dev.sh: support running only integration tests or haskell/unit tests individually

scripts/dev.sh

@@ -34,10 +34,12 @@ Available COMMANDs:
     Launch a postgres container suitable for use with graphql-engine, watch its logs,
     clean up nicely after
 
-  test [pytest_args...]
-    Run the integration tests, handling spinning up all dependencies. This will force
-    a recompile. A code coverage report will be generated. All arguments after 'test'
-    will be passed to the 'pytest' invocation.
+  test [--integration [pytest_args...] | --unit]
+    Run the unit and integration tests, handling spinning up all dependencies.
+    This will force a recompile. A code coverage report will be generated. 
+        Either integration or unit tests can be run individually with their
+    respective flags. With '--integration' any arguments that follow will be
+    passed to the pytest invocation
 
 EOL
 exit 1
@@ -64,7 +66,24 @@ case "${1-}" in
   postgres)
   ;;
   test)
-    PYTEST_ARGS="${@:2}"
+    case "${2-}" in
+      --unit)
+      RUN_INTEGRATION_TESTS=false
+      RUN_UNIT_TESTS=true
+      ;;
+      --integration)
+      PYTEST_ARGS="${@:3}"
+      RUN_INTEGRATION_TESTS=true
+      RUN_UNIT_TESTS=false
+      ;;
+      "")
+      RUN_INTEGRATION_TESTS=true
+      RUN_UNIT_TESTS=true
+      ;;
+      *)
+      die_usage
+      ;;
+    esac
   ;;
   *)
     die_usage
@@ -312,9 +331,13 @@ elif [ "$MODE" = "test" ]; then
   launch_postgres_container
   wait_docker_postgres
 
+  # These also depend on a running DB:
+  if [ "$RUN_UNIT_TESTS" = true ]; then
     echo_pretty "Running Haskell test suite"
     HASURA_GRAPHQL_DATABASE_URL="$DB_URL" $TEST_INVOCATION --coverage
+  fi
 
+  if [ "$RUN_INTEGRATION_TESTS" = true ]; then
     echo_pretty "Starting graphql-engine"
     GRAPHQL_ENGINE_TEST_LOG=/tmp/hasura-dev-test-engine.log
     export HASURA_GRAPHQL_SERVER_PORT=8088
@@ -380,6 +403,7 @@ elif [ "$MODE" = "test" ]; then
     echo
     stack hpc report graphql-engine.tix
     rm graphql-engine.tix
+  fi
 
 else
   echo "impossible; fix script."