Add rustapi_module tests to CI

.travis.yml

@@ -38,7 +38,7 @@ before_install:
   - source ./ci/travis/setup.sh
 
 install:
-  - pip install setuptools-rust pytest pytest-benchmark
+  - pip install setuptools-rust pytest pytest-benchmark tox
 
 script:
   - ./ci/travis/test.sh

ci/travis/test.sh

@@ -11,3 +11,7 @@ for example in examples/*; do
   pytest -v tests
   cd $TRAVIS_BUILD_DIR
 done
+
+cd tests/rustapi_module
+tox -e py
+cd $TRAVIS_BUILD_DIR