noPrependStageInUrl false should have a leading slash

src/events/http/HttpServer.js

@@ -347,7 +347,7 @@ export default class HttpServer {
       }
 
       const requestPath = request.path.substr(
-        this.#options.noPrependStageInUrl ? 1 : `/${stage}`.length,
+        this.#options.noPrependStageInUrl ? 0 : `/${stage}`.length,
       )
 
       if (request.auth.credentials && request.auth.strategy) {

tests/integration/handler/handler.js

@@ -195,3 +195,10 @@ exports.BadAnswerInPromiseHandler = async () => {
 exports.BadAnswerInCallbackHandler = (event, context, callback) => {
   callback(null, {})
 }
+
+exports.TestPathVariable = (event, context, callback) => {
+  callback(null, {
+    statusCode: 200,
+    body: stringify(event.path),
+  })
+}

tests/integration/handler/handlerPayload.test.js

@@ -9,6 +9,7 @@ describe('handler payload tests', () => {
   beforeAll(() =>
     setup({
       servicePath: resolve(__dirname),
+      noPrependStageInUrl: false,
     }),
   )
 
@@ -124,6 +125,13 @@ describe('handler payload tests', () => {
       status: 200,
     },
 
+    {
+      description: 'test path variable with Prepend',
+      expected: '/test-path-variable-handler',
+      path: '/dev/test-path-variable-handler',
+      status: 200,
+    },
+
     // TODO: reactivate!
     // {
     //   description: 'when handler calls context.succeed and context.done',
@@ -165,3 +173,145 @@ describe('handler payload tests', () => {
     })
   })
 })
+
+describe('handler payload tests with prepend off', () => {
+  // init
+  beforeAll(() =>
+    setup({
+      servicePath: resolve(__dirname),
+      args: ['--noPrependStageInUrl'],
+    }),
+  )
+
+  // cleanup
+  afterAll(() => teardown())
+
+  //
+  ;[
+    {
+      description: 'when handler is context.done',
+      expected: 'foo',
+      path: '/context-done-handler',
+      status: 200,
+    },
+
+    {
+      description: 'when handler is context.done which is deferred',
+      expected: 'foo',
+      path: '/context-done-handler-deferred',
+      status: 200,
+    },
+
+    {
+      description: 'when handler is context.succeed',
+      expected: 'foo',
+      path: '/context-succeed-handler',
+      status: 200,
+    },
+
+    {
+      description: 'when handler is context.succeed which is deferred',
+      expected: 'foo',
+      path: '/context-succeed-handler-deferred',
+      status: 200,
+    },
+
+    {
+      description: 'when handler is a callback',
+      expected: 'foo',
+      path: '/callback-handler',
+      status: 200,
+    },
+    {
+      description: 'when handler is a callback which is deferred',
+      expected: 'foo',
+      path: '/callback-handler-deferred',
+      status: 200,
+    },
+
+    {
+      description: 'when handler returns a promise',
+      expected: 'foo',
+      path: '/promise-handler',
+      status: 200,
+    },
+
+    {
+      description: 'when handler a promise which is deferred',
+      expected: 'foo',
+      path: '/promise-handler-deferred',
+      status: 200,
+    },
+
+    {
+      description: 'when handler is an async function',
+      expected: 'foo',
+      path: '/async-function-handler',
+      status: 200,
+    },
+
+    // NOTE: mix and matching of callbacks and promises is not recommended,
+    // nonetheless, we test some of the behaviour to match AWS execution precedence
+    {
+      description:
+        'when handler returns a callback but defines a callback parameter',
+      expected: 'Hello Promise!',
+      path: '/promise-with-defined-callback-handler',
+      status: 200,
+    },
+
+    {
+      description:
+        'when handler throws an expection in promise should return 502',
+      path: '/throw-exception-in-promise-handler',
+      status: 502,
+    },
+
+    {
+      description:
+        'when handler throws an expection before calling callback should return 502',
+      path: '/throw-exception-in-callback-handler',
+      status: 502,
+    },
+
+    {
+      description:
+        'when handler does not return any answer in promise should return 502',
+      path: '/no-answer-in-promise-handler',
+      status: 502,
+    },
+
+    {
+      description:
+        'when handler returns bad answer in promise should return 200',
+      path: '/bad-answer-in-promise-handler',
+      status: 200,
+    },
+
+    {
+      description:
+        'when handler returns bad answer in callback should return 200',
+      path: '/bad-answer-in-callback-handler',
+      status: 200,
+    },
+
+    {
+      description: 'test path variable with Prepend',
+      expected: '/test-path-variable-handler',
+      path: '/test-path-variable-handler',
+      status: 200,
+    },
+  ].forEach(({ description, expected, path, status }) => {
+    test(description, async () => {
+      const url = joinUrl(TEST_BASE_URL, path)
+
+      const response = await fetch(url)
+      expect(response.status).toEqual(status)
+
+      if (expected) {
+        const json = await response.json()
+        expect(json).toEqual(expected)
+      }
+    })
+  })
+})

tests/integration/handler/serverless.yml

@@ -148,3 +148,10 @@ functions:
           method: get
           path: bad-answer-in-callback-handler
     handler: handler.BadAnswerInCallbackHandler
+
+  TestPathVariable:
+    events:
+      - http:
+          method: get
+          path: test-path-variable-handler
+    handler: handler.TestPathVariable