Merge pull request #29 from GopherJ/improve/add-mysql-service-in-ci

add mysql sevice in CI

.travis.yml

@@ -7,6 +7,7 @@ addons:
             - libssl-dev
 services:
     - postgresql
+    - mysql
 cache: cargo
 rust:
   - stable
@@ -19,11 +20,15 @@ before_script:
 - rustup component add clippy
 - psql -c "CREATE DATABASE casbin;" -U postgres
 - psql -c "CREATE USER casbin_rs WITH PASSWORD 'casbin_rs';" -U postgres
+- mysql -u root -e "CREATE DATABASE casbin;"
+- mysql -u root -e "CREATE USER 'casbin_rs'@'localhost' IDENTIFIED BY 'casbin_rs'; GRANT ALL ON casbin.* TO 'casbin_rs'@'localhost';"
 
 script:
 - cargo clean
-- cargo build
-- cargo test
+- cargo build --no-default-features --features postgres,runtime-async-std
+- cargo test --no-default-features --features postgres,runtime-async-std
+- cargo build --no-default-features --features mysql,runtime-async-std
+- cargo test --no-default-features --features mysql,runtime-async-std
 - cargo clippy -- -D warnings
 - cargo fmt --all -- --check