diff --git a/test/fixtures/br.json.gz b/test/fixtures/br.json.gz
new file mode 100644
index 0000000..89b085d
Binary files /dev/null and b/test/fixtures/br.json.gz differ
diff --git a/test/fixtures/index.html/index b/test/fixtures/index.html/index
new file mode 100644
index 0000000..2fa59a7
--- /dev/null
+++ b/test/fixtures/index.html/index
@@ -0,0 +1 @@
+text index
\ No newline at end of file
diff --git a/test/fixtures/world/world b/test/fixtures/world/world
new file mode 100644
index 0000000..3e575fa
--- /dev/null
+++ b/test/fixtures/world/world
@@ -0,0 +1 @@
+html index
\ No newline at end of file
diff --git a/test/index.js b/test/index.js
index f1f9c6a..d72a503 100644
--- a/test/index.js
+++ b/test/index.js
@@ -180,6 +180,34 @@ describe('send(ctx, file)', function () {
         .expect('html index', done)
       })
     })
+
+    describe('when the index file is not present', function () {
+      it('should 404 if the index is a directory', function (done) {
+        const app = new Koa()
+
+        app.use(async (ctx) => {
+          const opts = { root: 'test', index: 'index', extensions:['html', 'htm'] }
+          await send(ctx, 'fixtures/', opts)
+        })
+
+        request(app.listen())
+        .get('/')
+        .expect(404, done)
+      })
+
+      it('should 404 if the index is a directory', function (done) {
+        const app = new Koa()
+
+        app.use(async (ctx) => {
+          const opts = { root: 'test', index: 'world' }
+          await send(ctx, 'fixtures/', opts)
+        })
+
+        request(app.listen())
+        .get('/')
+        .expect(404, done)
+      })
+    })
   })
 
   describe('when path is not a file', function () {
@@ -467,6 +495,21 @@ describe('send(ctx, file)', function () {
         .expect('{ "name": "tobi" }')
         .expect(200, done)
       })
+
+      it('should return .gz path when brotli is unavailable', function (done) {
+        const app = new Koa()
+
+        app.use(async (ctx) => {
+          await send(ctx, '/test/fixtures/br.json')
+        })
+
+        request(app.listen())
+        .get('/')
+        .set('Accept-Encoding', 'br, gzip, deflate, identity')
+        .expect('Content-Length', '48')
+        .expect('{ "name": "tobi" }')
+        .expect(200, done)
+      })
     })
 
     describe('and max age is specified', function () {