BREAKING: remove custom implementation of Deno.Buffer.toString() (#4992)

Keep in mind Buffer.toString() still exists, but returns [object Object]. 

Reason for removal of Buffer.toString() was that it implicitly used 
TextDecoder with fixed "utf-8" encoding and no way to customize 
the encoding.

1 files changed, 2 insertions, 2 deletions

diff --git a/std/io/ioutil_test.ts b/std/io/ioutil_test.ts
index 1f552d0e6..cf8eaf437 100644
--- a/std/io/ioutil_test.ts
+++ b/std/io/ioutil_test.ts
@@ -76,7 +76,7 @@ Deno.test("testCopyN1", async function (): Promise<void> {
   const r = stringsReader("abcdefghij");
   const n = await copyN(r, w, 3);
   assertEquals(n, 3);
-  assertEquals(w.toString(), "abc");
+  assertEquals(new TextDecoder().decode(w.bytes()), "abc");
 });
 
 Deno.test("testCopyN2", async function (): Promise<void> {
@@ -84,7 +84,7 @@ Deno.test("testCopyN2", async function (): Promise<void> {
   const r = stringsReader("abcdefghij");
   const n = await copyN(r, w, 11);
   assertEquals(n, 10);
-  assertEquals(w.toString(), "abcdefghij");
+  assertEquals(new TextDecoder().decode(w.bytes()), "abcdefghij");
 });
 
 Deno.test("copyNWriteAllData", async function (): Promise<void> {