diff --git a/__tests__/hooks/internal/useSubmitInputInternal.test.ts b/__tests__/hooks/internal/useSubmitInputInternal.test.ts
new file mode 100644
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+++ b/__tests__/hooks/internal/useSubmitInputInternal.test.ts
@@ -0,0 +1,53 @@
+import { renderHook, act } from "@testing-library/react";
+import { expect } from "@jest/globals";
+
+import { useSubmitInputInternal } from "../../../src/hooks/internal/useSubmitInputInternal";
+import { useRcbEventInternal } from "../../../src/hooks/internal/useRcbEventInternal";
+import { RcbEvent } from "../../../src/constants/RcbEvent";
+
+import { TestChatBotProvider } from "../../__mocks__/TestChatBotContext";
+
+// mocks internal hooks
+jest.mock("../../../src/hooks/internal/useRcbEventInternal");
+const mockUseRcbEventInternal = useRcbEventInternal as jest.MockedFunction<typeof useRcbEventInternal>;
+
+/**
+ * Test for useAudioInternal hook.
+ */
+describe("useSubmitInputInternal Hook", () => {
+    let callRcbEventMock: jest.Mock<any, any, any>;
+
+    beforeEach(() => {
+		jest.clearAllMocks();
+
+        // mocks rcb event handler
+		callRcbEventMock = jest.fn().mockReturnValue({ defaultPrevented: false });
+		mockUseRcbEventInternal.mockReturnValue({
+			callRcbEvent: callRcbEventMock,
+		});
+	});
+
+    // Test to ensure initial values (handleSubmitText) are returned correctly from the hook
+    it("should return initial values from context", () => {
+        const { result } = renderHook(() => useSubmitInputInternal(), {
+			wrapper: TestChatBotProvider,
+		});
+
+        expect(result.current.handleSubmitText).toEqual(expect.any(Function));
+    });
+
+    it("should submit input text to rcb event handler", () => {
+        const params = { inputText: 'some test', sendInChat: true };
+        const { result } = renderHook(() => useSubmitInputInternal(), {
+			wrapper: TestChatBotProvider,
+		});
+
+        // simulates submitting text
+		act(() => {
+			result.current.handleSubmitText(params.inputText, params.sendInChat);
+		});
+
+        // checks if callRcbEvent was called with rcb-user-submit-text and correct arguments
+		expect(callRcbEventMock).toHaveBeenCalledWith(RcbEvent.USER_SUBMIT_TEXT, params);
+    });
+});
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