From 76de56091bcda1eae8cfb398981c8470d06268e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Sun, 10 Oct 2021 15:18:02 +0200
Subject: [PATCH] test(ext/ffi): add test for multiple buffers (#12373)

---
 test_ffi/src/lib.rs                 | 13 +++++++++++++
 test_ffi/tests/integration_tests.rs |  1 +
 test_ffi/tests/test.js              | 10 ++++++++--
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/test_ffi/src/lib.rs b/test_ffi/src/lib.rs
index cc6063ca34..d7fd5182da 100644
--- a/test_ffi/src/lib.rs
+++ b/test_ffi/src/lib.rs
@@ -15,6 +15,19 @@ pub extern "C" fn print_buffer(ptr: *const u8, len: usize) {
   println!("{:?}", buf);
 }
 
+#[allow(clippy::not_unsafe_ptr_arg_deref)]
+#[no_mangle]
+pub extern "C" fn print_buffer2(
+  ptr1: *const u8,
+  len1: usize,
+  ptr2: *const u8,
+  len2: usize,
+) {
+  let buf1 = unsafe { std::slice::from_raw_parts(ptr1, len1) };
+  let buf2 = unsafe { std::slice::from_raw_parts(ptr2, len2) };
+  println!("{:?} {:?}", buf1, buf2);
+}
+
 #[no_mangle]
 pub extern "C" fn add_u32(a: u32, b: u32) -> u32 {
   a + b
diff --git a/test_ffi/tests/integration_tests.rs b/test_ffi/tests/integration_tests.rs
index 28176f1876..e16e97e24e 100644
--- a/test_ffi/tests/integration_tests.rs
+++ b/test_ffi/tests/integration_tests.rs
@@ -40,6 +40,7 @@ fn basic() {
     dlopen doesn't panic\n\
     something\n\
     [1, 2, 3, 4, 5, 6, 7, 8]\n\
+    [1, 2, 3, 4, 5, 6, 7, 8] [9, 10]\n\
     579\n\
     579\n\
     579\n\
diff --git a/test_ffi/tests/test.js b/test_ffi/tests/test.js
index 098541265c..fbd023a91b 100644
--- a/test_ffi/tests/test.js
+++ b/test_ffi/tests/test.js
@@ -21,6 +21,10 @@ try {
 const dylib = Deno.dlopen(libPath, {
   "print_something": { parameters: [], result: "void" },
   "print_buffer": { parameters: ["buffer", "usize"], result: "void" },
+  "print_buffer2": {
+    parameters: ["buffer", "usize", "buffer", "usize"],
+    result: "void",
+  },
   "add_u32": { parameters: ["u32", "u32"], result: "u32" },
   "add_i32": { parameters: ["i32", "i32"], result: "i32" },
   "add_u64": { parameters: ["u64", "u64"], result: "u64" },
@@ -39,7 +43,9 @@ const dylib = Deno.dlopen(libPath, {
 
 dylib.symbols.print_something();
 const buffer = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
+const buffer2 = new Uint8Array([9, 10]);
 dylib.symbols.print_buffer(buffer, buffer.length);
+dylib.symbols.print_buffer2(buffer, buffer.length, buffer2, buffer2.length);
 console.log(dylib.symbols.add_u32(123, 456));
 console.log(dylib.symbols.add_i32(123, 456));
 console.log(dylib.symbols.add_u64(123, 456));
@@ -68,8 +74,8 @@ function deferred() {
 }
 
 const promise = deferred();
-const buffer2 = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
-dylib.symbols.nonblocking_buffer(buffer2, buffer2.length).then(() => {
+const buffer3 = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
+dylib.symbols.nonblocking_buffer(buffer3, buffer3.length).then(() => {
   promise.resolve();
 });
 await promise;