test: case for "." path handling

test/e2e/express.spec.ts

@@ -35,7 +35,7 @@ describe('express()', function () {
   it('should respect express views(string)', function (done) {
     app.set('views', views)
     request(app).get('/include/bar')
-      .expect('bar')
+      .expect('BAR')
       .expect(200, done)
   })
   it('should pass error when file not found', function (done) {
@@ -63,7 +63,7 @@ describe('express()', function () {
   it('should respect express views (Array) when lookup', function (done) {
     app.set('views', [views, partials])
     request(app).get('/include/bar')
-      .expect('bar')
+      .expect('BAR')
       .expect(200, done)
   })
 })

test/e2e/render-file.spec.ts

@@ -52,4 +52,14 @@ describe('#renderFile()', function () {
     })
     return expect(engine.renderFile('/not/exist.html')).rejects.toThrow(/Failed to lookup "\/not\/exist.html" in "\/boo,\/root\/"/)
   })
+  it('should handle "." as cwd', async () => {
+    engine = new Liquid({
+      root: ['.'],
+      extname: '.html'
+    })
+    process.chdir(resolve(__dirname, '../stub/views'))
+    await expect(engine.renderFile('bar')).resolves.toEqual('BAR')
+    process.chdir(resolve(__dirname, '../stub/partials'))
+    await expect(engine.renderFile('bar')).resolves.toEqual('bar')
+  })
 })

test/stub/views/bar.html

@@ -1 +1 @@
-bar
+BAR