diff --git a/test/parallel/test-whatwg-url-searchparams-append.js b/test/parallel/test-whatwg-url-searchparams-append.js
index 5ef92252be5d9e..44f49d20b09526 100644
--- a/test/parallel/test-whatwg-url-searchparams-append.js
+++ b/test/parallel/test-whatwg-url-searchparams-append.js
@@ -46,3 +46,10 @@ assert.strictEqual(params.get('third'), '',
 params.append('first', 10);
 assert.strictEqual(params.get('first'), '1',
                    'Search params object has name "first" with value "1"');
+
+assert.throws(() => {
+  params.append.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
+assert.throws(() => {
+  params.set('a');
+}, /^TypeError: "name" and "value" arguments must be specified$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-delete.js b/test/parallel/test-whatwg-url-searchparams-delete.js
index 71bb7487a75087..f39917e8e37712 100644
--- a/test/parallel/test-whatwg-url-searchparams-delete.js
+++ b/test/parallel/test-whatwg-url-searchparams-delete.js
@@ -41,6 +41,13 @@ params.delete('first');
 assert.strictEqual(false, params.has('first'),
                    'Search params object has no "first" name');
 
+assert.throws(() => {
+  params.delete.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
+assert.throws(() => {
+  params.delete();
+}, /^TypeError: "name" argument must be specified$/);
+
 // https://github.com/nodejs/node/issues/10480
 // Emptying searchParams should correctly update url's query
 {
diff --git a/test/parallel/test-whatwg-url-searchparams-entries.js b/test/parallel/test-whatwg-url-searchparams-entries.js
new file mode 100644
index 00000000000000..97f60ceb17fa29
--- /dev/null
+++ b/test/parallel/test-whatwg-url-searchparams-entries.js
@@ -0,0 +1,33 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const URLSearchParams = require('url').URLSearchParams;
+
+const params = new URLSearchParams('a=b&c=d');
+const entries = params.entries();
+assert.strictEqual(typeof entries[Symbol.iterator], 'function');
+assert.strictEqual(entries[Symbol.iterator](), entries);
+assert.deepStrictEqual(entries.next(), {
+  value: ['a', 'b'],
+  done: false
+});
+assert.deepStrictEqual(entries.next(), {
+  value: ['c', 'd'],
+  done: false
+});
+assert.deepStrictEqual(entries.next(), {
+  value: undefined,
+  done: true
+});
+assert.deepStrictEqual(entries.next(), {
+  value: undefined,
+  done: true
+});
+
+assert.throws(() => {
+  entries.next.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParamsIterator$/);
+assert.throws(() => {
+  params.entries.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-foreach.js b/test/parallel/test-whatwg-url-searchparams-foreach.js
index 7e6b6222a8f101..6adbb5789b0c11 100644
--- a/test/parallel/test-whatwg-url-searchparams-foreach.js
+++ b/test/parallel/test-whatwg-url-searchparams-foreach.js
@@ -12,7 +12,7 @@ let a, b, i;
 const params = new URLSearchParams('a=1&b=2&c=3');
 const keys = [];
 const values = [];
-params.forEach(function(value, key) {
+params.forEach((value, key) => {
   keys.push(key);
   values.push(value);
 });
@@ -37,3 +37,7 @@ b = a.searchParams;
 for (i of b) {
   common.fail('should not be reached');
 }
+
+assert.throws(() => {
+  params.forEach.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-get.js b/test/parallel/test-whatwg-url-searchparams-get.js
index 7ddfb67e8b8a7b..95c3f47df5eabb 100644
--- a/test/parallel/test-whatwg-url-searchparams-get.js
+++ b/test/parallel/test-whatwg-url-searchparams-get.js
@@ -29,3 +29,10 @@ assert.strictEqual(params.get('third'), '',
                    'Search params object has name "third" with empty value.');
 assert.strictEqual(params.get('fourth'), null,
                    'Search params object has no "fourth" name and value.');
+
+assert.throws(() => {
+  params.get.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
+assert.throws(() => {
+  params.get();
+}, /^TypeError: "name" argument must be specified$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-getall.js b/test/parallel/test-whatwg-url-searchparams-getall.js
index 34805164ab1b38..52f581c0158a90 100644
--- a/test/parallel/test-whatwg-url-searchparams-getall.js
+++ b/test/parallel/test-whatwg-url-searchparams-getall.js
@@ -36,3 +36,10 @@ assert(matches && matches.length == 1,
        'Search params object has values for name "a"');
 assert.deepStrictEqual(matches, ['one'],
                        'Search params object has expected name "a" values');
+
+assert.throws(() => {
+  params.getAll.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
+assert.throws(() => {
+  params.getAll();
+}, /^TypeError: "name" argument must be specified$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-has.js b/test/parallel/test-whatwg-url-searchparams-has.js
index cd8901da2398b7..bab34515d99ac2 100644
--- a/test/parallel/test-whatwg-url-searchparams-has.js
+++ b/test/parallel/test-whatwg-url-searchparams-has.js
@@ -33,3 +33,10 @@ assert.strictEqual(false, params.has('d'),
 params.delete('first');
 assert.strictEqual(false, params.has('first'),
                    'Search params object has no name "first"');
+
+assert.throws(() => {
+  params.has.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
+assert.throws(() => {
+  params.has();
+}, /^TypeError: "name" argument must be specified$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-keys.js b/test/parallel/test-whatwg-url-searchparams-keys.js
new file mode 100644
index 00000000000000..d538422654065c
--- /dev/null
+++ b/test/parallel/test-whatwg-url-searchparams-keys.js
@@ -0,0 +1,34 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const URLSearchParams = require('url').URLSearchParams;
+
+const params = new URLSearchParams('a=b&c=d');
+const keys = params.keys();
+
+assert.strictEqual(typeof keys[Symbol.iterator], 'function');
+assert.strictEqual(keys[Symbol.iterator](), keys);
+assert.deepStrictEqual(keys.next(), {
+  value: 'a',
+  done: false
+});
+assert.deepStrictEqual(keys.next(), {
+  value: 'c',
+  done: false
+});
+assert.deepStrictEqual(keys.next(), {
+  value: undefined,
+  done: true
+});
+assert.deepStrictEqual(keys.next(), {
+  value: undefined,
+  done: true
+});
+
+assert.throws(() => {
+  keys.next.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParamsIterator$/);
+assert.throws(() => {
+  params.keys.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-set.js b/test/parallel/test-whatwg-url-searchparams-set.js
index 5ab2bbe8d8ac39..c818cc9f71af48 100644
--- a/test/parallel/test-whatwg-url-searchparams-set.js
+++ b/test/parallel/test-whatwg-url-searchparams-set.js
@@ -32,3 +32,10 @@ assert.strictEqual(true, params.has('a'),
                    'Search params object has name "a"');
 assert.strictEqual(params.get('a'), '4',
                    'Search params object has name "a" with value "4"');
+
+assert.throws(() => {
+  params.set.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
+assert.throws(() => {
+  params.set('a');
+}, /^TypeError: "name" and "value" arguments must be specified$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-stringifier.js b/test/parallel/test-whatwg-url-searchparams-stringifier.js
index c591425461a9d1..ba3f42683b46e6 100644
--- a/test/parallel/test-whatwg-url-searchparams-stringifier.js
+++ b/test/parallel/test-whatwg-url-searchparams-stringifier.js
@@ -110,3 +110,6 @@ assert.strictEqual(params + '', 'a%F0%9F%92%A9b=c');
 // The lone '=' _does_ survive the roundtrip.
 params = new URLSearchParams('a=&a=b');
 assert.strictEqual(params.toString(), 'a=&a=b');
+assert.throws(() => {
+  params.toString.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);
diff --git a/test/parallel/test-whatwg-url-searchparams-values.js b/test/parallel/test-whatwg-url-searchparams-values.js
new file mode 100644
index 00000000000000..36aa1da9f057bb
--- /dev/null
+++ b/test/parallel/test-whatwg-url-searchparams-values.js
@@ -0,0 +1,34 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const URLSearchParams = require('url').URLSearchParams;
+
+const params = new URLSearchParams('a=b&c=d');
+const values = params.values();
+
+assert.strictEqual(typeof values[Symbol.iterator], 'function');
+assert.strictEqual(values[Symbol.iterator](), values);
+assert.deepStrictEqual(values.next(), {
+  value: 'b',
+  done: false
+});
+assert.deepStrictEqual(values.next(), {
+  value: 'd',
+  done: false
+});
+assert.deepStrictEqual(values.next(), {
+  value: undefined,
+  done: true
+});
+assert.deepStrictEqual(values.next(), {
+  value: undefined,
+  done: true
+});
+
+assert.throws(() => {
+  values.next.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParamsIterator$/);
+assert.throws(() => {
+  params.values.call(undefined);
+}, /^TypeError: Value of `this` is not a URLSearchParams$/);