test: increase coverage to 100% and improvements

eslint.config.js

@@ -2,5 +2,5 @@
 
 module.exports = require('neostandard')({
   ts: true,
-  ignores: ['dist/', 'node_modules/', 'test/'],
+  ignores: ['lib/', 'node_modules/', 'test/'],
 })

package.json

@@ -68,8 +68,7 @@
     "fastify-plugin": "^6.0.0"
   },
   "files": [
-    "/lib",
-    "/typings"
+    "/lib"
   ],
   "publishConfig": {
     "access": "public"

src/index.ts

@@ -1,4 +1,4 @@
-import fp from 'fastify-plugin'
+import fp = require('fastify-plugin')
 import { flashFactory } from './flash'
 import '@fastify/secure-session'
 

tests/index.test.ts → test/index.test.ts

@@ -2,7 +2,7 @@ import { test, TestContext } from 'node:test'
 import { join } from 'node:path'
 import { readFileSync } from 'node:fs'
 import Fastify from 'fastify'
-import fastifySession from '@fastify/secure-session'
+import fastifySession, { Session, SessionData } from '@fastify/secure-session'
 import querystring from 'node:querystring'
 import fastifyFlash from '../src'
 
@@ -393,3 +393,29 @@ test('reply.flash() with no data', async (t: TestContext) => {
   t.assert.strictEqual(response.payload, '{"warning":[]}')
   t.assert.strictEqual(response.statusCode, 200)
 })
+
+test('should return 0 when session storage does not echo back what was just set', async (t: TestContext) => {
+  t.plan(3)
+  const fastify = Fastify()
+
+  const fakeSession = {
+    get: () => undefined,
+    set: () => {}
+  } as unknown as Session<SessionData>
+
+  fastify.decorateRequest('session', { getter: () => fakeSession })
+  fastify.register(fastifyFlash)
+
+  fastify.get('/test', (req, reply) => {
+    const count = req.flash('error', 'Something went wrong')
+    t.assert.strictEqual(count, 0)
+    reply.send({ count })
+  })
+
+  const response = await fastify.inject({
+    method: 'GET',
+    url: '/test',
+  })
+  t.assert.strictEqual(response.payload, '{"count":0}')
+  t.assert.strictEqual(response.statusCode, 200)
+})

tsconfig.json

@@ -16,6 +16,6 @@
     "skipLibCheck": true
   },
   "exclude": ["node_modules"],
-  "include": ["./src/**/*.ts", "./tests/**/*.ts"],
+  "include": ["./src/**/*.ts", "test/**/*.ts"],
   "incremental": true
 }