[9.2] [Fleet] fix fleet_list_agent tests (#241289) (#241406)

# Backport

This will backport the following commits from `main` to `9.2`:
- [[Fleet] fix fleet_list_agent tests
(#241289)](#241289)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Julia
Bardi","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-10-31T07:45:09Z","message":"[Fleet]
fix fleet_list_agent tests (#241289)\n\n## Summary\n\nCloses
https://github.com/elastic/kibana/issues/170690\n\n\n###
Checklist\n\nCheck the PR satisfies following conditions. \n\nReviewers
should verify this PR satisfies this list as well.\n\n- [ ] Any text
added follows [EUI's
writing\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
uses\nsentence case text and includes
[i18n\nsupport](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md)\n-
[
]\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\nwas
added for features that require explanation or tutorials\n- [ ] [Unit or
functional\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\nwere
updated or added to match the most common scenarios\n- [ ] If a plugin
configuration key changed, check if it needs to be\nallowlisted in the
cloud and added to the
[docker\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\n-
[ ] This was checked for breaking HTTP API changes, and any
breaking\nchanges have been approved by the breaking-change committee.
The\n`release_note:breaking` label should be applied in these
situations.\n- [ ] [Flaky
Test\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\nused on any tests changed\n- [ ] The PR description includes the
appropriate Release Notes section,\nand the correct `release_note:*`
label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[ ] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
apply applicable `backport:*` labels.\n\n### Identify risks\n\nDoes this
PR introduce any risks? For example, consider risks like hard\nto test
bugs, performance regression, potential of data loss.\n\nDescribe the
risk, its severity, and mitigation for each identified\nrisk. Invite
stakeholders and evaluate how to proceed before merging.\n\n- [ ] [See
some
risk\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx)\n-
[ ]
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fix fleet_list_agent
tests","number":241289,"url":"https://github.com/elastic/kibana/pull/241289","mergeCommit":{"message":"[Fleet]
fix fleet_list_agent tests (#241289)\n\n## Summary\n\nCloses
https://github.com/elastic/kibana/issues/170690\n\n\n###
Checklist\n\nCheck the PR satisfies following conditions. \n\nReviewers
should verify this PR satisfies this list as well.\n\n- [ ] Any text
added follows [EUI's
writing\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
uses\nsentence case text and includes
[i18n\nsupport](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md)\n-
[
]\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\nwas
added for features that require explanation or tutorials\n- [ ] [Unit or
functional\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\nwere
updated or added to match the most common scenarios\n- [ ] If a plugin
configuration key changed, check if it needs to be\nallowlisted in the
cloud and added to the
[docker\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\n-
[ ] This was checked for breaking HTTP API changes, and any
breaking\nchanges have been approved by the breaking-change committee.
The\n`release_note:breaking` label should be applied in these
situations.\n- [ ] [Flaky
Test\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\nused on any tests changed\n- [ ] The PR description includes the
appropriate Release Notes section,\nand the correct `release_note:*`
label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[ ] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
apply applicable `backport:*` labels.\n\n### Identify risks\n\nDoes this
PR introduce any risks? For example, consider risks like hard\nto test
bugs, performance regression, potential of data loss.\n\nDescribe the
risk, its severity, and mitigation for each identified\nrisk. Invite
stakeholders and evaluate how to proceed before merging.\n\n- [ ] [See
some
risk\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx)\n-
[ ]
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fix fleet_list_agent tests (#241289)\n\n## Summary\n\nCloses
https://github.com/elastic/kibana/issues/170690\n\n\n###
Checklist\n\nCheck the PR satisfies following conditions. \n\nReviewers
should verify this PR satisfies this list as well.\n\n- [ ] Any text
added follows [EUI's
writing\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
uses\nsentence case text and includes
[i18n\nsupport](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md)\n-
[
]\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\nwas
added for features that require explanation or tutorials\n- [ ] [Unit or
functional\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\nwere
updated or added to match the most common scenarios\n- [ ] If a plugin
configuration key changed, check if it needs to be\nallowlisted in the
cloud and added to the
[docker\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\n-
[ ] This was checked for breaking HTTP API changes, and any
breaking\nchanges have been approved by the breaking-change committee.
The\n`release_note:breaking` label should be applied in these
situations.\n- [ ] [Flaky
Test\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\nused on any tests changed\n- [ ] The PR description includes the
appropriate Release Notes section,\nand the correct `release_note:*`
label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[ ] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
apply applicable `backport:*` labels.\n\n### Identify risks\n\nDoes this
PR introduce any risks? For example, consider risks like hard\nto test
bugs, performance regression, potential of data loss.\n\nDescribe the
risk, its severity, and mitigation for each identified\nrisk. Invite
stakeholders and evaluate how to proceed before merging.\n\n- [ ] [See
some
risk\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx)\n-
[ ]
...","sha":"991b518c5536d75a3df34603a109f79b31670163"}},{"branch":"8.19","label":"v8.19.7","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"9.1","label":"v9.1.7","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"9.2","label":"v9.2.1","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: Julia Bardi <[email protected]>

Author: kibanamachine

x-pack/platform/test/fleet_api_integration/apis/agents/list.ts

@@ -19,8 +19,7 @@ export default function ({ getService }: FtrProviderContext) {
   const mockAgentlessApiService = setupMockServer();
   let elasticAgentpkgVersion: string;
 
-  // FLAKY: https://github.com/elastic/kibana/issues/170690
-  describe.skip('fleet_list_agent', () => {
+  describe('fleet_list_agent', () => {
     let mockApiServer: http.Server;
 
     before(async () => {
@@ -316,18 +315,6 @@ export default function ({ getService }: FtrProviderContext) {
     });
 
     it('should not return agentless agents when showAgentless=false', async () => {
-      // Set up default Fleet Server host, needed during agentless agent creation
-      await supertest
-        .post(`/api/fleet/fleet_server_hosts`)
-        .set('kbn-xsrf', 'xxxx')
-        .send({
-          id: 'fleet-default-fleet-server-host',
-          name: 'Default',
-          is_default: true,
-          host_urls: ['https://test.com:8080', 'https://test.com:8081'],
-        })
-        .expect(200);
-
       // Create an agentless agent policy
       const { body: policyRes } = await supertest
         .post('/api/fleet/agent_policies')

x-pack/platform/test/fleet_api_integration/config.agent.ts

@@ -9,12 +9,23 @@ import type { FtrConfigProviderContext } from '@kbn/test';
 
 export default async function ({ readConfigFile }: FtrConfigProviderContext) {
   const baseFleetApiConfig = await readConfigFile(require.resolve('./config.base.ts'));
+  const baseConfig = baseFleetApiConfig.getAll();
 
   return {
-    ...baseFleetApiConfig.getAll(),
+    ...baseConfig,
     testFiles: [require.resolve('./apis/agents')],
     junit: {
       reportName: 'X-Pack Fleet Agent API Integration Tests',
     },
+    kbnTestServer: {
+      ...baseConfig.kbnTestServer,
+      serverArgs: [
+        ...baseConfig.kbnTestServer.serverArgs,
+        // Add cloud configuration specifically for agent tests (needed for agentless functionality in ESS)
+        `--xpack.cloud.id="ftr_fake_cloud_id:aGVsbG8uY29tOjQ0MyRFUzEyM2FiYyRrYm4xMjNhYmM="`,
+        `--xpack.cloud.base_url="https://cloud.elastic.co"`,
+        `--xpack.cloud.deployment_url="/deployments/deploymentId"`,
+      ],
+    },
   };
 }