diff --git a/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T1.js b/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T1.js
index 87da8608e0..8415ba0cfd 100644
--- a/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T1.js
+++ b/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T1.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.4_A4.12_T1
 description: x and y are string primitives
 ---*/
@@ -44,3 +44,25 @@ if (("a\u0000b" >= "a\u0000a") !== true) {
 if (("aa" >= "aB") !== true) {
   throw new Test262Error('#7: ("aa" >= aB") === true');
 }
+
+//CHECK#8
+if (("\u{10000}" >= "\uD7FF") !== true) {
+  throw new Test262Error('#8: ("\\u{10000}" >= "\\uD7FF") === true');
+}
+
+//CHECK#9
+if (("\uDC00" >= "\uD800") !== true) {
+  throw new Test262Error('#9: ("\\uDC00" >= "\\uD800") === true');
+}
+
+//CHECK#10
+// String comparison is done by code units, rather than by code points.
+// "\u{10000}" is equivalent to "\uD800\uDC00"
+if (("\u{10000}" >= "\uFFFF") !== false) {
+  throw new Test262Error('#10: ("\\u{10000}" >= "\\uFFFF") === false');
+}
+
+//CHECK#11
+if (("\u{12345}" >= "\u{10000}") !== true) {
+  throw new Test262Error('#11: ("\\u{12345}" >= "\\u{10000}") === true');
+}
diff --git a/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T2.js b/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T2.js
index 691c386bec..322eabedd6 100644
--- a/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T2.js
+++ b/test/language/expressions/greater-than-or-equal/S11.8.4_A4.12_T2.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.4_A4.12_T2
 description: x and y are string primitives
 ---*/
diff --git a/test/language/expressions/greater-than/S11.8.2_A4.12_T1.js b/test/language/expressions/greater-than/S11.8.2_A4.12_T1.js
index e28cba47f5..5727ce8c12 100644
--- a/test/language/expressions/greater-than/S11.8.2_A4.12_T1.js
+++ b/test/language/expressions/greater-than/S11.8.2_A4.12_T1.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.2_A4.12_T1
 description: x and y are string primitives
 ---*/
@@ -44,3 +44,25 @@ if (("a\u0000b" > "a\u0000a") !== true) {
 if (("aa" > "aB") !== true) {
   throw new Test262Error('#7: ("aa" > aB") === true');
 }
+
+//CHECK#8
+if (("\u{10000}" > "\uD7FF") !== true) {
+  throw new Test262Error('#8: ("\\u{10000}" > "\\uD7FF") === true');
+}
+
+//CHECK#9
+if (("\uDC00" > "\uD800") !== true) {
+  throw new Test262Error('#9: ("\\uDC00" > "\\uD800") === true');
+}
+
+//CHECK#10
+// String comparison is done by code units, rather than by code points.
+// "\u{10000}" is equivalent to "\uD800\uDC00"
+if (("\u{10000}" > "\uFFFF") !== false) {
+  throw new Test262Error('#10: ("\\u{10000}" > "\\uFFFF") === false');
+}
+
+//CHECK#11
+if (("\u{12345}" > "\u{10000}") !== true) {
+  throw new Test262Error('#11: ("\\u{12345}" > "\\u{10000}") === true');
+}
diff --git a/test/language/expressions/greater-than/S11.8.2_A4.12_T2.js b/test/language/expressions/greater-than/S11.8.2_A4.12_T2.js
index 1b7dea952e..ee0585d145 100644
--- a/test/language/expressions/greater-than/S11.8.2_A4.12_T2.js
+++ b/test/language/expressions/greater-than/S11.8.2_A4.12_T2.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.2_A4.12_T2
 description: x and y are string primitives
 ---*/
diff --git a/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T1.js b/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T1.js
index 5f1b7dcc9e..411b963de3 100644
--- a/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T1.js
+++ b/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T1.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.3_A4.12_T1
 description: x and y are string primitives
 ---*/
@@ -44,3 +44,25 @@ if (("a\u0000a" <= "a\u0000b") !== true) {
 if (("aB" <= "aa") !== true) {
   throw new Test262Error('#7: ("aB" <= aa") === true');
 }
+
+//CHECK#8
+if (("\uD7FF" <= "\u{10000}") !== true) {
+  throw new Test262Error('#8: ("\\uD7FF" <= "\\u{10000}") === true');
+}
+
+//CHECK#9
+if (("\uD800" <= "\uDC00") !== true) {
+  throw new Test262Error('#9: ("\\uD800" <= "\\uDC00") === true');
+}
+
+//CHECK#10
+// String comparison is done by code units, rather than by code points.
+// "\u{10000}" is equivalent to "\uD800\uDC00"
+if (("\u{10000}" <= "\uFFFF") !== true) {
+  throw new Test262Error('#10: ("\\u{10000}" <= "\\uFFFF") === true');
+}
+
+//CHECK#11
+if (("\u{10000}" <= "\u{12345}") !== true) {
+  throw new Test262Error('#11: ("\\u{10000}" <= "\\u{12345}") === true');
+}
diff --git a/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T2.js b/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T2.js
index f40639eb23..0fb53b572d 100644
--- a/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T2.js
+++ b/test/language/expressions/less-than-or-equal/S11.8.3_A4.12_T2.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.3_A4.12_T2
 description: x and y are string primitives
 ---*/
diff --git a/test/language/expressions/less-than/S11.8.1_A4.12_T1.js b/test/language/expressions/less-than/S11.8.1_A4.12_T1.js
index 599e7a3d9a..b4ecf225b8 100644
--- a/test/language/expressions/less-than/S11.8.1_A4.12_T1.js
+++ b/test/language/expressions/less-than/S11.8.1_A4.12_T1.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.1_A4.12_T1
 description: x and y are string primitives
 ---*/
@@ -44,3 +44,25 @@ if (("a\u0000a" < "a\u0000b") !== true) {
 if (("aB" < "aa") !== true) {
   throw new Test262Error('#7: ("aB" < aa") === true');
 }
+
+//CHECK#8
+if (("\uD7FF" < "\u{10000}") !== true) {
+  throw new Test262Error('#8: ("\\uD7FF" < "\\u{10000}") === true');
+}
+
+//CHECK#9
+if (("\uD800" < "\uDC00") !== true) {
+  throw new Test262Error('#9: ("\\uD800" < "\\uDC00") === true');
+}
+
+//CHECK#10
+// String comparison is done by code units, rather than by code points.
+// "\u{10000}" is equivalent to "\uD800\uDC00"
+if (("\u{10000}" < "\uFFFF") !== true) {
+  throw new Test262Error('#10: ("\\u{10000}" < "\\uFFFF") === true');
+}
+
+//CHECK#11
+if (("\u{10000}" < "\u{12345}") !== true) {
+  throw new Test262Error('#11: ("\\u{10000}" < "\\u{12345}") === true');
+}
diff --git a/test/language/expressions/less-than/S11.8.1_A4.12_T2.js b/test/language/expressions/less-than/S11.8.1_A4.12_T2.js
index 6a9498c250..c68de04dd5 100644
--- a/test/language/expressions/less-than/S11.8.1_A4.12_T2.js
+++ b/test/language/expressions/less-than/S11.8.1_A4.12_T2.js
@@ -5,7 +5,7 @@
 info: |
     If neither x, nor y is a prefix of each other, returned result of strings
     comparison applies a simple lexicographic ordering to the sequences of
-    code point value values
+    code unit value values
 es5id: 11.8.1_A4.12_T2
 description: x and y are string primitives
 ---*/