diff --git a/test/built-ins/RegExp/named-groups/unicode-property-names.js b/test/built-ins/RegExp/named-groups/unicode-property-names.js
index c12df27828..27bf125746 100644
--- a/test/built-ins/RegExp/named-groups/unicode-property-names.js
+++ b/test/built-ins/RegExp/named-groups/unicode-property-names.js
@@ -23,6 +23,8 @@ assert(/(?<a\uD801\uDCA4>.)/u.test("a"), "\\u Lead \\u Trail");
 assert(/(?<\u0041>.)/u.test("a"), "\\u NonSurrogate");
 assert(/(?<\u{0041}>.)/u.test("a"), "\\u{ Non-surrogate }");
 assert(/(?<a\u{104A4}>.)/u.test("a"), "\\u{ Surrogate, ID_Continue }");
+assert(RegExp("(?<\u{0041}>.)", "u").test("a"), "Non-surrogate");
+assert(RegExp("(?<a\u{104A4}>.)", "u").test("a"), "Surrogate,ID_Continue");
 assert((/(?<\u{0041}>.)/u).test("a"), "Non-surrogate");
 assert(/(?<a\u{104A4}>.)/u.test("a"), "Surrogate, ID_Continue");
 assert(RegExp("(?<\\u0041>.)", "u").test("a"), "Non-surrogate");
diff --git a/test/language/literals/regexp/named-groups/invalid-dangling-groupname-5.js b/test/language/literals/regexp/named-groups/invalid-dangling-groupname-5.js
new file mode 100644
index 0000000000..582bf29d8a
--- /dev/null
+++ b/test/language/literals/regexp/named-groups/invalid-dangling-groupname-5.js
@@ -0,0 +1,20 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Group reference must have corresponding group.
+info: |
+  It is a Syntax Error if the enclosing Pattern does not contain a
+  GroupSpecifier with an enclosed RegExpIdentifierName whose StringValue
+  equals the StringValue of the RegExpIdentifierName of this production's
+  GroupName.
+esid: sec-patterns-static-semantics-early-errors
+negative:
+  phase: parse
+  type: SyntaxError
+features: [regexp-named-groups]
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+/\k<a>(?<b>x)/;
diff --git a/test/language/literals/regexp/named-groups/invalid-lone-surrogate-groupname.js b/test/language/literals/regexp/named-groups/invalid-lone-surrogate-groupname.js
new file mode 100644
index 0000000000..7be757996b
--- /dev/null
+++ b/test/language/literals/regexp/named-groups/invalid-lone-surrogate-groupname.js
@@ -0,0 +1,13 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Lone surrogates in RegExp group names
+esid: prod-GroupSpecifier
+features: [regexp-named-groups]
+---*/
+
+assert.throws(SyntaxError, () => eval("/(?<a\uD801>.)/"), "Lead");
+assert.throws(SyntaxError, () => eval("/(?<a\uDCA4>.)/"), "Trail");
+assert.throws(SyntaxError, () => eval("/(?<a\uD801>.)/u"), "Lead with u flag");
+assert.throws(SyntaxError, () => eval("/(?<a\uDCA4>.)/u"), "Trail with u flag");
diff --git a/test/language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-3.js b/test/language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-3.js
deleted file mode 100644
index 38f70fc6de..0000000000
--- a/test/language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-3.js
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2017 the V8 project authors. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-description: GroupSpecifier must be identifier-like.
-esid: prod-GroupSpecifier
-negative:
-  phase: parse
-  type: SyntaxError
-features: [regexp-named-groups]
----*/
-
-throw "Test262: This statement should not be evaluated.";
-
-/(?<a\uDCA4>.)/;
diff --git a/test/language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-2.js b/test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier-2.js
similarity index 77%
rename from test/language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-2.js
rename to test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier-2.js
index e840db0553..7d58dc86b0 100644
--- a/test/language/literals/regexp/named-groups/invalid-non-id-continue-groupspecifier-2.js
+++ b/test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier-2.js
@@ -2,7 +2,7 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-description: GroupSpecifier must be identifier-like.
+description: \u{} escapes in GroupSpecifier allowed only in Unicode mode
 esid: prod-GroupSpecifier
 negative:
   phase: parse
@@ -12,4 +12,4 @@ features: [regexp-named-groups]
 
 throw "Test262: This statement should not be evaluated.";
 
-/(?<a\uD801>.)/;
+/(?<\u{03C0}>a)/;
diff --git a/test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier.js b/test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier.js
index 6dfd5e5755..53f7b96bf6 100644
--- a/test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier.js
+++ b/test/language/literals/regexp/named-groups/invalid-u-escape-in-groupspecifier.js
@@ -12,4 +12,4 @@ features: [regexp-named-groups]
 
 throw "Test262: This statement should not be evaluated.";
 
-/(?<\u{0041}>a)/;
+/(?<\u{0041}>.)/;