Make tests fail the build. Conduct exit status of tests correctly

.github/workflows/validate-python.yml

@@ -14,7 +14,7 @@ jobs:
       - name: 'Validate tests'
         working-directory: ./cbioportal-core
         run: |
-          docker run -v ${PWD}:/cbioportal-core python:3.6 /bin/bash -c '
+          docker run -v ${PWD}:/cbioportal-core python:3.6 /bin/sh -c '
             cd cbioportal-core &&
             pip install -r requirements.txt &&
-            source test_scripts.sh'
+            ./test_scripts.sh'

README.md

@@ -78,7 +78,7 @@ After you are done with the setup, you can build and test the project.
 
 1. Execute tests through the provided script:
 ```bash
-source test_scripts.sh
+./test_scripts.sh
 ```
 
 2. Build the loader jar using Maven (includes testing):

test_scripts.sh

@@ -1 +1,3 @@
-pushd tests/; PYTHONPATH=../scripts:$PYTHONPATH python -m unittest *.py; popd
+#!/bin/bash
+
+pushd tests/ && PYTHONPATH=../scripts:$PYTHONPATH python -m unittest *.py; exit_stat=$?; popd; exit $exit_stat