diff --git a/test/language/literals/bigint/legacy-octal-like-invalid-00n.js b/test/language/literals/bigint/legacy-octal-like-invalid-00n.js
new file mode 100644
index 0000000000..5c4c9bbd3d
--- /dev/null
+++ b/test/language/literals/bigint/legacy-octal-like-invalid-00n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in LegacyOctalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+    NumericLiteralBase BigIntLiteralSuffix
+    LegacyOctalIntegerLiteral
+
+  NumericLiteralBase ::
+    BinaryIntegerLiteral
+    OctalIntegerLiteral
+    HexIntegerLiteral
+
+  BigIntLiteralSuffix :: n
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+00n;
diff --git a/test/language/literals/bigint/legacy-octal-like-invalid-01n.js b/test/language/literals/bigint/legacy-octal-like-invalid-01n.js
new file mode 100644
index 0000000000..1f406259e5
--- /dev/null
+++ b/test/language/literals/bigint/legacy-octal-like-invalid-01n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in LegacyOctalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+    NumericLiteralBase BigIntLiteralSuffix
+    LegacyOctalIntegerLiteral
+
+  NumericLiteralBase ::
+    BinaryIntegerLiteral
+    OctalIntegerLiteral
+    HexIntegerLiteral
+
+  BigIntLiteralSuffix :: n
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+01n;
diff --git a/test/language/literals/bigint/legacy-octal-like-invalid-07n.js b/test/language/literals/bigint/legacy-octal-like-invalid-07n.js
new file mode 100644
index 0000000000..b9b962cc2c
--- /dev/null
+++ b/test/language/literals/bigint/legacy-octal-like-invalid-07n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in LegacyOctalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+    NumericLiteralBase BigIntLiteralSuffix
+    LegacyOctalIntegerLiteral
+
+  NumericLiteralBase ::
+    BinaryIntegerLiteral
+    OctalIntegerLiteral
+    HexIntegerLiteral
+
+  BigIntLiteralSuffix :: n
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+07n;
diff --git a/test/language/literals/bigint/non-octal-like-invalid-0008n.js b/test/language/literals/bigint/non-octal-like-invalid-0008n.js
new file mode 100644
index 0000000000..239a45dfc5
--- /dev/null
+++ b/test/language/literals/bigint/non-octal-like-invalid-0008n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in NonOctalDecimalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+
+  https://github.com/tc39/proposal-bigint/issues/208
+
+  NumericLiteral ::
+    DecimalBigIntegerLiteral
+
+  DecimalBigIntegerLiteral ::
+    0 BigIntLiteralSuffix
+    NonZeroDigit DecimalDigits_opt BigIntLiteralSuffix
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+0008n;
diff --git a/test/language/literals/bigint/non-octal-like-invalid-012348n.js b/test/language/literals/bigint/non-octal-like-invalid-012348n.js
new file mode 100644
index 0000000000..fbbc05312f
--- /dev/null
+++ b/test/language/literals/bigint/non-octal-like-invalid-012348n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in NonOctalDecimalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+
+  https://github.com/tc39/proposal-bigint/issues/208
+
+  NumericLiteral ::
+    DecimalBigIntegerLiteral
+
+  DecimalBigIntegerLiteral ::
+    0 BigIntLiteralSuffix
+    NonZeroDigit DecimalDigits_opt BigIntLiteralSuffix
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+012348n;
diff --git a/test/language/literals/bigint/non-octal-like-invalid-08n.js b/test/language/literals/bigint/non-octal-like-invalid-08n.js
new file mode 100644
index 0000000000..9c7b06921e
--- /dev/null
+++ b/test/language/literals/bigint/non-octal-like-invalid-08n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in NonOctalDecimalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+
+  https://github.com/tc39/proposal-bigint/issues/208
+
+  NumericLiteral ::
+    DecimalBigIntegerLiteral
+
+  DecimalBigIntegerLiteral ::
+    0 BigIntLiteralSuffix
+    NonZeroDigit DecimalDigits_opt BigIntLiteralSuffix
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+08n;
diff --git a/test/language/literals/bigint/non-octal-like-invalid-09n.js b/test/language/literals/bigint/non-octal-like-invalid-09n.js
new file mode 100644
index 0000000000..f8ef4935f4
--- /dev/null
+++ b/test/language/literals/bigint/non-octal-like-invalid-09n.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-NumericLiteral
+description: >
+  The BigInt suffix is disallowed in NonOctalDecimalIntegerLiteral
+info: |
+  NumericLiteral ::
+    DecimalIntegerLiteral BigIntLiteralSuffix
+
+  https://github.com/tc39/proposal-bigint/issues/208
+
+  NumericLiteral ::
+    DecimalBigIntegerLiteral
+
+  DecimalBigIntegerLiteral ::
+    0 BigIntLiteralSuffix
+    NonZeroDigit DecimalDigits_opt BigIntLiteralSuffix
+features: [BigInt]
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+09n;