2 files changed, 119 insertions, 0 deletions
diff --git a/serde_v8/tests/de.rs b/serde_v8/tests/de.rs
index 5f3e262e7..a77089bab 100644
--- a/serde_v8/tests/de.rs
+++ b/serde_v8/tests/de.rs
@@ -4,6 +4,7 @@ use serde::Deserializer;
 
 use serde_v8::utils::js_exec;
 use serde_v8::utils::v8_do;
+use serde_v8::BigInt;
 use serde_v8::ByteString;
 use serde_v8::Error;
 use serde_v8::U16String;
@@ -566,3 +567,65 @@ detest!(
   "BigInt(-1.7976931348623157e+308)",
   f32::NEG_INFINITY
 );
+
+// BigInt to BigInt
+detest!(
+  de_bigint_var_u8,
+  BigInt,
+  "255n",
+  num_bigint::BigInt::from(255u8).into()
+);
+detest!(
+  de_bigint_var_i8,
+  BigInt,
+  "-128n",
+  num_bigint::BigInt::from(-128i8).into()
+);
+detest!(
+  de_bigint_var_u16,
+  BigInt,
+  "65535n",
+  num_bigint::BigInt::from(65535u16).into()
+);
+detest!(
+  de_bigint_var_i16,
+  BigInt,
+  "-32768n",
+  num_bigint::BigInt::from(-32768i16).into()
+);
+detest!(
+  de_bigint_var_u32,
+  BigInt,
+  "4294967295n",
+  num_bigint::BigInt::from(4294967295u32).into()
+);
+detest!(
+  de_bigint_var_i32,
+  BigInt,
+  "-2147483648n",
+  num_bigint::BigInt::from(-2147483648i32).into()
+);
+detest!(
+  de_bigint_var_u64,
+  BigInt,
+  "18446744073709551615n",
+  num_bigint::BigInt::from(18446744073709551615u64).into()
+);
+detest!(
+  de_bigint_var_i64,
+  BigInt,
+  "-9223372036854775808n",
+  num_bigint::BigInt::from(-9223372036854775808i64).into()
+);
+detest!(
+  de_bigint_var_u128,
+  BigInt,
+  "340282366920938463463374607431768211455n",
+  num_bigint::BigInt::from(340282366920938463463374607431768211455u128).into()
+);
+detest!(
+  de_bigint_var_i128,
+  BigInt,
+  "-170141183460469231731687303715884105728n",
+  num_bigint::BigInt::from(-170141183460469231731687303715884105728i128).into()
+);
diff --git a/serde_v8/tests/ser.rs b/serde_v8/tests/ser.rs
index d6de3a62a..b61a758f9 100644
--- a/serde_v8/tests/ser.rs
+++ b/serde_v8/tests/ser.rs
@@ -3,6 +3,7 @@ use serde::Serialize;
 use serde_json::json;
 use serde_v8::utils::js_exec;
 use serde_v8::utils::v8_do;
+use serde_v8::BigInt;
 
 #[derive(Debug, Serialize, PartialEq)]
 struct MathOp {
@@ -138,6 +139,61 @@ sertest!(
 );
 
 sertest!(
+  ser_bigint_u8,
+  BigInt::from(num_bigint::BigInt::from(255_u8)),
+  "x === 255n"
+);
+sertest!(
+  ser_bigint_i8,
+  BigInt::from(num_bigint::BigInt::from(-128_i8)),
+  "x === -128n"
+);
+sertest!(
+  ser_bigint_u16,
+  BigInt::from(num_bigint::BigInt::from(65535_u16)),
+  "x === 65535n"
+);
+sertest!(
+  ser_bigint_i16,
+  BigInt::from(num_bigint::BigInt::from(-32768_i16)),
+  "x === -32768n"
+);
+sertest!(
+  ser_bigint_u32,
+  BigInt::from(num_bigint::BigInt::from(4294967295_u32)),
+  "x === 4294967295n"
+);
+sertest!(
+  ser_bigint_i32,
+  BigInt::from(num_bigint::BigInt::from(-2147483648_i32)),
+  "x === -2147483648n"
+);
+sertest!(
+  ser_bigint_u64,
+  BigInt::from(num_bigint::BigInt::from(9007199254740991_u64)),
+  "x === 9007199254740991n"
+);
+sertest!(
+  ser_bigint_i64,
+  BigInt::from(num_bigint::BigInt::from(-9007199254740991_i64)),
+  "x === -9007199254740991n"
+);
+sertest!(
+  ser_bigint_u128,
+  BigInt::from(num_bigint::BigInt::from(
+    340282366920938463463374607431768211455_u128
+  )),
+  "x === 340282366920938463463374607431768211455n"
+);
+sertest!(
+  ser_bigint_i128,
+  BigInt::from(num_bigint::BigInt::from(
+    -170141183460469231731687303715884105728_i128
+  )),
+  "x === -170141183460469231731687303715884105728n"
+);
+
+sertest!(
   ser_map,
   {
     let map: std::collections::BTreeMap<&str, u32> =