diff --git a/changelogs/fragments/6755.yml b/changelogs/fragments/6755.yml
new file mode 100644
index 000000000000..8e06db889066
--- /dev/null
+++ b/changelogs/fragments/6755.yml
@@ -0,0 +1,2 @@
+fix:
+- Add test for toast button and validation form ([#6755](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6755))
\ No newline at end of file
diff --git a/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.test.tsx b/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.test.tsx
new file mode 100644
index 000000000000..d61cd0dcabc7
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.test.tsx
@@ -0,0 +1,38 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import React from 'react';
+import { shallow } from 'enzyme';
+import { getManageDataSourceButton } from './manage_data_source_button';
+import { coreMock } from '../../../../../core/public/mocks';
+import { DSM_APP_ID } from '../../plugin';
+import { render } from '@testing-library/react';
+
+describe('ManageDataSourceButton', () => {
+  const applicationMock = coreMock.createStart().application;
+
+  it('renders without crashing', () => {
+    const wrapper = render(getManageDataSourceButton());
+    expect(wrapper).toBeTruthy();
+  });
+
+  it('renders a button with correct label', () => {
+    const { getByTestId } = render(getManageDataSourceButton(applicationMock));
+    const container = getByTestId('manageDataSourceButtonContainer');
+    expect(container).toBeInTheDocument();
+    expect(container).toHaveTextContent('Manage data sources');
+  });
+
+  it('navigates to management app on button click', () => {
+    const { getByTestId } = render(getManageDataSourceButton(applicationMock));
+    const button = getByTestId('manageDataSourceButton');
+    button.click();
+    expect(applicationMock.navigateToApp).toHaveBeenCalledTimes(1);
+
+    expect(applicationMock.navigateToApp).toHaveBeenCalledWith('management', {
+      path: `opensearch-dashboards/${DSM_APP_ID}`, // Assuming DSM_APP_ID is replaced with a value
+    });
+  });
+});
diff --git a/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.tsx b/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.tsx
index 6222f74fdec4..63fcab2fdf70 100644
--- a/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.tsx
+++ b/src/plugins/data_source_management/public/components/toast_button/manage_data_source_button.tsx
@@ -11,9 +11,14 @@ import { DSM_APP_ID } from '../../plugin';
 export const getManageDataSourceButton = (application?: ApplicationStart) => {
   return (
     <>
-      <EuiFlexGroup justifyContent="flexEnd" gutterSize="s">
+      <EuiFlexGroup
+        data-test-subj="manageDataSourceButtonContainer"
+        justifyContent="flexEnd"
+        gutterSize="s"
+      >
         <EuiFlexItem grow={false}>
           <EuiButton
+            data-test-subj="manageDataSourceButton"
             size="s"
             onClick={() =>
               application?.navigateToApp('management', {
diff --git a/src/plugins/data_source_management/public/components/toast_button/reload_button.test.tsx b/src/plugins/data_source_management/public/components/toast_button/reload_button.test.tsx
new file mode 100644
index 000000000000..31223ae6943f
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/toast_button/reload_button.test.tsx
@@ -0,0 +1,26 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { render, fireEvent } from '@testing-library/react';
+import { getReloadButton } from './reload_button';
+
+describe('getReloadButton', () => {
+  it('renders button with correct label', () => {
+    const { getByText } = render(getReloadButton());
+    expect(getByText('Refresh the page')).toBeInTheDocument();
+  });
+
+  it('calls window.location.reload() on button click', () => {
+    const reloadMock = jest.fn();
+    Object.defineProperty(window, 'location', {
+      value: { reload: reloadMock },
+      writable: true,
+    });
+
+    const { getByText } = render(getReloadButton());
+    fireEvent.click(getByText('Refresh the page'));
+    expect(reloadMock).toHaveBeenCalled();
+  });
+});
diff --git a/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts b/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts
index 7b92a355e908..925185b98b6d 100644
--- a/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts
+++ b/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts
@@ -7,11 +7,14 @@ import { AuthType } from '../../types';
 import { CreateDataSourceState } from '../create_data_source_wizard/components/create_form/create_data_source_form';
 import { EditDataSourceState } from '../edit_data_source/components/edit_form/edit_data_source_form';
 import { defaultValidation, performDataSourceFormValidation } from './datasource_form_validation';
-import { mockDataSourceAttributesWithAuth } from '../../mocks';
+import {
+  mockDataSourceAttributesWithAuth,
+  mockDataSourceAttributesWithSigV4Auth,
+} from '../../mocks';
 import { AuthenticationMethod, AuthenticationMethodRegistry } from '../../auth_registry';
 
 describe('DataSourceManagement: Form Validation', () => {
-  describe('validate create/edit datasource', () => {
+  describe('validate create/edit datasource for Username and Password auth type', () => {
     let authenticationMethodRegistry = new AuthenticationMethodRegistry();
     let form: CreateDataSourceState | EditDataSourceState = {
       formErrorsByField: { ...defaultValidation },
@@ -117,4 +120,113 @@ describe('DataSourceManagement: Form Validation', () => {
       expect(result).toBe(true);
     });
   });
+
+  describe('validate create/edit datasource for SigV4 auth type', () => {
+    let authenticationMethodRegistry = new AuthenticationMethodRegistry();
+    let form: CreateDataSourceState | EditDataSourceState = {
+      formErrorsByField: { ...defaultValidation },
+      title: '',
+      description: '',
+      endpoint: '',
+      auth: {
+        type: AuthType.SigV4,
+        credentials: {
+          accesskey: 'test123',
+          secretKey: 'test123',
+          service: 'es',
+          region: 'us-east-1',
+        },
+      },
+    };
+    test('should fail validation when title is empty', () => {
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(false);
+    });
+    test('should fail validation on duplicate title', () => {
+      form.title = 'test';
+      const result = performDataSourceFormValidation(
+        form,
+        ['oldTitle', 'test'],
+        'oldTitle',
+        authenticationMethodRegistry
+      );
+      expect(result).toBe(false);
+    });
+    test('should fail validation when title is longer than 32 characters', () => {
+      form.title = 'test'.repeat(10);
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(false);
+    });
+    test('should fail validation when endpoint is not valid', () => {
+      form.endpoint = mockDataSourceAttributesWithSigV4Auth.endpoint;
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(false);
+    });
+    test('should fail validation when accesskey is empty', () => {
+      form.auth.credentials!.accessKey = 'test';
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(false);
+    });
+    test('should fail validation when secrectKey is empty', () => {
+      form.auth.credentials!.accessKey = 'test';
+      form.auth.credentials!.secretKey = '';
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(false);
+    });
+    test('should NOT fail validation on empty accesskey/secretKey when  No Auth is selected', () => {
+      form.auth.type = AuthType.NoAuth;
+      form.title = 'test';
+      form.endpoint = mockDataSourceAttributesWithSigV4Auth.endpoint;
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(true);
+    });
+    test('should NOT fail validation on all fields', () => {
+      form = { ...form, ...mockDataSourceAttributesWithSigV4Auth };
+      const result = performDataSourceFormValidation(
+        form,
+        [mockDataSourceAttributesWithSigV4Auth.title],
+        mockDataSourceAttributesWithSigV4Auth.title,
+        authenticationMethodRegistry
+      );
+      expect(result).toBe(true);
+    });
+    test('should NOT fail validation when registered auth type is selected and related credential field not empty', () => {
+      authenticationMethodRegistry = new AuthenticationMethodRegistry();
+      const authMethodToBeTested = {
+        name: 'Some Auth Type',
+        credentialSourceOption: {
+          value: 'Some Auth Type',
+          inputDisplay: 'some input',
+        },
+        credentialForm: jest.fn(),
+        credentialFormField: {
+          userNameRegistered: 'some filled in userName from registed auth credential form',
+          passWordRegistered: 'some filled in password from registed auth credential form',
+        },
+      } as AuthenticationMethod;
+
+      authenticationMethodRegistry.registerAuthenticationMethod(authMethodToBeTested);
+
+      const formWithRegisteredAuth: CreateDataSourceState | EditDataSourceState = {
+        formErrorsByField: { ...defaultValidation },
+        title: 'test registered auth type',
+        description: '',
+        endpoint: 'https://test.com',
+        auth: {
+          type: 'Some Auth Type',
+          credentials: {
+            userNameRegistered: 'some filled in userName from registed auth credential form',
+            passWordRegistered: 'some filled in password from registed auth credential form',
+          },
+        },
+      };
+      const result = performDataSourceFormValidation(
+        formWithRegisteredAuth,
+        [],
+        '',
+        authenticationMethodRegistry
+      );
+      expect(result).toBe(true);
+    });
+  });
 });
diff --git a/src/plugins/data_source_management/public/mocks.ts b/src/plugins/data_source_management/public/mocks.ts
index 0e5ec60bc307..a33a55d6799c 100644
--- a/src/plugins/data_source_management/public/mocks.ts
+++ b/src/plugins/data_source_management/public/mocks.ts
@@ -278,6 +278,7 @@ export const mockDataSourceAttributesWithSigV4Auth = {
       accessKey: 'test123',
       secretKey: 'test123',
       region: 'us-east-1',
+      service: 'es',
     },
   },
 };