1 files changed, 33 insertions, 0 deletions
diff --git a/app/spec/routes/updateItem.spec.js b/app/spec/routes/updateItem.spec.js
new file mode 100644
index 0000000..640e56e
--- /dev/null
+++ b/app/spec/routes/updateItem.spec.js
@@ -0,0 +1,33 @@
+const db = require('../../src/persistence');
+const updateItem = require('../../src/routes/updateItem');
+const ITEM = { id: 12345 };
+
+jest.mock('../../src/persistence', () => ({
+    getItem: jest.fn(),
+    updateItem: jest.fn(),
+}));
+
+test('it updates items correctly', async () => {
+    const req = {
+        params: { id: 1234 },
+        body: { name: 'New title', completed: false },
+    };
+    const res = { send: jest.fn() };
+
+    db.getItem.mockReturnValue(Promise.resolve(ITEM));
+
+    await updateItem(req, res);
+
+    expect(db.updateItem.mock.calls.length).toBe(1);
+    expect(db.updateItem.mock.calls[0][0]).toBe(req.params.id);
+    expect(db.updateItem.mock.calls[0][1]).toEqual({
+        name: 'New title',
+        completed: false,
+    });
+
+    expect(db.getItem.mock.calls.length).toBe(1);
+    expect(db.getItem.mock.calls[0][0]).toBe(req.params.id);
+
+    expect(res.send.mock.calls[0].length).toBe(1);
+    expect(res.send.mock.calls[0][0]).toEqual(ITEM);
+});