From 788a6abfd391b8899d28552a9f192d9aaee91347 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kh=E1=BA=A3i?= <hvksmr1996@gmail.com>
Date: Sun, 5 Apr 2020 00:13:37 +0700
Subject: fix(std/testing): formatting bigint (#4626)

---
 std/testing/format.ts      | 7 +++++++
 std/testing/format_test.ts | 8 ++++++++
 2 files changed, 15 insertions(+)

(limited to 'std/testing')

diff --git a/std/testing/format.ts b/std/testing/format.ts
index ee291dc23..4004ebc9d 100644
--- a/std/testing/format.ts
+++ b/std/testing/format.ts
@@ -115,6 +115,10 @@ function printSymbol(val: symbol): string {
   return symbolToString.call(val).replace(SYMBOL_REGEXP, "Symbol($1)");
 }
 
+function printBigInt(val: bigint): string {
+  return val.toString() + "n";
+}
+
 function printError(val: Error): string {
   return "[" + errorToString.call(val) + "]";
 }
@@ -155,6 +159,9 @@ function printBasicValue(
   if (typeOf === "symbol") {
     return printSymbol(val);
   }
+  if (typeOf === "bigint") {
+    return printBigInt(val);
+  }
 
   const toStringed = toString.call(val);
 
diff --git a/std/testing/format_test.ts b/std/testing/format_test.ts
index eac5b7d84..f4065ff92 100644
--- a/std/testing/format_test.ts
+++ b/std/testing/format_test.ts
@@ -580,6 +580,14 @@ test({
   },
 });
 
+test({
+  name: "prints a bigint",
+  fn(): void {
+    const val = 12345n;
+    assertEquals(format(val), "12345n");
+  },
+});
+
 test({
   name: "prints undefined",
   fn(): void {
-- 
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