Add minimal wasm-bindgen test crate

.travis.yml

@@ -144,6 +144,7 @@ matrix:
         - cargo web -V
         - cargo list | grep install-update || cargo install -f cargo-update
         - cargo install-update -i cargo-update wasm-bindgen-cli
+        - cargo install-update -i cargo-update wasm-pack
       addons:
         chrome: stable
       script:
@@ -159,6 +160,7 @@ matrix:
         - cargo build --manifest-path tests/wasm_bindgen/Cargo.toml --target wasm32-unknown-unknown
         - wasm-bindgen --nodejs target/wasm32-unknown-unknown/debug/rand_wasm_bindgen_test.wasm --out-dir tests/wasm_bindgen/js
         - node tests/wasm_bindgen/js/index.js
+        - wasm-pack test --node tests/wasm_bindgen
 
     - rust: nightly
       env: DESCRIPTION="cross-platform builder (doesn't run tests)"

tests/wasm_bindgen/Cargo.toml

@@ -12,3 +12,4 @@ crate-type = ["cdylib"]
 [dependencies]
 rand = { path = "../..", features = ["wasm-bindgen"] }
 wasm-bindgen = "0.2"
+wasm-bindgen-test = "0.2"

tests/wasm_bindgen/src/lib.rs

@@ -1,5 +1,6 @@
 extern crate rand;
 extern crate wasm_bindgen;
+extern crate wasm_bindgen_test;
 
 use rand::rngs::{OsRng, StdRng};
 use rand::FromEntropy;
@@ -20,3 +21,22 @@ pub fn generate_from_os_rand() -> i32 {
 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();
+    }
+}