Revert "add test case for clone function"

This reverts commit 88aa12e.

package.json

@@ -64,6 +64,7 @@
     "request": "^2.88.0",
     "rsvp": "^4.8.4",
     "sinon": "^6.1.4",
-    "updtr": "^3.1.0"
+    "updtr": "^3.1.0",
+    "rewire": "^5.0.0"
   }
 }

test/clone.test.js

@@ -0,0 +1,21 @@
+'use strict';
+
+const rewire = require('rewire');
+const _cloneOptions = rewire('../').__get__('_cloneOptions');
+const http = require('http');
+const t = require('chai').assert;
+
+describe('Clone option function', function () {
+  it('should not clone agent and non-own properties', function (done) {
+    const options = Object.create({ parent: true });
+    options.cloneable = { a: 1 };
+    options.agent =  new http.Agent({ keepAlive: true });
+    const cloned = _cloneOptions(options);
+    t.strictEqual(options.agent, cloned.agent);
+    t.notStrictEqual(options.cloneable, cloned.cloneable);
+    t.equal(options.cloneable.a, cloned.cloneable.a)
+    t.isUndefined(cloned.parent);
+    t.isTrue(options.parent);
+    done();
+  });
+});

test/strategies.test.js

@@ -1,7 +1,6 @@
 'use strict';
 
 var request = require('../');
-const http = require('http');
 var t = require('chai').assert;
 
 describe('RetryStrategies', function () {
@@ -44,38 +43,6 @@ describe('RetryStrategies', function () {
       });
     });
 
-    it('should not clone `options.agent`', function (done) {
-      const agent = new http.Agent({ keepAlive: true });
-      const cloneable = { a: true };
-      var strategy = function (err, response, body, options) {
-        options.url = 'http://www.filltext.com/?rows=1&err=200'; //overwrite url to return 200
-        t.strictEqual(agent, options.agent);
-        t.deepEqual(cloneable, options.cloneable);
-        t.notEqual(cloneable, options.cloneable);
-        return {
-          mustRetry: true,
-          options: options,
-        };
-      };
-
-      request({
-        url: 'http://www.filltext.com/?rows=1&err=500', // returns a 500 status
-        maxAttempts: 3,
-        agent: agent,
-        retryDelay: 100,
-        cloneable: cloneable,
-        retryStrategy: strategy
-      }, function(err, response, body) {
-        if(err) done(err);
-
-        t.strictEqual(200, response.statusCode);
-        t.strictEqual(agent, this.options.agent);
-        t.deepEqual(cloneable, this.options.cloneable);
-        t.notEqual(cloneable, this.options.cloneable);
-        done();
-      });
-    });
-
     it('should not overwrite `options` object if strategy did not returned it', function (done) {
       var strategy = function (err, response, body, options) {
         options.url = 'http://www.filltext.com/?rows=1&err=200'; //overwrite url to return 200