test: various non-integer

Author: shivarm

test/req.range.js

@@ -64,6 +64,41 @@ describe('req', function(){
         .expect(/TypeError: size must be a non-negative integer to req\.range/);
     });
 
+    it('should throw TypeError for various invalid size types', function () {
+      var app = express();
+      var testCases = [
+        { value: 'string', label: 'string' },
+        { value: {}, label: 'object' },
+        { value: [], label: 'array' },
+        { value: null, label: 'null' },
+        { value: undefined, label: 'undefined' },
+        { value: 1.5, label: 'float' },
+        { value: NaN, label: 'NaN' },
+        { value: Infinity, label: 'Infinity' }
+      ];
+
+      app.use(function (req, res) {
+        var type = req.query.type;
+        var value = testCases.find(c => c.label === type).value;
+
+        try {
+          req.range(value);
+          res.send('no error');
+        } catch (err) {
+          res.status(500).send(err.name + ': ' + err.message);
+        }
+      });
+
+      // Run all tests in sequence
+      return Promise.all(testCases.map(function (testCase) {
+        return request(app)
+      .get('/?type=' + testCase.label)
+      .set('Range', 'bytes=0-10')
+      .expect(500)
+      .expect(/TypeError: size must be a non-negative integer to req\.range/);
+      }));
+    });
+
     it('should have a .type', function (done) {
       var app = express()