1 files changed, 53 insertions, 0 deletions
diff --git a/test/bun.js/spawn-streaming-stdin.test.ts b/test/bun.js/spawn-streaming-stdin.test.ts
new file mode 100644
index 000000000..953548071
--- /dev/null
+++ b/test/bun.js/spawn-streaming-stdin.test.ts
@@ -0,0 +1,53 @@
+import { it, test, expect } from "bun:test";
+import { spawn } from "bun";
+import { bunExe } from "./bunExe";
+import { gcTick } from "gc";
+
+const N = 100;
+test("spawn can write to stdin multiple chunks", async () => {
+  for (let i = 0; i < N; i++) {
+    var exited;
+    await (async function () {
+      const proc = spawn({
+        cmd: [bunExe(), import.meta.dir + "/stdin-repro.js"],
+        stdout: "pipe",
+        stdin: "pipe",
+        stderr: "inherit",
+        env: {
+          BUN_DEBUG_QUIET_LOGS: 1,
+        },
+      });
+      exited = proc.exited;
+      var counter = 0;
+      var inCounter = 0;
+      const prom2 = (async function () {
+        while (inCounter++ < 4) {
+          await new Promise((resolve, reject) => setTimeout(resolve, 8));
+          proc.stdin.write("Wrote to stdin!");
+          await proc.stdin.flush();
+        }
+        await proc.stdin.end();
+      })();
+
+      const prom = (async function () {
+        try {
+          for await (var chunk of proc.stdout) {
+            expect(new TextDecoder().decode(chunk)).toBe("Wrote to stdin!\n");
+            counter++;
+
+            if (counter > 3) break;
+          }
+        } catch (e) {
+          console.log(e.stack);
+          throw e;
+        }
+      })();
+      await Promise.all([prom, prom2]);
+      expect(counter).toBe(4);
+      //   proc.kill();
+    })();
+    await exited;
+  }
+
+  gcTick(true);
+});