);
+    expect(item).toEqual(ITEM);
+});