Add Robot_JoyIt driver

node_modules/qs/test/parse.js

@@ -1,10 +1,18 @@
 'use strict';
 
 var test = require('tape');
+var hasPropertyDescriptors = require('has-property-descriptors')();
+var iconv = require('iconv-lite');
+var mockProperty = require('mock-property');
+var hasOverrideMistake = require('has-override-mistake')();
+var SaferBuffer = require('safer-buffer').Buffer;
+var v = require('es-value-fixtures');
+var inspect = require('object-inspect');
+var emptyTestCases = require('./empty-keys-cases').emptyTestCases;
+var hasProto = require('has-proto')();
+
 var qs = require('../');
 var utils = require('../lib/utils');
-var iconv = require('iconv-lite');
-var SaferBuffer = require('safer-buffer').Buffer;
 
 test('parse()', function (t) {
     t.test('parses a simple string', function (st) {
@@ -32,41 +40,156 @@ test('parse()', function (t) {
         st.end();
     });
 
-    t.test('arrayFormat: brackets allows only explicit arrays', function (st) {
-        st.deepEqual(qs.parse('a[]=b&a[]=c', { arrayFormat: 'brackets' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a[0]=b&a[1]=c', { arrayFormat: 'brackets' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a=b,c', { arrayFormat: 'brackets' }), { a: 'b,c' });
-        st.deepEqual(qs.parse('a=b&a=c', { arrayFormat: 'brackets' }), { a: ['b', 'c'] });
+    t.test('comma: false', function (st) {
+        st.deepEqual(qs.parse('a[]=b&a[]=c'), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a[0]=b&a[1]=c'), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a=b,c'), { a: 'b,c' });
+        st.deepEqual(qs.parse('a=b&a=c'), { a: ['b', 'c'] });
         st.end();
     });
 
-    t.test('arrayFormat: indices allows only indexed arrays', function (st) {
-        st.deepEqual(qs.parse('a[]=b&a[]=c', { arrayFormat: 'indices' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a[0]=b&a[1]=c', { arrayFormat: 'indices' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a=b,c', { arrayFormat: 'indices' }), { a: 'b,c' });
-        st.deepEqual(qs.parse('a=b&a=c', { arrayFormat: 'indices' }), { a: ['b', 'c'] });
-        st.end();
-    });
-
-    t.test('arrayFormat: comma allows only comma-separated arrays', function (st) {
-        st.deepEqual(qs.parse('a[]=b&a[]=c', { arrayFormat: 'comma' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a[0]=b&a[1]=c', { arrayFormat: 'comma' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a=b,c', { arrayFormat: 'comma' }), { a: 'b,c' });
-        st.deepEqual(qs.parse('a=b&a=c', { arrayFormat: 'comma' }), { a: ['b', 'c'] });
-        st.end();
-    });
-
-    t.test('arrayFormat: repeat allows only repeated values', function (st) {
-        st.deepEqual(qs.parse('a[]=b&a[]=c', { arrayFormat: 'repeat' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a[0]=b&a[1]=c', { arrayFormat: 'repeat' }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a=b,c', { arrayFormat: 'repeat' }), { a: 'b,c' });
-        st.deepEqual(qs.parse('a=b&a=c', { arrayFormat: 'repeat' }), { a: ['b', 'c'] });
+    t.test('comma: true', function (st) {
+        st.deepEqual(qs.parse('a[]=b&a[]=c', { comma: true }), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a[0]=b&a[1]=c', { comma: true }), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a=b,c', { comma: true }), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a=b&a=c', { comma: true }), { a: ['b', 'c'] });
         st.end();
     });
 
     t.test('allows enabling dot notation', function (st) {
         st.deepEqual(qs.parse('a.b=c'), { 'a.b': 'c' });
         st.deepEqual(qs.parse('a.b=c', { allowDots: true }), { a: { b: 'c' } });
+
+        st.end();
+    });
+
+    t.test('decode dot keys correctly', function (st) {
+        st.deepEqual(
+            qs.parse('name%252Eobj.first=John&name%252Eobj.last=Doe', { allowDots: false, decodeDotInKeys: false }),
+            { 'name%2Eobj.first': 'John', 'name%2Eobj.last': 'Doe' },
+            'with allowDots false and decodeDotInKeys false'
+        );
+        st.deepEqual(
+            qs.parse('name.obj.first=John&name.obj.last=Doe', { allowDots: true, decodeDotInKeys: false }),
+            { name: { obj: { first: 'John', last: 'Doe' } } },
+            'with allowDots false and decodeDotInKeys false'
+        );
+        st.deepEqual(
+            qs.parse('name%252Eobj.first=John&name%252Eobj.last=Doe', { allowDots: true, decodeDotInKeys: false }),
+            { 'name%2Eobj': { first: 'John', last: 'Doe' } },
+            'with allowDots true and decodeDotInKeys false'
+        );
+        st.deepEqual(
+            qs.parse('name%252Eobj.first=John&name%252Eobj.last=Doe', { allowDots: true, decodeDotInKeys: true }),
+            { 'name.obj': { first: 'John', last: 'Doe' } },
+            'with allowDots true and decodeDotInKeys true'
+        );
+
+        st.deepEqual(
+            qs.parse(
+                'name%252Eobj%252Esubobject.first%252Egodly%252Ename=John&name%252Eobj%252Esubobject.last=Doe',
+                { allowDots: false, decodeDotInKeys: false }
+            ),
+            { 'name%2Eobj%2Esubobject.first%2Egodly%2Ename': 'John', 'name%2Eobj%2Esubobject.last': 'Doe' },
+            'with allowDots false and decodeDotInKeys false'
+        );
+        st.deepEqual(
+            qs.parse(
+                'name.obj.subobject.first.godly.name=John&name.obj.subobject.last=Doe',
+                { allowDots: true, decodeDotInKeys: false }
+            ),
+            { name: { obj: { subobject: { first: { godly: { name: 'John' } }, last: 'Doe' } } } },
+            'with allowDots true and decodeDotInKeys false'
+        );
+        st.deepEqual(
+            qs.parse(
+                'name%252Eobj%252Esubobject.first%252Egodly%252Ename=John&name%252Eobj%252Esubobject.last=Doe',
+                { allowDots: true, decodeDotInKeys: true }
+            ),
+            { 'name.obj.subobject': { 'first.godly.name': 'John', last: 'Doe' } },
+            'with allowDots true and decodeDotInKeys true'
+        );
+        st.deepEqual(
+            qs.parse('name%252Eobj.first=John&name%252Eobj.last=Doe'),
+            { 'name%2Eobj.first': 'John', 'name%2Eobj.last': 'Doe' },
+            'with allowDots and decodeDotInKeys undefined'
+        );
+
+        st.end();
+    });
+
+    t.test('decodes dot in key of object, and allow enabling dot notation when decodeDotInKeys is set to true and allowDots is undefined', function (st) {
+        st.deepEqual(
+            qs.parse(
+                'name%252Eobj%252Esubobject.first%252Egodly%252Ename=John&name%252Eobj%252Esubobject.last=Doe',
+                { decodeDotInKeys: true }
+            ),
+            { 'name.obj.subobject': { 'first.godly.name': 'John', last: 'Doe' } },
+            'with allowDots undefined and decodeDotInKeys true'
+        );
+
+        st.end();
+    });
+
+    t.test('throws when decodeDotInKeys is not of type boolean', function (st) {
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { decodeDotInKeys: 'foobar' }); },
+            TypeError
+        );
+
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { decodeDotInKeys: 0 }); },
+            TypeError
+        );
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { decodeDotInKeys: NaN }); },
+            TypeError
+        );
+
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { decodeDotInKeys: null }); },
+            TypeError
+        );
+
+        st.end();
+    });
+
+    t.test('allows empty arrays in obj values', function (st) {
+        st.deepEqual(qs.parse('foo[]&bar=baz', { allowEmptyArrays: true }), { foo: [], bar: 'baz' });
+        st.deepEqual(qs.parse('foo[]&bar=baz', { allowEmptyArrays: false }), { foo: [''], bar: 'baz' });
+
+        st.end();
+    });
+
+    t.test('throws when allowEmptyArrays is not of type boolean', function (st) {
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { allowEmptyArrays: 'foobar' }); },
+            TypeError
+        );
+
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { allowEmptyArrays: 0 }); },
+            TypeError
+        );
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { allowEmptyArrays: NaN }); },
+            TypeError
+        );
+
+        st['throws'](
+            function () { qs.parse('foo[]&bar=baz', { allowEmptyArrays: null }); },
+            TypeError
+        );
+
+        st.end();
+    });
+
+    t.test('allowEmptyArrays + strictNullHandling', function (st) {
+        st.deepEqual(
+            qs.parse('testEmptyArray[]', { strictNullHandling: true, allowEmptyArrays: true }),
+            { testEmptyArray: [] }
+        );
+
         st.end();
     });
 
@@ -112,11 +235,11 @@ test('parse()', function (t) {
         st.deepEqual(qs.parse('a=b&a[0]=c'), { a: ['b', 'c'] });
 
         st.deepEqual(qs.parse('a[1]=b&a=c', { arrayLimit: 20 }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a[]=b&a=c', { arrayLimit: 0 }), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a[]=b&a=c', { arrayLimit: 0 }), { a: { 0: 'b', 1: 'c' } });
         st.deepEqual(qs.parse('a[]=b&a=c'), { a: ['b', 'c'] });
 
         st.deepEqual(qs.parse('a=b&a[1]=c', { arrayLimit: 20 }), { a: ['b', 'c'] });
-        st.deepEqual(qs.parse('a=b&a[]=c', { arrayLimit: 0 }), { a: ['b', 'c'] });
+        st.deepEqual(qs.parse('a=b&a[]=c', { arrayLimit: 0 }), { a: { 0: 'b', 1: 'c' } });
         st.deepEqual(qs.parse('a=b&a[]=c'), { a: ['b', 'c'] });
 
         st.end();
@@ -241,7 +364,7 @@ test('parse()', function (t) {
         );
         st.deepEqual(
             qs.parse('a[]=b&a[]&a[]=c&a[]=', { strictNullHandling: true, arrayLimit: 0 }),
-            { a: ['b', null, 'c', ''] },
+            { a: { 0: 'b', 1: null, 2: 'c', 3: '' } },
             'with arrayLimit 0 + array brackets: null then empty string works'
         );
 
@@ -252,7 +375,7 @@ test('parse()', function (t) {
         );
         st.deepEqual(
             qs.parse('a[]=b&a[]=&a[]=c&a[]', { strictNullHandling: true, arrayLimit: 0 }),
-            { a: ['b', '', 'c', null] },
+            { a: { 0: 'b', 1: '', 2: 'c', 3: null } },
             'with arrayLimit 0 + array brackets: empty string then null works'
         );
 
@@ -321,15 +444,15 @@ test('parse()', function (t) {
         st.end();
     });
 
-    t.test('should not throw when a native prototype has an enumerable property', function (st) {
-        Object.prototype.crash = '';
-        Array.prototype.crash = '';
+    t.test('does not throw when a native prototype has an enumerable property', function (st) {
+        st.intercept(Object.prototype, 'crash', { value: '' });
+        st.intercept(Array.prototype, 'crash', { value: '' });
+
         st.doesNotThrow(qs.parse.bind(null, 'a=b'));
         st.deepEqual(qs.parse('a=b'), { a: 'b' });
         st.doesNotThrow(qs.parse.bind(null, 'a[][b]=c'));
         st.deepEqual(qs.parse('a[][b]=c'), { a: [{ b: 'c' }] });
-        delete Object.prototype.crash;
-        delete Array.prototype.crash;
+
         st.end();
     });
 
@@ -360,8 +483,14 @@ test('parse()', function (t) {
 
     t.test('allows overriding array limit', function (st) {
         st.deepEqual(qs.parse('a[0]=b', { arrayLimit: -1 }), { a: { 0: 'b' } });
+        st.deepEqual(qs.parse('a[0]=b', { arrayLimit: 0 }), { a: ['b'] });
+
         st.deepEqual(qs.parse('a[-1]=b', { arrayLimit: -1 }), { a: { '-1': 'b' } });
+        st.deepEqual(qs.parse('a[-1]=b', { arrayLimit: 0 }), { a: { '-1': 'b' } });
+
+        st.deepEqual(qs.parse('a[0]=b&a[1]=c', { arrayLimit: -1 }), { a: { 0: 'b', 1: 'c' } });
         st.deepEqual(qs.parse('a[0]=b&a[1]=c', { arrayLimit: 0 }), { a: { 0: 'b', 1: 'c' } });
+
         st.end();
     });
 
@@ -452,6 +581,15 @@ test('parse()', function (t) {
         st.end();
     });
 
+    t.test('parses url-encoded brackets holds array of arrays when having two parts of strings with comma as array divider', function (st) {
+        st.deepEqual(qs.parse('foo%5B%5D=1,2,3&foo%5B%5D=4,5,6', { comma: true }), { foo: [['1', '2', '3'], ['4', '5', '6']] });
+        st.deepEqual(qs.parse('foo%5B%5D=1,2,3&foo%5B%5D=', { comma: true }), { foo: [['1', '2', '3'], ''] });
+        st.deepEqual(qs.parse('foo%5B%5D=1,2,3&foo%5B%5D=,', { comma: true }), { foo: [['1', '2', '3'], ['', '']] });
+        st.deepEqual(qs.parse('foo%5B%5D=1,2,3&foo%5B%5D=a', { comma: true }), { foo: [['1', '2', '3'], 'a'] });
+
+        st.end();
+    });
+
     t.test('parses comma delimited array while having percent-encoded comma treated as normal text', function (st) {
         st.deepEqual(qs.parse('foo=a%2Cb', { comma: true }), { foo: 'a,b' });
         st.deepEqual(qs.parse('foo=a%2C%20b,d', { comma: true }), { foo: ['a, b', 'd'] });
@@ -499,10 +637,12 @@ test('parse()', function (t) {
     });
 
     t.test('does not blow up when Buffer global is missing', function (st) {
-        var tempBuffer = global.Buffer;
-        delete global.Buffer;
+        var restore = mockProperty(global, 'Buffer', { 'delete': true });
+
         var result = qs.parse('a=b&c=d');
-        global.Buffer = tempBuffer;
+
+        restore();
+
         st.deepEqual(result, { a: 'b', c: 'd' });
         st.end();
     });
@@ -552,9 +692,8 @@ test('parse()', function (t) {
         st.end();
     });
 
-    t.test('parses null objects correctly', { skip: !Object.create }, function (st) {
-        var a = Object.create(null);
-        a.b = 'c';
+    t.test('parses null objects correctly', { skip: !hasProto }, function (st) {
+        var a = { __proto__: null, b: 'c' };
 
         st.deepEqual(qs.parse(a), { b: 'c' });
         var result = qs.parse({ a: a });
@@ -601,6 +740,34 @@ test('parse()', function (t) {
         st.end();
     });
 
+    t.test('does not crash when the global Object prototype is frozen', { skip: !hasPropertyDescriptors || !hasOverrideMistake }, function (st) {
+        // We can't actually freeze the global Object prototype as that will interfere with other tests, and once an object is frozen, it
+        // can't be unfrozen. Instead, we add a new non-writable property to simulate this.
+        st.teardown(mockProperty(Object.prototype, 'frozenProp', { value: 'foo', nonWritable: true, nonEnumerable: true }));
+
+        st['throws'](
+            function () {
+                var obj = {};
+                obj.frozenProp = 'bar';
+            },
+            // node < 6 has a different error message
+            /^TypeError: Cannot assign to read only property 'frozenProp' of (?:object '#<Object>'|#<Object>)/,
+            'regular assignment of an inherited non-writable property throws'
+        );
+
+        var parsed;
+        st.doesNotThrow(
+            function () {
+                parsed = qs.parse('frozenProp', { allowPrototypes: false });
+            },
+            'parsing a nonwritable Object.prototype property does not throw'
+        );
+
+        st.deepEqual(parsed, {}, 'bare "frozenProp" results in {}');
+
+        st.end();
+    });
+
     t.test('params starting with a closing bracket', function (st) {
         st.deepEqual(qs.parse(']=toString'), { ']': 'toString' });
         st.deepEqual(qs.parse(']]=toString'), { ']]': 'toString' });
@@ -703,17 +870,25 @@ test('parse()', function (t) {
         st.end();
     });
 
-    t.test('can return null objects', { skip: !Object.create }, function (st) {
-        var expected = Object.create(null);
-        expected.a = Object.create(null);
-        expected.a.b = 'c';
-        expected.a.hasOwnProperty = 'd';
+    t.test('can return null objects', { skip: !hasProto }, function (st) {
+        var expected = {
+            __proto__: null,
+            a: {
+                __proto__: null,
+                b: 'c',
+                hasOwnProperty: 'd'
+            }
+        };
         st.deepEqual(qs.parse('a[b]=c&a[hasOwnProperty]=d', { plainObjects: true }), expected);
-        st.deepEqual(qs.parse(null, { plainObjects: true }), Object.create(null));
-        var expectedArray = Object.create(null);
-        expectedArray.a = Object.create(null);
-        expectedArray.a[0] = 'b';
-        expectedArray.a.c = 'd';
+        st.deepEqual(qs.parse(null, { plainObjects: true }), { __proto__: null });
+        var expectedArray = {
+            __proto__: null,
+            a: {
+                __proto__: null,
+                0: 'b',
+                c: 'd'
+            }
+        };
         st.deepEqual(qs.parse('a[]=b&a[c]=d', { plainObjects: true }), expectedArray);
         st.end();
     });
@@ -790,7 +965,7 @@ test('parse()', function (t) {
         st.end();
     });
 
-    t.test('should ignore an utf8 sentinel with an unknown value', function (st) {
+    t.test('ignores an utf8 sentinel with an unknown value', function (st) {
         st.deepEqual(qs.parse('utf8=foo&' + urlEncodedOSlashInUtf8 + '=' + urlEncodedOSlashInUtf8, { charsetSentinel: true, charset: 'utf-8' }), { ø: 'ø' });
         st.end();
     });
@@ -821,6 +996,20 @@ test('parse()', function (t) {
         st.end();
     });
 
+    t.test('handles a custom decoder returning `null`, with a string key of `null`', function (st) {
+        st.deepEqual(
+            qs.parse('null=1&ToNull=2', {
+                decoder: function (str, defaultDecoder, charset) {
+                    return str === 'ToNull' ? null : defaultDecoder(str, defaultDecoder, charset);
+                }
+            }),
+            { 'null': '1' },
+            '"null" key is not overridden by `null` decoder result'
+        );
+
+        st.end();
+    });
+
     t.test('does not interpret numeric entities in iso-8859-1 when `interpretNumericEntities` is absent', function (st) {
         st.deepEqual(qs.parse('foo=' + urlEncodedNumSmiley, { charset: 'iso-8859-1' }), { foo: '&#9786;' });
         st.end();
@@ -831,6 +1020,15 @@ test('parse()', function (t) {
         st.end();
     });
 
+    t.test('interpretNumericEntities with comma:true and iso charset does not crash', function (st) {
+        st.deepEqual(
+            qs.parse('b&a[]=1,' + urlEncodedNumSmiley, { comma: true, charset: 'iso-8859-1', interpretNumericEntities: true }),
+            { b: '', a: ['1,☺'] }
+        );
+
+        st.end();
+    });
+
     t.test('does not interpret %uXXXX syntax in iso-8859-1 mode', function (st) {
         st.deepEqual(qs.parse('%u263A=%u263A', { charset: 'iso-8859-1' }), { '%u263A': '%u263A' });
         st.end();
@@ -851,5 +1049,348 @@ test('parse()', function (t) {
         st.end();
     });
 
+    t.test('parameter limit tests', function (st) {
+        st.test('does not throw error when within parameter limit', function (sst) {
+            var result = qs.parse('a=1&b=2&c=3', { parameterLimit: 5, throwOnLimitExceeded: true });
+            sst.deepEqual(result, { a: '1', b: '2', c: '3' }, 'parses without errors');
+            sst.end();
+        });
+
+        st.test('throws error when throwOnLimitExceeded is present but not boolean', function (sst) {
+            sst['throws'](
+                function () {
+                    qs.parse('a=1&b=2&c=3&d=4&e=5&f=6', { parameterLimit: 3, throwOnLimitExceeded: 'true' });
+                },
+                new TypeError('`throwOnLimitExceeded` option must be a boolean'),
+                'throws error when throwOnLimitExceeded is present and not boolean'
+            );
+            sst.end();
+        });
+
+        st.test('throws error when parameter limit exceeded', function (sst) {
+            sst['throws'](
+                function () {
+                    qs.parse('a=1&b=2&c=3&d=4&e=5&f=6', { parameterLimit: 3, throwOnLimitExceeded: true });
+                },
+                new RangeError('Parameter limit exceeded. Only 3 parameters allowed.'),
+                'throws error when parameter limit is exceeded'
+            );
+            sst.end();
+        });
+
+        st.test('silently truncates when throwOnLimitExceeded is not given', function (sst) {
+            var result = qs.parse('a=1&b=2&c=3&d=4&e=5', { parameterLimit: 3 });
+            sst.deepEqual(result, { a: '1', b: '2', c: '3' }, 'parses and truncates silently');
+            sst.end();
+        });
+
+        st.test('silently truncates when parameter limit exceeded without error', function (sst) {
+            var result = qs.parse('a=1&b=2&c=3&d=4&e=5', { parameterLimit: 3, throwOnLimitExceeded: false });
+            sst.deepEqual(result, { a: '1', b: '2', c: '3' }, 'parses and truncates silently');
+            sst.end();
+        });
+
+        st.test('allows unlimited parameters when parameterLimit set to Infinity', function (sst) {
+            var result = qs.parse('a=1&b=2&c=3&d=4&e=5&f=6', { parameterLimit: Infinity });
+            sst.deepEqual(result, { a: '1', b: '2', c: '3', d: '4', e: '5', f: '6' }, 'parses all parameters without truncation');
+            sst.end();
+        });
+
+        st.end();
+    });
+
+    t.test('array limit tests', function (st) {
+        st.test('does not throw error when array is within limit', function (sst) {
+            var result = qs.parse('a[]=1&a[]=2&a[]=3', { arrayLimit: 5, throwOnLimitExceeded: true });
+            sst.deepEqual(result, { a: ['1', '2', '3'] }, 'parses array without errors');
+            sst.end();
+        });
+
+        st.test('throws error when throwOnLimitExceeded is present but not boolean for array limit', function (sst) {
+            sst['throws'](
+                function () {
+                    qs.parse('a[]=1&a[]=2&a[]=3&a[]=4', { arrayLimit: 3, throwOnLimitExceeded: 'true' });
+                },
+                new TypeError('`throwOnLimitExceeded` option must be a boolean'),
+                'throws error when throwOnLimitExceeded is present and not boolean for array limit'
+            );
+            sst.end();
+        });
+
+        st.test('throws error when array limit exceeded', function (sst) {
+            sst['throws'](
+                function () {
+                    qs.parse('a[]=1&a[]=2&a[]=3&a[]=4', { arrayLimit: 3, throwOnLimitExceeded: true });
+                },
+                new RangeError('Array limit exceeded. Only 3 elements allowed in an array.'),
+                'throws error when array limit is exceeded'
+            );
+            sst.end();
+        });
+
+        st.test('converts array to object if length is greater than limit', function (sst) {
+            var result = qs.parse('a[1]=1&a[2]=2&a[3]=3&a[4]=4&a[5]=5&a[6]=6', { arrayLimit: 5 });
+
+            sst.deepEqual(result, { a: { 1: '1', 2: '2', 3: '3', 4: '4', 5: '5', 6: '6' } }, 'parses into object if array length is greater than limit');
+            sst.end();
+        });
+
+        st.end();
+    });
+
+    t.end();
+});
+
+test('parses empty keys', function (t) {
+    emptyTestCases.forEach(function (testCase) {
+        t.test('skips empty string key with ' + testCase.input, function (st) {
+            st.deepEqual(qs.parse(testCase.input), testCase.noEmptyKeys);
+
+            st.end();
+        });
+    });
+});
+
+test('`duplicates` option', function (t) {
+    v.nonStrings.concat('not a valid option').forEach(function (invalidOption) {
+        if (typeof invalidOption !== 'undefined') {
+            t['throws'](
+                function () { qs.parse('', { duplicates: invalidOption }); },
+                TypeError,
+                'throws on invalid option: ' + inspect(invalidOption)
+            );
+        }
+    });
+
+    t.deepEqual(
+        qs.parse('foo=bar&foo=baz'),
+        { foo: ['bar', 'baz'] },
+        'duplicates: default, combine'
+    );
+
+    t.deepEqual(
+        qs.parse('foo=bar&foo=baz', { duplicates: 'combine' }),
+        { foo: ['bar', 'baz'] },
+        'duplicates: combine'
+    );
+
+    t.deepEqual(
+        qs.parse('foo=bar&foo=baz', { duplicates: 'first' }),
+        { foo: 'bar' },
+        'duplicates: first'
+    );
+
+    t.deepEqual(
+        qs.parse('foo=bar&foo=baz', { duplicates: 'last' }),
+        { foo: 'baz' },
+        'duplicates: last'
+    );
+
+    t.end();
+});
+
+test('qs strictDepth option - throw cases', function (t) {
+    t.test('throws an exception when depth exceeds the limit with strictDepth: true', function (st) {
+        st['throws'](
+            function () {
+                qs.parse('a[b][c][d][e][f][g][h][i]=j', { depth: 1, strictDepth: true });
+            },
+            RangeError,
+            'throws RangeError'
+        );
+        st.end();
+    });
+
+    t.test('throws an exception for multiple nested arrays with strictDepth: true', function (st) {
+        st['throws'](
+            function () {
+                qs.parse('a[0][1][2][3][4]=b', { depth: 3, strictDepth: true });
+            },
+            RangeError,
+            'throws RangeError'
+        );
+        st.end();
+    });
+
+    t.test('throws an exception for nested objects and arrays with strictDepth: true', function (st) {
+        st['throws'](
+            function () {
+                qs.parse('a[b][c][0][d][e]=f', { depth: 3, strictDepth: true });
+            },
+            RangeError,
+            'throws RangeError'
+        );
+        st.end();
+    });
+
+    t.test('throws an exception for different types of values with strictDepth: true', function (st) {
+        st['throws'](
+            function () {
+                qs.parse('a[b][c][d][e]=true&a[b][c][d][f]=42', { depth: 3, strictDepth: true });
+            },
+            RangeError,
+            'throws RangeError'
+        );
+        st.end();
+    });
+
+});
+
+test('qs strictDepth option - non-throw cases', function (t) {
+    t.test('when depth is 0 and strictDepth true, do not throw', function (st) {
+        st.doesNotThrow(
+            function () {
+                qs.parse('a[b][c][d][e]=true&a[b][c][d][f]=42', { depth: 0, strictDepth: true });
+            },
+            RangeError,
+            'does not throw RangeError'
+        );
+        st.end();
+    });
+
+    t.test('parses successfully when depth is within the limit with strictDepth: true', function (st) {
+        st.doesNotThrow(
+            function () {
+                var result = qs.parse('a[b]=c', { depth: 1, strictDepth: true });
+                st.deepEqual(result, { a: { b: 'c' } }, 'parses correctly');
+            }
+        );
+        st.end();
+    });
+
+    t.test('does not throw an exception when depth exceeds the limit with strictDepth: false', function (st) {
+        st.doesNotThrow(
+            function () {
+                var result = qs.parse('a[b][c][d][e][f][g][h][i]=j', { depth: 1 });
+                st.deepEqual(result, { a: { b: { '[c][d][e][f][g][h][i]': 'j' } } }, 'parses with depth limit');
+            }
+        );
+        st.end();
+    });
+
+    t.test('parses successfully when depth is within the limit with strictDepth: false', function (st) {
+        st.doesNotThrow(
+            function () {
+                var result = qs.parse('a[b]=c', { depth: 1 });
+                st.deepEqual(result, { a: { b: 'c' } }, 'parses correctly');
+            }
+        );
+        st.end();
+    });
+
+    t.test('does not throw when depth is exactly at the limit with strictDepth: true', function (st) {
+        st.doesNotThrow(
+            function () {
+                var result = qs.parse('a[b][c]=d', { depth: 2, strictDepth: true });
+                st.deepEqual(result, { a: { b: { c: 'd' } } }, 'parses correctly');
+            }
+        );
+        st.end();
+    });
+});
+
+test('DOS', function (t) {
+    var arr = [];
+    for (var i = 0; i < 105; i++) {
+        arr[arr.length] = 'x';
+    }
+    var attack = 'a[]=' + arr.join('&a[]=');
+    var result = qs.parse(attack, { arrayLimit: 100 });
+
+    t.notOk(Array.isArray(result.a), 'arrayLimit is respected: result is an object, not an array');
+    t.equal(Object.keys(result.a).length, 105, 'all values are preserved');
+
+    t.end();
+});
+
+test('arrayLimit boundary conditions', function (t) {
+    t.test('exactly at the limit stays as array', function (st) {
+        var result = qs.parse('a[]=1&a[]=2&a[]=3', { arrayLimit: 3 });
+        st.ok(Array.isArray(result.a), 'result is an array when exactly at limit');
+        st.deepEqual(result.a, ['1', '2', '3'], 'all values present');
+        st.end();
+    });
+
+    t.test('one over the limit converts to object', function (st) {
+        var result = qs.parse('a[]=1&a[]=2&a[]=3&a[]=4', { arrayLimit: 3 });
+        st.notOk(Array.isArray(result.a), 'result is not an array when over limit');
+        st.deepEqual(result.a, { 0: '1', 1: '2', 2: '3', 3: '4' }, 'all values preserved as object');
+        st.end();
+    });
+
+    t.test('arrayLimit 1 with two values', function (st) {
+        var result = qs.parse('a[]=1&a[]=2', { arrayLimit: 1 });
+        st.notOk(Array.isArray(result.a), 'result is not an array');
+        st.deepEqual(result.a, { 0: '1', 1: '2' }, 'both values preserved');
+        st.end();
+    });
+
+    t.end();
+});
+
+test('mixed array and object notation', function (t) {
+    t.test('array brackets with object key - under limit', function (st) {
+        st.deepEqual(
+            qs.parse('a[]=b&a[c]=d'),
+            { a: { 0: 'b', c: 'd' } },
+            'mixing [] and [key] converts to object'
+        );
+        st.end();
+    });
+
+    t.test('array index with object key - under limit', function (st) {
+        st.deepEqual(
+            qs.parse('a[0]=b&a[c]=d'),
+            { a: { 0: 'b', c: 'd' } },
+            'mixing [0] and [key] produces object'
+        );
+        st.end();
+    });
+
+    t.test('plain value with array brackets - under limit', function (st) {
+        st.deepEqual(
+            qs.parse('a=b&a[]=c', { arrayLimit: 20 }),
+            { a: ['b', 'c'] },
+            'plain value combined with [] stays as array under limit'
+        );
+        st.end();
+    });
+
+    t.test('array brackets with plain value - under limit', function (st) {
+        st.deepEqual(
+            qs.parse('a[]=b&a=c', { arrayLimit: 20 }),
+            { a: ['b', 'c'] },
+            '[] combined with plain value stays as array under limit'
+        );
+        st.end();
+    });
+
+    t.test('plain value with array index - under limit', function (st) {
+        st.deepEqual(
+            qs.parse('a=b&a[0]=c', { arrayLimit: 20 }),
+            { a: ['b', 'c'] },
+            'plain value combined with [0] stays as array under limit'
+        );
+        st.end();
+    });
+
+    t.test('multiple plain values with duplicates combine', function (st) {
+        st.deepEqual(
+            qs.parse('a=b&a=c&a=d', { arrayLimit: 20 }),
+            { a: ['b', 'c', 'd'] },
+            'duplicate plain keys combine into array'
+        );
+        st.end();
+    });
+
+    t.test('multiple plain values exceeding limit', function (st) {
+        st.deepEqual(
+            qs.parse('a=b&a=c&a=d', { arrayLimit: 2 }),
+            { a: { 0: 'b', 1: 'c', 2: 'd' } },
+            'duplicate plain keys convert to object when exceeding limit'
+        );
+        st.end();
+    });
+
     t.end();
 });