3 files changed, 72 insertions, 0 deletions
diff --git a/rand/tests/wasm_bindgen/Cargo.toml b/rand/tests/wasm_bindgen/Cargo.toml
new file mode 100644
index 0000000..e83c174
--- /dev/null
+++ b/rand/tests/wasm_bindgen/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "rand_wasm_bindgen_test"
+description = "Minimal crate to test that rand can be build for web assembly target"
+version = "0.1.0"
+authors = ["The Rand Project Developers"]
+publish = false
+license = "MIT OR Apache-2.0"
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+rand = { path = "../..", features = ["wasm-bindgen"] }
+wasm-bindgen = "0.2"
+wasm-bindgen-test = "0.2"
diff --git a/rand/tests/wasm_bindgen/js/index.js b/rand/tests/wasm_bindgen/js/index.js
new file mode 100644
index 0000000..a02fb59
--- /dev/null
+++ b/rand/tests/wasm_bindgen/js/index.js
@@ -0,0 +1,7 @@
+'use strict';
+
+const rand_wasm_bindgen_test = require('./rand_wasm_bindgen_test');
+
+console.log(rand_wasm_bindgen_test.generate_from_entropy());
+console.log(rand_wasm_bindgen_test.generate_from_os_rand());
+console.log(rand_wasm_bindgen_test.generate_from_seed());
diff --git a/rand/tests/wasm_bindgen/src/lib.rs b/rand/tests/wasm_bindgen/src/lib.rs
new file mode 100644
index 0000000..9af0b9e
--- /dev/null
+++ b/rand/tests/wasm_bindgen/src/lib.rs
@@ -0,0 +1,49 @@
+// Copyright 2018 Developers of the Rand project.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Crate to test WASM with the `wasm-bindgen` lib.
+
+#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png")]
+
+use rand::rngs::{OsRng, StdRng};
+use rand::{Rng, SeedableRng};
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn generate_from_seed(seed: u32) -> i32 {
+    StdRng::seed_from_u64(seed as u64).gen()
+}
+
+#[wasm_bindgen]
+pub fn generate_from_os_rand() -> i32 {
+    OsRng.gen()
+}
+
+#[wasm_bindgen]
+pub fn generate_from_entropy() -> i32 {
+    StdRng::from_entropy().gen()
+}
+
+pub mod tests {
+    use wasm_bindgen_test::*;
+
+    #[wasm_bindgen_test]
+    fn generate_from_seed() {
+        let _ = super::generate_from_seed(42);
+    }
+
+    #[wasm_bindgen_test]
+    fn generate_from_os_rand() {
+        let _ = super::generate_from_os_rand();
+    }
+
+    #[wasm_bindgen_test]
+    fn generate_from_entropy() {
+        let _ = super::generate_from_entropy();
+    }
+}