fix arg splitting, capture exit code

.github/scripts/integration_test_runner.sh

@@ -6,8 +6,13 @@ npm install hardhat
 popd || exit
 
 # used to pass --cov=$path and --cov-append to pytest
-pytest "$1" tests/e2e/ -n auto
 if [ "$1" != "" ]; then
+    pytest "$1" tests/e2e/ -n auto
+    status_code=$?
     python -m coverage report
+else
+    pytest tests/e2e/ -n auto
+    status_code=$?
 fi
 
+exit "$status_code"

.github/scripts/tool_test_runner.sh

@@ -2,7 +2,13 @@
 
 npm install --global ganache
 # used to pass --cov=$path and --cov-append to pytest
-pytest "$1" tests/tools/read-storage/test_read_storage.py
 if [ "$1" != "" ]; then
+    pytest "$1" tests/tools/read-storage/test_read_storage.py
+    status_code=$?
     python -m coverage report
-fi
+else
+    pytest tests/tools/read-storage/test_read_storage.py
+    status_code=$?
+fi
+
+exit "$status_code"

.github/scripts/unit_test_runner.sh

@@ -1,7 +1,13 @@
 #!/usr/bin/env bash
 
 # used to pass --cov=$path and --cov-append to pytest
-pytest "$1" tests/unit/
 if [ "$1" != "" ]; then
+    pytest "$1" tests/unit/
+    status_code=$?
     python -m coverage report
-fi
+else
+    pytest tests/unit/
+    status_code=$?
+fi
+
+exit "$status_code"