Add integration test for loading deps w/o deps (#188)

src/integration_tests/tests/plugin.bats

@@ -0,0 +1,19 @@
+load 'clean'
+
+@test "Ensure plugin does not require external modules" {
+    PYTHON=$TEST_TEMP_DIR/venv/bin/python
+
+    if [ $RUNNER_OS == "Windows" ]; then
+        skip "This test does not support Windows."
+    fi
+
+    # Install awscli-login without deps
+    python -m venv $TEST_TEMP_DIR/venv
+    $PYTHON -m pip install --no-deps ../..
+
+    # Import plugin in clean venv
+    $PYTHON -c 'import awscli_login'
+
+    # Load version in clean venv
+    $PYTHON -c 'from awscli_login._version import __version__'
+}