more tests for TextDecoder

Author: gfx

src/utils/utf8.ts

@@ -134,7 +134,7 @@ export function utf8DecodeJs(bytes: Uint8Array, inputOffset: number, byteLength:
 
 const sharedTextDecoder = typeof TextDecoder !== "undefined" ? new TextDecoder() : null;
 export const TEXT_DECODER_AVAILABLE = process.env.TEXT_DECODER !== "never" && !!sharedTextDecoder;
-export const TEXT_DECODER_THRESHOLD = 200;
+export const TEXT_DECODER_THRESHOLD = process.env.TEXT_DECODER !== "force" ? 200 : 0;
 
 export function utf8DecodeTD(bytes: Uint8Array, inputOffset: number, byteLength: number): string {
   const stringBytes = bytes.subarray(inputOffset, inputOffset + byteLength);

test/msgpack-test-suite.test.ts

@@ -89,7 +89,9 @@ describe("msgpack-test-suite", () => {
       FLOAT64_NEGATIVE_INF: Number.NEGATIVE_INFINITY,
       FLOAT64_NAN: Number.NaN,
       STR16: "a".repeat(0x100),
+      STR16_MBS: "🌏".repeat(0x100),
       STR32: "b".repeat(0x10_000),
+      STR32_MBS: "🍣".repeat(0x10_000),
       STR32LARGE: "c".repeat(0x100_000), // may cause "RangeError: Maximum call stack size exceeded" in simple implelementions
       STR_INCLUDING_NUL: "foo\0bar",
       STR_BROKEN_FF: "\xff",