4 files changed, 60 insertions, 4 deletions
diff --git a/cli/tests/unit/ffi_test.ts b/cli/tests/unit/ffi_test.ts
index ab25df699..07ec4003f 100644
--- a/cli/tests/unit/ffi_test.ts
+++ b/cli/tests/unit/ffi_test.ts
@@ -2,7 +2,7 @@
 
 import { assertThrows, unitTest } from "./test_util.ts";
 
-unitTest(function dlopenInvalidArguments() {
+unitTest({ perms: { ffi: true } }, function dlopenInvalidArguments() {
   const filename = "/usr/lib/libc.so.6";
   assertThrows(() => {
     // @ts-expect-error: ForeignFunction cannot be null
diff --git a/test_ffi/src/lib.rs b/test_ffi/src/lib.rs
index d9e950d4f..a5a077950 100644
--- a/test_ffi/src/lib.rs
+++ b/test_ffi/src/lib.rs
@@ -4,6 +4,41 @@ pub extern "C" fn print_something() {
 }
 
 #[no_mangle]
-pub extern "C" fn add(a: u32, b: u32) -> u32 {
+pub extern "C" fn add_u32(a: u32, b: u32) -> u32 {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_i32(a: i32, b: i32) -> i32 {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_u64(a: u64, b: u64) -> u64 {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_i64(a: i64, b: i64) -> i64 {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_usize(a: usize, b: usize) -> usize {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_isize(a: isize, b: isize) -> isize {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_f32(a: f32, b: f32) -> f32 {
+  a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_f64(a: f64, b: f64) -> f64 {
   a + b
 }
diff --git a/test_ffi/tests/integration_tests.rs b/test_ffi/tests/integration_tests.rs
index 7aa8a0611..62b28d879 100644
--- a/test_ffi/tests/integration_tests.rs
+++ b/test_ffi/tests/integration_tests.rs
@@ -39,6 +39,13 @@ fn basic() {
   let expected = "\
     something\n\
     579\n\
+    579\n\
+    579\n\
+    579\n\
+    579\n\
+    579\n\
+    579.9119873046875\n\
+    579.912\n\
     Correct number of resources\n";
   assert_eq!(stdout, expected);
   assert_eq!(stderr, "");
diff --git a/test_ffi/tests/test.js b/test_ffi/tests/test.js
index a7b0aba6d..24b64722c 100644
--- a/test_ffi/tests/test.js
+++ b/test_ffi/tests/test.js
@@ -12,11 +12,25 @@ const libPath = `${targetDir}/${libPrefix}test_ffi.${libSuffix}`;
 const resourcesPre = Deno.resources();
 const dylib = Deno.dlopen(libPath, {
   "print_something": { parameters: [], result: "void" },
-  "add": { parameters: ["u32", "u32"], result: "u32" },
+  "add_u32": { parameters: ["u32", "u32"], result: "u32" },
+  "add_i32": { parameters: ["i32", "i32"], result: "i32" },
+  "add_u64": { parameters: ["u64", "u64"], result: "u64" },
+  "add_i64": { parameters: ["i64", "i64"], result: "i64" },
+  "add_usize": { parameters: ["usize", "usize"], result: "usize" },
+  "add_isize": { parameters: ["isize", "isize"], result: "isize" },
+  "add_f32": { parameters: ["f32", "f32"], result: "f32" },
+  "add_f64": { parameters: ["f64", "f64"], result: "f64" },
 });
 
 dylib.symbols.print_something();
-console.log(dylib.symbols.add(123, 456));
+console.log(dylib.symbols.add_u32(123, 456));
+console.log(dylib.symbols.add_i32(123, 456));
+console.log(dylib.symbols.add_u64(123, 456));
+console.log(dylib.symbols.add_i64(123, 456));
+console.log(dylib.symbols.add_usize(123, 456));
+console.log(dylib.symbols.add_isize(123, 456));
+console.log(dylib.symbols.add_f32(123.123, 456.789));
+console.log(dylib.symbols.add_f64(123.123, 456.789));
 
 dylib.close();
 const resourcesPost = Deno.resources();