Added some tests for wasm32-unknown-wasi

Author: nipzu

.travis.yml

@@ -60,10 +60,11 @@ matrix:
         - cargo test
 
     - rust: nightly
-      env: DESCRIPTION="WASM via emscripten, stdweb and wasm-bindgen"
+      env: DESCRIPTION="WASM via emscripten, stdweb, wasm-bindgen and WASI"
       install:
         - rustup target add wasm32-unknown-unknown
         - rustup target add wasm32-unknown-emscripten
+        - rustup target add wasm32-unknown-wasi
         - nvm install 9
         - ./utils/ci/install_cargo_web.sh
         - cargo web prepare-emscripten
@@ -80,6 +81,7 @@ matrix:
         #- cargo web test --target wasm32-unknown-emscripten
         #- cargo web test --nodejs --target wasm32-unknown-emscripten
         #- cargo build --target wasm32-unknown-unknown # without any features
+        - cargo build --target wasm32-unknown-wasi
         - cargo build --target wasm32-unknown-unknown --features=wasm-bindgen
         - cargo web test --target wasm32-unknown-unknown --features=stdweb
         - cargo build --manifest-path tests/wasm_bindgen/Cargo.toml --target wasm32-unknown-unknown