[Bun.js] Fix TypedArray/ArrayBuffer <> Zig interop

1 files changed, 38 insertions, 0 deletions

diff --git a/integration/bunjs-only-snippets/fs.test.js b/integration/bunjs-only-snippets/fs.test.js
index 513132450..b831fb00b 100644
--- a/integration/bunjs-only-snippets/fs.test.js
+++ b/integration/bunjs-only-snippets/fs.test.js
@@ -17,6 +17,17 @@ describe("readFileSync", () => {
     const text = readFileSync(import.meta.dir + "/readFileSync.txt", "utf8");
     expect(text).toBe("File read successfully");
   });
+
+  it("returning Uint8Array works", () => {
+    const text = readFileSync(import.meta.dir + "/readFileSync.txt");
+    const encoded = [
+      70, 105, 108, 101, 32, 114, 101, 97, 100, 32, 115, 117, 99, 99, 101, 115,
+      115, 102, 117, 108, 108, 121,
+    ];
+    for (let i = 0; i < encoded.length; i++) {
+      expect(text[i]).toBe(encoded[i]);
+    }
+  });
 });
 
 describe("writeFileSync", () => {
@@ -26,4 +37,31 @@ describe("writeFileSync", () => {
 
     expect(readFileSync(path, "utf8")).toBe("File written successfully");
   });
+
+  it("returning Uint8Array works", () => {
+    const buffer = new Uint8Array([
+      70, 105, 108, 101, 32, 119, 114, 105, 116, 116, 101, 110, 32, 115, 117,
+      99, 99, 101, 115, 115, 102, 117, 108, 108, 121,
+    ]);
+    const path = `/tmp/${Date.now()}.blob.writeFileSync.txt`;
+    writeFileSync(path, buffer);
+    const out = readFileSync(path);
+
+    for (let i = 0; i < buffer.length; i++) {
+      expect(buffer[i]).toBe(out[i]);
+    }
+  });
+  it("returning ArrayBuffer works", () => {
+    const buffer = new Uint8Array([
+      70, 105, 108, 101, 32, 119, 114, 105, 116, 116, 101, 110, 32, 115, 117,
+      99, 99, 101, 115, 115, 102, 117, 108, 108, 121,
+    ]);
+    const path = `/tmp/${Date.now()}.blob2.writeFileSync.txt`;
+    writeFileSync(path, buffer.buffer);
+    const out = readFileSync(path);
+
+    for (let i = 0; i < buffer.length; i++) {
+      expect(buffer[i]).toBe(out[i]);
+    }
+  });
 });