diff --git a/scripts/react_native_pods_utils/__tests__/script_phases.snap.rb b/scripts/react_native_pods_utils/__tests__/script_phases.snap.rb
new file mode 100644
index 00000000000..b0b5ce13fd7
--- /dev/null
+++ b/scripts/react_native_pods_utils/__tests__/script_phases.snap.rb
@@ -0,0 +1,43 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+def snap_get_script_phases_with_codegen_discovery()
+    return <<~EOS
+    pushd "$PODS_ROOT/../" > /dev/null
+    RCT_SCRIPT_POD_INSTALLATION_ROOT=$(pwd)
+    popd >/dev/null
+
+    export RCT_SCRIPT_RN_DIR=$RCT_SCRIPT_POD_INSTALLATION_ROOT/../..
+    export RCT_SCRIPT_APP_PATH=$RCT_SCRIPT_POD_INSTALLATION_ROOT/
+    export RCT_SCRIPT_CONFIG_FILE_DIR=$RCT_SCRIPT_POD_INSTALLATION_ROOT/node_modules
+    export RCT_SCRIPT_OUTPUT_DIR=$RCT_SCRIPT_POD_INSTALLATION_ROOT
+    export RCT_SCRIPT_FABRIC_ENABLED=true
+    export RCT_SCRIPT_TYPE=withCodegenDiscovery
+
+    SCRIPT_PHASES_SCRIPT=\"$RCT_SCRIPT_RN_DIR/scripts/react_native_pods_utils/script_phases.sh\"
+    /bin/sh -c \"$SCRIPT_PHASES_SCRIPT\"
+    EOS
+end
+
+def snap_get_script_phases_no_codegen_discovery()
+    return <<~EOS
+    pushd "$PODS_ROOT/../" > /dev/null
+    RCT_SCRIPT_POD_INSTALLATION_ROOT=$(pwd)
+    popd >/dev/null
+
+    export RCT_SCRIPT_RN_DIR=${PODS_TARGET_SRCROOT}/../../..
+    export RCT_SCRIPT_LIBRARY_NAME=ScreenshotmanagerSpec
+    export RCT_SCRIPT_OUTPUT_DIR=$RCT_SCRIPT_POD_INSTALLATION_ROOT/build/generated/ios
+    export RCT_SCRIPT_LIBRARY_TYPE=modules
+    export RCT_SCRIPT_JS_SRCS_PATTERN=Native*.js
+    export RCT_SCRIPT_JS_SRCS_DIR=./
+    export RCT_SCRIPT_CODEGEN_MODULE_DIR=.
+    export RCT_SCRIPT_CODEGEN_COMPONENT_DIR=react/renderer/components
+    export RCT_SCRIPT_FILE_LIST=\"[\\\".//NativeScreenshotManager.js\\\"]\"
+
+    SCRIPT_PHASES_SCRIPT=\"$RCT_SCRIPT_RN_DIR/scripts/react_native_pods_utils/script_phases.sh\"
+    /bin/sh -c \"$SCRIPT_PHASES_SCRIPT\"
+    EOS
+end
diff --git a/scripts/react_native_pods_utils/__tests__/script_phases.test.rb b/scripts/react_native_pods_utils/__tests__/script_phases.test.rb
new file mode 100644
index 00000000000..2216bd58a7e
--- /dev/null
+++ b/scripts/react_native_pods_utils/__tests__/script_phases.test.rb
@@ -0,0 +1,36 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require_relative "../script_phases"
+require_relative "./script_phases.snap"
+require 'minitest/autorun'
+
+class TestScriptPhases < Minitest::Test
+
+    def test_get_script_phases_with_codegen_discovery
+      result = get_script_phases_with_codegen_discovery(
+        react_native_path: '../..',
+        relative_app_root: '',
+        relative_config_file_dir: 'node_modules',
+        fabric_enabled: true)
+      assert_equal snap_get_script_phases_with_codegen_discovery, result
+    end
+
+    def test_get_script_phases_no_codegen_discovery()
+        result = get_script_phases_no_codegen_discovery(
+            react_native_path: '../../..',
+            codegen_output_dir: 'build/generated/ios',
+            codegen_module_dir: '.',
+            codegen_component_dir: 'react/renderer/components',
+            library_name: 'ScreenshotmanagerSpec',
+            library_type: 'modules',
+            js_srcs_pattern: 'Native*.js',
+            js_srcs_dir: './',
+            file_list: '[".//NativeScreenshotManager.js"]'
+          )
+        assert_equal snap_get_script_phases_no_codegen_discovery, result
+    end
+
+  end