Add separate gRPC-Web test build job (#1137)

Author: JamesNK

.github/workflows/test.yml

@@ -26,3 +26,14 @@ jobs:
 
     - name: Build and run tests
       run: ./build_and_test.sh
+
+  grpc_web:
+    name: gRPC-Web Tests
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Check out code
+      uses: actions/checkout@v2
+
+    - name: Run interop tests
+      run: ./grpcweb_interoptests.sh

build_and_test.sh

@@ -40,6 +40,4 @@ do
     dotnet test $test_project -c Release -v n --no-build < /dev/null
 done
 
-echo "Tests finished"
-
-source grpcweb_interoptests.sh
+echo "Tests finished"