feat: Implement saml auth providers API endpoint

packages/backend/src/controllers/api/v1/saml-auth-providers/get-saml-auth-providers.ee.test.js

@@ -0,0 +1,30 @@
+import { vi, describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+import app from '../../../../app.js';
+import { createSamlAuthProvider } from '../../../../../test/factories/saml-auth-provider.ee.js';
+import getSamlAuthProvidersMock from '../../../../../test/mocks/rest/api/v1/saml-auth-providers/get-saml-auth-providers.js';
+import * as license from '../../../../helpers/license.ee.js';
+
+describe('GET /api/v1/saml-auth-providers', () => {
+  let samlAuthProviderOne, samlAuthProviderTwo;
+
+  beforeEach(async () => {
+    samlAuthProviderOne = await createSamlAuthProvider();
+    samlAuthProviderTwo = await createSamlAuthProvider();
+  });
+
+  it('should return saml auth providers', async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    const response = await request(app)
+      .get('/api/v1/saml-auth-providers')
+      .expect(200);
+
+    const expectedPayload = await getSamlAuthProvidersMock([
+      samlAuthProviderTwo,
+      samlAuthProviderOne,
+    ]);
+
+    expect(response.body).toEqual(expectedPayload);
+  });
+});