Add view all tab to the clusters page

app/assets/javascripts/clusters_list/components/agent_empty_state.vue

@@ -11,9 +11,6 @@ export default {
   getStartedDocsUrl: helpPagePath('user/clusters/agent/index', {
     anchor: 'define-a-configuration-repository',
   }),
-  integrationsDocsUrl: helpPagePath('user/clusters/agent/index', {
-    anchor: 'get-started-with-gitops-and-the-gitlab-agent',
-  }),
   components: {
     GlButton,
     GlEmptyState,
@@ -30,6 +27,11 @@ export default {
       type: Boolean,
       required: true,
     },
+    isChildComponent: {
+      default: false,
+      required: false,
+      type: Boolean,
+    },
   },
   computed: {
     repositoryPath() {
@@ -92,6 +94,7 @@ export default {
 
     <template #actions>
       <gl-button
+        v-if="!isChildComponent"
         v-gl-modal-directive="$options.modalId"
         :disabled="!hasConfigurations"
         data-testid="integration-primary-button"

app/assets/javascripts/clusters_list/components/agents.vue

@@ -20,6 +20,9 @@ export default {
         this.updateTreeList(data);
         return data;
       },
+      result() {
+        this.emitAgentsLoaded();
+      },
     },
   },
   components: {
@@ -36,11 +39,21 @@ export default {
       required: false,
       type: String,
     },
+    isChildComponent: {
+      default: false,
+      required: false,
+      type: Boolean,
+    },
+    limit: {
+      default: null,
+      required: false,
+      type: Number,
+    },
   },
   data() {
     return {
       cursor: {
-        first: MAX_LIST_COUNT,
+        first: this.limit ? this.limit : MAX_LIST_COUNT,
         last: null,
       },
       folderList: {},
@@ -68,7 +81,7 @@ export default {
       return this.$apollo.queries.agents.loading;
     },
     showPagination() {
-      return this.agentPageInfo.hasPreviousPage || this.agentPageInfo.hasNextPage;
+      return !this.limit && (this.agentPageInfo.hasPreviousPage || this.agentPageInfo.hasNextPage);
     },
     treePageInfo() {
       return this.agents?.project?.repository?.tree?.trees?.pageInfo || {};
@@ -128,6 +141,10 @@ export default {
       }
       return 'unused';
     },
+    emitAgentsLoaded() {
+      const count = this.agents?.project?.clusterAgents?.count;
+      this.$emit('onAgentsLoad', count);
+    },
   },
 };
 </script>
@@ -144,7 +161,11 @@ export default {
       </div>
     </div>
 
-    <agent-empty-state v-else :has-configurations="hasConfigurations" />
+    <agent-empty-state
+      v-else
+      :has-configurations="hasConfigurations"
+      :is-child-component="isChildComponent"
+    />
   </section>
 
   <gl-alert v-else variant="danger" :dismissible="false">

app/assets/javascripts/clusters_list/components/clusters.vue

@@ -34,6 +34,18 @@ export default {
   directives: {
     GlTooltip: GlTooltipDirective,
   },
+  props: {
+    isChildComponent: {
+      default: false,
+      required: false,
+      type: Boolean,
+    },
+    limit: {
+      default: null,
+      required: false,
+      type: Number,
+    },
+  },
   computed: {
     ...mapState([
       'clusters',
@@ -100,10 +112,14 @@ export default {
     },
   },
   mounted() {
+    if (this.limit) {
+      this.setClustersPerPage(this.limit);
+    }
+
     this.fetchClusters();
   },
   methods: {
-    ...mapActions(['fetchClusters', 'reportSentryError', 'setPage']),
+    ...mapActions(['fetchClusters', 'reportSentryError', 'setPage', 'setClustersPerPage']),
     k8sQuantityToGb(quantity) {
       if (!quantity) {
         return 0;
@@ -312,10 +328,10 @@ export default {
       </template>
     </gl-table>
 
-    <clusters-empty-state v-else />
+    <clusters-empty-state v-else :is-child-component="isChildComponent" />
 
     <gl-pagination
-      v-if="hasClustersPerPage"
+      v-if="hasClustersPerPage && !limit"
       v-model="currentPage"
       :per-page="clustersPerPage"
       :total-items="totalClusters"

app/assets/javascripts/clusters_list/components/clusters_empty_state.vue

@@ -13,6 +13,13 @@ export default {
     GlSprintf,
   },
   inject: ['emptyStateHelpText', 'clustersEmptyStateImage', 'newClusterPath'],
+  props: {
+    isChildComponent: {
+      default: false,
+      required: false,
+      type: Boolean,
+    },
+  },
   learnMoreHelpUrl: helpPagePath('user/project/clusters/index'),
   multipleClustersHelpUrl: helpPagePath('user/project/clusters/multiple_kubernetes_clusters'),
   computed: {
@@ -54,6 +61,7 @@ export default {
 
     <template #actions>
       <gl-button
+        v-if="!isChildComponent"
         data-testid="integration-primary-button"
         data-qa-selector="add_kubernetes_cluster_link"
         category="primary"

app/assets/javascripts/clusters_list/components/clusters_main_view.vue

 <script>
 import { GlTabs, GlTab } from '@gitlab/ui';
-import { CLUSTERS_TABS } from '../constants';
+import { CLUSTERS_TABS, MAX_CLUSTERS_LIST, MAX_LIST_COUNT, AGENT } from '../constants';
 import Agents from './agents.vue';
 import InstallAgentModal from './install_agent_modal.vue';
 import ClustersActions from './clusters_actions.vue';
 import Clusters from './clusters.vue';
+import ClustersViewAll from './clusters_view_all.vue';
 
 export default {
   components: {
     GlTabs,
     GlTab,
     ClustersActions,
+    ClustersViewAll,
     Clusters,
     Agents,
     InstallAgentModal,
@@ -26,11 +28,14 @@ export default {
   data() {
     return {
       selectedTabIndex: 0,
+      maxAgents: MAX_CLUSTERS_LIST,
     };
   },
   methods: {
     onTabChange(tabName) {
       this.selectedTabIndex = CLUSTERS_TABS.findIndex((tab) => tab.queryParamValue === tabName);
+
+      this.maxAgents = tabName === AGENT ? MAX_LIST_COUNT : MAX_CLUSTERS_LIST;
     },
   },
 };
@@ -63,6 +68,6 @@ export default {
       </template>
     </gl-tabs>
 
-    <install-agent-modal :default-branch-name="defaultBranchName" />
+    <install-agent-modal :default-branch-name="defaultBranchName" :max-agents="maxAgents" />
   </div>
 </template>

app/assets/javascripts/clusters_list/components/clusters_view_all.vue

+<script>
+import {
+  GlCard,
+  GlSprintf,
+  GlPopover,
+  GlLink,
+  GlButton,
+  GlBadge,
+  GlLoadingIcon,
+  GlModalDirective,
+} from '@gitlab/ui';
+import { mapState } from 'vuex';
+import {
+  AGENT_CARD_INFO,
+  CERTIFICATE_BASED_CARD_INFO,
+  MAX_CLUSTERS_LIST,
+  INSTALL_AGENT_MODAL_ID,
+} from '../constants';
+import Clusters from './clusters.vue';
+import Agents from './agents.vue';
+
+export default {
+  components: {
+    GlCard,
+    GlSprintf,
+    GlPopover,
+    GlLink,
+    GlButton,
+    GlBadge,
+    GlLoadingIcon,
+    Clusters,
+    Agents,
+  },
+  directives: {
+    GlModalDirective,
+  },
+  AGENT_CARD_INFO,
+  CERTIFICATE_BASED_CARD_INFO,
+  MAX_CLUSTERS_LIST,
+  INSTALL_AGENT_MODAL_ID,
+  inject: ['addClusterPath'],
+  props: {
+    defaultBranchName: {
+      default: '.noBranch',
+      required: false,
+      type: String,
+    },
+  },
+  data() {
+    return {
+      loadingAgents: true,
+      totalAgents: null,
+    };
+  },
+  computed: {
+    ...mapState(['loadingClusters', 'totalClusters']),
+    isLoading() {
+      return this.loadingAgents || this.loadingClusters;
+    },
+    agentsCardTitle() {
+      let cardTitle;
+      if (this.totalAgents > 0) {
+        cardTitle = {
+          message: AGENT_CARD_INFO.title,
+          number: this.totalAgents < MAX_CLUSTERS_LIST ? this.totalAgents : MAX_CLUSTERS_LIST,
+          total: this.totalAgents,
+        };
+      } else {
+        cardTitle = {
+          message: AGENT_CARD_INFO.emptyTitle,
+        };
+      }
+
+      return cardTitle;
+    },
+    clustersCardTitle() {
+      let cardTitle;
+      if (this.totalClusters > 0) {
+        cardTitle = {
+          message: CERTIFICATE_BASED_CARD_INFO.title,
+          number: this.totalClusters < MAX_CLUSTERS_LIST ? this.totalClusters : MAX_CLUSTERS_LIST,
+          total: this.totalClusters,
+        };
+      } else {
+        cardTitle = {
+          message: CERTIFICATE_BASED_CARD_INFO.emptyTitle,
+        };
+      }
+
+      return cardTitle;
+    },
+  },
+  methods: {
+    cardFooterNumber(number) {
+      return number > MAX_CLUSTERS_LIST ? number : '';
+    },
+    onAgentsLoad(number) {
+      this.totalAgents = number;
+      this.loadingAgents = false;
+    },
+    changeTab($event, tab) {
+      $event.preventDefault();
+      this.$emit('changeTab', tab);
+    },
+  },
+};
+</script>
+<template>
+  <div>
+    <gl-loading-icon v-if="isLoading" size="md" />
+    <div v-show="!isLoading" data-testid="clusters-cards-container">
+      <gl-card
+        header-class="gl-bg-white gl-display-flex gl-align-items-center gl-justify-content-space-between gl-py-4"
+        body-class="gl-pb-0"
+        footer-class="gl-text-right"
+      >
+        <template #header>
+          <h3 data-testid="agent-card-title" class="gl-my-0 gl-font-weight-normal gl-font-size-h2">
+            <gl-sprintf :message="agentsCardTitle.message"
+              ><template #number>{{ agentsCardTitle.number }}</template>
+              <template #total>{{ agentsCardTitle.total }}</template>
+            </gl-sprintf>
+          </h3>
+
+          <gl-badge id="clusters-recommended-badge" size="md" variant="info">{{
+            $options.AGENT_CARD_INFO.tooltip.label
+          }}</gl-badge>
+
+          <gl-popover
+            target="clusters-recommended-badge"
+            container="viewport"
+            placement="bottom"
+            :title="$options.AGENT_CARD_INFO.tooltip.title"
+          >
+            <p class="gl-mb-0">
+              <gl-sprintf :message="$options.AGENT_CARD_INFO.tooltip.text">
+                <template #link="{ content }">
+                  <gl-link
+                    :href="$options.AGENT_CARD_INFO.tooltip.link"
+                    target="_blank"
+                    class="gl-font-sm"
+                  >
+                    {{ content }}</gl-link
+                  >
+                </template>
+              </gl-sprintf>
+            </p>
+          </gl-popover>
+        </template>
+
+        <agents
+          :limit="$options.MAX_CLUSTERS_LIST"
+          :default-branch-name="defaultBranchName"
+          :is-child-component="true"
+          @onAgentsLoad="onAgentsLoad"
+        />
+
+        <template #footer>
+          <gl-link
+            v-if="totalAgents"
+            data-testid="agents-tab-footer-link"
+            :href="`?tab=${$options.AGENT_CARD_INFO.tabName}`"
+            @click="changeTab($event, $options.AGENT_CARD_INFO.tabName)"
+            ><gl-sprintf :message="$options.AGENT_CARD_INFO.footerText"
+              ><template #number>{{ cardFooterNumber(totalAgents) }}</template></gl-sprintf
+            ></gl-link
+          ><gl-button
+            v-gl-modal-directive="$options.INSTALL_AGENT_MODAL_ID"
+            class="gl-ml-4"
+            category="secondary"
+            variant="confirm"
+            >{{ $options.AGENT_CARD_INFO.actionText }}</gl-button
+          >
+        </template>
+      </gl-card>
+
+      <gl-card
+        class="gl-mt-6"
+        header-class="gl-bg-white gl-display-flex gl-align-items-center gl-justify-content-space-between"
+        body-class="gl-pb-0"
+        footer-class="gl-text-right"
+      >
+        <template #header>
+          <h3
+            class="gl-my-1 gl-font-weight-normal gl-font-size-h2"
+            data-testid="clusters-card-title"
+          >
+            <gl-sprintf :message="clustersCardTitle.message"
+              ><template #number>{{ clustersCardTitle.number }}</template>
+              <template #total>{{ clustersCardTitle.total }}</template>
+            </gl-sprintf>
+          </h3>
+        </template>
+
+        <clusters :limit="$options.MAX_CLUSTERS_LIST" :is-child-component="true" />
+
+        <template #footer>
+          <gl-link
+            v-if="totalClusters"
+            data-testid="clusters-tab-footer-link"
+            :href="`?tab=${$options.CERTIFICATE_BASED_CARD_INFO.tabName}`"
+            @click="changeTab($event, $options.CERTIFICATE_BASED_CARD_INFO.tabName)"
+            ><gl-sprintf :message="$options.CERTIFICATE_BASED_CARD_INFO.footerText"
+              ><template #number>{{ cardFooterNumber(totalClusters) }}</template></gl-sprintf
+            ></gl-link
+          ><gl-button
+            category="secondary"
+            variant="confirm"
+            class="gl-ml-4"
+            :href="addClusterPath"
+            >{{ $options.CERTIFICATE_BASED_CARD_INFO.actionText }}</gl-button
+          >
+        </template>
+      </gl-card>
+    </div>
+  </div>
+</template>

app/assets/javascripts/clusters_list/components/install_agent_modal.vue

@@ -12,7 +12,7 @@ import { helpPagePath } from '~/helpers/help_page_helper';
 import ClipboardButton from '~/vue_shared/components/clipboard_button.vue';
 import CodeBlock from '~/vue_shared/components/code_block.vue';
 import { generateAgentRegistrationCommand } from '../clusters_util';
-import { INSTALL_AGENT_MODAL_ID, I18N_INSTALL_AGENT_MODAL, MAX_LIST_COUNT } from '../constants';
+import { INSTALL_AGENT_MODAL_ID, I18N_INSTALL_AGENT_MODAL } from '../constants';
 import { addAgentToStore } from '../graphql/cache_update';
 import createAgent from '../graphql/mutations/create_agent.mutation.graphql';
 import createAgentToken from '../graphql/mutations/create_agent_token.mutation.graphql';
@@ -41,6 +41,10 @@ export default {
       required: false,
       type: String,
     },
+    maxAgents: {
+      required: true,
+      type: Number,
+    },
   },
   data() {
     return {
@@ -75,7 +79,7 @@ export default {
     getAgentsQueryVariables() {
       return {
         defaultBranchName: this.defaultBranchName,
-        first: MAX_LIST_COUNT,
+        first: this.maxAgents,
         last: null,
         projectPath: this.projectPath,
       };

app/assets/javascripts/clusters_list/constants.js

 import { __, s__, sprintf } from '~/locale';
+import { helpPagePath } from '~/helpers/help_page_helper';
 
 export const MAX_LIST_COUNT = 25;
 export const INSTALL_AGENT_MODAL_ID = 'install-agent';
@@ -167,7 +168,40 @@ export const I18N_CLUSTERS_EMPTY_STATE = {
   buttonText: s__('ClusterIntegration|Connect with a certificate'),
 };
 
+export const AGENT_CARD_INFO = {
+  tabName: 'agent',
+  title: sprintf(s__('ClusterAgents|%{number} of %{total} Agent based integrations')),
+  emptyTitle: s__('ClusterAgents|No Agent based integrations'),
+  tooltip: {
+    label: s__('ClusterAgents|Recommended'),
+    title: s__('ClusterAgents|GitLab Agents'),
+    text: sprintf(
+      s__(
+        'ClusterAgents|GitLab Agents provide an increased level of security when integrating with clusters. %{linkStart}Learn more about the GitLab Kubernetes Agent.%{linkEnd}',
+      ),
+    ),
+    link: helpPagePath('user/clusters/agent/index'),
+  },
+  actionText: s__('ClusterAgents|Install new Agent'),
+  footerText: sprintf(s__('ClusterAgents|View all %{number} Agent based integrations')),
+};
+
+export const CERTIFICATE_BASED_CARD_INFO = {
+  tabName: 'certificate_based',
+  title: sprintf(s__('ClusterAgents|%{number} of %{total} Certificate based integrations')),
+  emptyTitle: s__('ClusterAgents|No Certificate based integrations'),
+  actionText: s__('ClusterAgents|Connect existing cluster'),
+  footerText: sprintf(s__('ClusterAgents|View all %{number} Certificate based integrations')),
+};
+
+export const MAX_CLUSTERS_LIST = 6;
+
 export const CLUSTERS_TABS = [
+  {
+    title: s__('ClusterAgents|All'),
+    component: 'ClustersViewAll',
+    queryParamValue: 'all',
+  },
   {
     title: s__('ClusterAgents|Agent'),
     component: 'agents',
@@ -186,3 +220,6 @@ export const CLUSTERS_ACTIONS = {
   connectWithAgent: s__('ClusterAgents|Connect with Agent'),
   connectExistingCluster: s__('ClusterAgents|Connect with certificate'),
 };
+
+export const AGENT = 'agent';
+export const CERTIFICATE_BASED = 'certificate_based';

app/assets/javascripts/clusters_list/graphql/cache_update.js

@@ -17,6 +17,7 @@ export function addAgentToStore(store, createClusterAgent, query, variables) {
     };
 
     draftData.project.clusterAgents.nodes.push(clusterAgent);
+    draftData.project.clusterAgents.count += 1;
     draftData.project.repository.tree.trees.nodes.push(configuration);
   });
 

app/assets/javascripts/clusters_list/graphql/queries/get_agents.query.graphql

@@ -20,6 +20,8 @@ query getAgents(
       pageInfo {
         ...PageInfo
       }
+
+      count
     }
 
     repository {

app/assets/javascripts/clusters_list/store/actions.js

@@ -30,7 +30,13 @@ export const fetchClusters = ({ state, commit, dispatch }) => {
 
   const poll = new Poll({
     resource: {
-      fetchClusters: (paginatedEndPoint) => axios.get(paginatedEndPoint),
+      fetchClusters: (paginatedEndPoint) =>
+        axios.get(paginatedEndPoint, {
+          params: {
+            page: state.page,
+            per_page: state.clustersPerPage,
+          },
+        }),
     },
     data: `${state.endpoint}?page=${state.page}`,
     method: 'fetchClusters',
@@ -78,3 +84,7 @@ export const fetchClusters = ({ state, commit, dispatch }) => {
 export const setPage = ({ commit }, page) => {
   commit(types.SET_PAGE, page);
 };
+
+export const setClustersPerPage = ({ commit }, limit) => {
+  commit(types.SET_CLUSTERS_PER_PAGE, limit);
+};

app/assets/javascripts/clusters_list/store/mutation_types.js

@@ -2,3 +2,4 @@ export const SET_CLUSTERS_DATA = 'SET_CLUSTERS_DATA';
 export const SET_LOADING_CLUSTERS = 'SET_LOADING_CLUSTERS';
 export const SET_LOADING_NODES = 'SET_LOADING_NODES';
 export const SET_PAGE = 'SET_PAGE';
+export const SET_CLUSTERS_PER_PAGE = 'SET_CLUSTERS_PER_PAGE';

app/assets/javascripts/clusters_list/store/mutations.js

@@ -18,4 +18,7 @@ export default {
   [types.SET_PAGE](state, value) {
     state.page = Number(value) || 1;
   },
+  [types.SET_CLUSTERS_PER_PAGE](state, value) {
+    state.clustersPerPage = Number(value) || 1;
+  },
 };

app/assets/javascripts/clusters_list/store/state.js

@@ -5,7 +5,7 @@ export default (initialState = {}) => ({
   endpoint: initialState.endpoint,
   hasAncestorClusters: false,
   clusters: [],
-  clustersPerPage: 0,
+  clustersPerPage: 20,
   loadingClusters: true,
   loadingNodes: true,
   page: 1,

locale/gitlab.pot

@@ -7318,6 +7318,12 @@ msgstr ""
 msgid "Cluster type must be specificed for Stages::ClusterEndpointInserter"
 msgstr ""
 
+msgid "ClusterAgents|%{number} of %{total} Agent based integrations"
+msgstr ""
+
+msgid "ClusterAgents|%{number} of %{total} Certificate based integrations"
+msgstr ""
+
 msgid "ClusterAgents|Access tokens"
 msgstr ""
 
@@ -7333,6 +7339,9 @@ msgstr ""
 msgid "ClusterAgents|Agent never connected to GitLab"
 msgstr ""
 
+msgid "ClusterAgents|All"
+msgstr ""
+
 msgid "ClusterAgents|Alternative installation methods"
 msgstr ""
 
@@ -7351,6 +7360,9 @@ msgstr ""
 msgid "ClusterAgents|Configuration"
 msgstr ""
 
+msgid "ClusterAgents|Connect existing cluster"
+msgstr ""
+
 msgid "ClusterAgents|Connect with Agent"
 msgstr ""
 
@@ -7387,6 +7399,12 @@ msgstr ""
 msgid "ClusterAgents|For alternative installation methods %{linkStart}go to the documentation%{linkEnd}."
 msgstr ""
 
+msgid "ClusterAgents|GitLab Agents"
+msgstr ""
+
+msgid "ClusterAgents|GitLab Agents provide an increased level of security when integrating with clusters. %{linkStart}Learn more about the GitLab Kubernetes Agent.%{linkEnd}"
+msgstr ""
+
 msgid "ClusterAgents|Go to the repository"
 msgstr ""
 
@@ -7423,12 +7441,21 @@ msgstr ""
 msgid "ClusterAgents|Never connected"
 msgstr ""
 
+msgid "ClusterAgents|No Agent based integrations"
+msgstr ""
+
+msgid "ClusterAgents|No Certificate based integrations"
+msgstr ""
+
 msgid "ClusterAgents|Not connected"
 msgstr ""
 
 msgid "ClusterAgents|Read more about getting started"
 msgstr ""
 
+msgid "ClusterAgents|Recommended"
+msgstr ""
+
 msgid "ClusterAgents|Recommended installation method"
 msgstr ""
 
@@ -7477,6 +7504,12 @@ msgstr ""
 msgid "ClusterAgents|Use GitLab Agents to more securely integrate with your clusters to deploy your applications, run your pipelines, use review apps and much more."
 msgstr ""
 
+msgid "ClusterAgents|View all %{number} Agent based integrations"
+msgstr ""
+
+msgid "ClusterAgents|View all %{number} Certificate based integrations"
+msgstr ""
+
 msgid "ClusterAgents|You will need to create a token to connect to your agent"
 msgstr ""
 

spec/features/projects/cluster_agents_spec.rb

@@ -22,7 +22,7 @@ RSpec.describe 'ClusterAgents', :js do
     end
 
     it 'displays empty state', :aggregate_failures do
-      expect(page).to have_content('Connect with a GitLab Agent')
+      expect(page).to have_content('Install new Agent')
       expect(page).to have_selector('.empty-state')
     end
   end

spec/frontend/clusters_list/components/agents_spec.js

@@ -14,7 +14,7 @@ localVue.use(VueApollo);
 describe('Agents', () => {
   let wrapper;
 
-  const propsData = {
+  const defaultProps = {
     defaultBranchName: 'default',
   };
   const provideData = {
@@ -22,12 +22,12 @@ describe('Agents', () => {
     kasAddress: 'kas.example.com',
   };
 
-  const createWrapper = ({ agents = [], pageInfo = null, trees = [] }) => {
+  const createWrapper = ({ props = {}, agents = [], pageInfo = null, trees = [], count = 0 }) => {
     const provide = provideData;
     const apolloQueryResponse = {
       data: {
         project: {
-          clusterAgents: { nodes: agents, pageInfo, tokens: { nodes: [] } },
+          clusterAgents: { nodes: agents, pageInfo, tokens: { nodes: [] }, count },
           repository: { tree: { trees: { nodes: trees, pageInfo } } },
         },
       },
@@ -40,7 +40,10 @@ describe('Agents', () => {
     wrapper = shallowMount(Agents, {
       localVue,
       apolloProvider,
-      propsData,
+      propsData: {
+        ...defaultProps,
+        ...props,
+      },
       provide: provideData,
     });
 
@@ -80,6 +83,8 @@ describe('Agents', () => {
       },
     ];
 
+    const count = 2;
+
     const trees = [
       {
         name: 'agent-2',
@@ -120,7 +125,7 @@ describe('Agents', () => {
     ];
 
     beforeEach(() => {
-      return createWrapper({ agents, trees });
+      return createWrapper({ agents, count, trees });
     });
 
     it('should render agent table', () => {
@@ -132,6 +137,10 @@ describe('Agents', () => {
       expect(findAgentTable().props('agents')).toMatchObject(expectedAgentsList);
     });
 
+    it('should emit agents count to the parent component', () => {
+      expect(wrapper.emitted().onAgentsLoad).toEqual([[count]]);
+    });
+
     describe('when the agent has recently connected tokens', () => {
       it('should set agent status to active', () => {
         expect(findAgentTable().props('agents')).toMatchObject(expectedAgentsList);
@@ -179,6 +188,20 @@ describe('Agents', () => {
       it('should pass pageInfo to the pagination component', () => {
         expect(findPaginationButtons().props()).toMatchObject(pageInfo);
       });
+
+      describe('when limit is passed from the parent component', () => {
+        beforeEach(() => {
+          return createWrapper({
+            props: { limit: 6 },
+            agents,
+            pageInfo,
+          });
+        });
+
+        it('should not render pagination buttons', () => {
+          expect(findPaginationButtons().exists()).toBe(false);
+        });
+      });
     });
   });
 
@@ -235,7 +258,7 @@ describe('Agents', () => {
     beforeEach(() => {
       wrapper = shallowMount(Agents, {
         mocks,
-        propsData,
+        propsData: defaultProps,
         provide: provideData,
       });
 

spec/frontend/clusters_list/components/clusters_empty_state_spec.js

@@ -11,6 +11,10 @@ const canAddCluster = true;
 describe('ClustersEmptyStateComponent', () => {
   let wrapper;
 
+  const propsData = {
+    isChildComponent: false,
+  };
+
   const provideData = {
     clustersEmptyStateImage,
     emptyStateHelpText: null,
@@ -27,6 +31,7 @@ describe('ClustersEmptyStateComponent', () => {
   beforeEach(() => {
     wrapper = shallowMountExtended(ClustersEmptyState, {
       store: ClusterStore(entryData),
+      propsData,
       provide: provideData,
       stubs: { GlEmptyState },
     });
@@ -36,8 +41,10 @@ describe('ClustersEmptyStateComponent', () => {
     wrapper.destroy();
   });
 
-  it('should render the action button', () => {
-    expect(findButton().exists()).toBe(true);
+  describe('when the component is loaded independently', () => {
+    it('should render the action button', () => {
+      expect(findButton().exists()).toBe(true);
+    });
   });
 
   describe('when the help text is not provided', () => {
@@ -46,11 +53,31 @@ describe('ClustersEmptyStateComponent', () => {
     });
   });
 
+  describe('when the component is loaded as a child component', () => {
+    beforeEach(() => {
+      propsData.isChildComponent = true;
+      wrapper = shallowMountExtended(ClustersEmptyState, {
+        store: ClusterStore(entryData),
+        propsData,
+        provide: provideData,
+      });
+    });
+
+    afterEach(() => {
+      propsData.isChildComponent = false;
+    });
+
+    it('should not render the action button', () => {
+      expect(findButton().exists()).toBe(false);
+    });
+  });
+
   describe('when the help text is provided', () => {
     beforeEach(() => {
       provideData.emptyStateHelpText = emptyStateHelpText;
       wrapper = shallowMountExtended(ClustersEmptyState, {
         store: ClusterStore(entryData),
+        propsData,
         provide: provideData,
       });
     });
@@ -61,8 +88,14 @@ describe('ClustersEmptyStateComponent', () => {
   });
 
   describe('when the user cannot add clusters', () => {
+    entryData.canAddCluster = false;
     beforeEach(() => {
-      wrapper.vm.$store.state.canAddCluster = false;
+      wrapper = shallowMountExtended(ClustersEmptyState, {
+        store: ClusterStore(entryData),
+        propsData,
+        provide: provideData,
+        stubs: { GlEmptyState },
+      });
     });
     it('should disable the button', () => {
       expect(findButton().props('disabled')).toBe(true);

spec/frontend/clusters_list/components/clusters_main_view_spec.js

 import { GlTabs, GlTab } from '@gitlab/ui';
 import { shallowMountExtended } from 'helpers/vue_test_utils_helper';
 import ClustersMainView from '~/clusters_list/components/clusters_main_view.vue';
-import { CLUSTERS_TABS } from '~/clusters_list/constants';
+import InstallAgentModal from '~/clusters_list/components/install_agent_modal.vue';
+import {
+  AGENT,
+  CERTIFICATE_BASED,
+  CLUSTERS_TABS,
+  MAX_CLUSTERS_LIST,
+  MAX_LIST_COUNT,
+} from '~/clusters_list/constants';
 
 const defaultBranchName = 'default-branch';
 
@@ -26,6 +33,7 @@ describe('ClustersMainViewComponent', () => {
   const findAllTabs = () => wrapper.findAllComponents(GlTab);
   const findGlTabAtIndex = (index) => findAllTabs().at(index);
   const findComponent = () => wrapper.findByTestId('clusters-tab-component');
+  const findModal = () => wrapper.findComponent(InstallAgentModal);
 
   it('renders `GlTabs` with `syncActiveTabWithQueryParams` and `queryParamName` props set', () => {
     expect(findTabs().exists()).toBe(true);
@@ -40,11 +48,16 @@ describe('ClustersMainViewComponent', () => {
     expect(findComponent().props('defaultBranchName')).toBe(defaultBranchName);
   });
 
+  it('passes correct max-agents param to the modal', () => {
+    expect(findModal().props('maxAgents')).toBe(MAX_CLUSTERS_LIST);
+  });
+
   describe('tabs', () => {
     it.each`
-      tabTitle               | queryParamValue        | lineNumber
-      ${'Agent'}             | ${'agent'}             | ${0}
-      ${'Certificate based'} | ${'certificate_based'} | ${1}
+      tabTitle               | queryParamValue      | lineNumber
+      ${'All'}               | ${'all'}             | ${0}
+      ${'Agent'}             | ${AGENT}             | ${1}
+      ${'Certificate based'} | ${CERTIFICATE_BASED} | ${2}
     `(
       'renders correct tab title and query param value',
       ({ tabTitle, queryParamValue, lineNumber }) => {
@@ -53,4 +66,17 @@ describe('ClustersMainViewComponent', () => {
       },
     );
   });
+
+  describe('when the child component emits the tab change event', () => {
+    beforeEach(() => {
+      findComponent().vm.$emit('changeTab', AGENT);
+    });
+    it('changes the tab', () => {
+      expect(findTabs().attributes('value')).toBe('1');
+    });
+
+    it('passes correct max-agents param to the modal', () => {
+      expect(findModal().props('maxAgents')).toBe(MAX_LIST_COUNT);
+    });
+  });
 });

spec/frontend/clusters_list/components/clusters_spec.js

@@ -48,9 +48,9 @@ describe('Clusters', () => {
     mock.onGet(`${endpoint}?page=${header['x-page']}`).reply(response, body, header);
   };
 
-  const mountWrapper = () => {
+  const createWrapper = ({ propsData = {} }) => {
     store = ClusterStore(entryData);
-    wrapper = mount(Clusters, { provide: provideData, store, stubs: { GlTable } });
+    wrapper = mount(Clusters, { propsData, provide: provideData, store, stubs: { GlTable } });
     return axios.waitForAll();
   };
 
@@ -70,7 +70,7 @@ describe('Clusters', () => {
     mock = new MockAdapter(axios);
     mockPollingApi(200, apiData, paginationHeader());
 
-    return mountWrapper();
+    return createWrapper({});
   });
 
   afterEach(() => {
@@ -105,6 +105,16 @@ describe('Clusters', () => {
         expect(findEmptyState().exists()).toBe(true);
       });
     });
+
+    describe('when is loaded as a child component', () => {
+      beforeEach(() => {
+        createWrapper({ limit: 6 });
+      });
+
+      it("shouldn't render pagination buttons", () => {
+        expect(findPaginatedButtons().exists()).toBe(false);
+      });
+    });
   });
 
   describe('cluster icon', () => {
@@ -248,7 +258,7 @@ describe('Clusters', () => {
 
     beforeEach(() => {
       mockPollingApi(200, apiData, paginationHeader(totalFirstPage, perPage, 1));
-      return mountWrapper();
+      return createWrapper({});
     });
 
     it('should load to page 1 with header values', () => {

spec/frontend/clusters_list/components/clusters_view_all_spec.js

+import { GlCard, GlLoadingIcon, GlButton, GlSprintf, GlBadge } from '@gitlab/ui';
+import { createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { shallowMountExtended } from 'helpers/vue_test_utils_helper';
+import ClustersViewAll from '~/clusters_list/components/clusters_view_all.vue';
+import Agents from '~/clusters_list/components/agents.vue';
+import Clusters from '~/clusters_list/components/clusters.vue';
+import { createMockDirective, getBinding } from 'helpers/vue_mock_directive';
+import {
+  AGENT,
+  CERTIFICATE_BASED,
+  AGENT_CARD_INFO,
+  CERTIFICATE_BASED_CARD_INFO,
+  MAX_CLUSTERS_LIST,
+  INSTALL_AGENT_MODAL_ID,
+} from '~/clusters_list/constants';
+import { sprintf } from '~/locale';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const addClusterPath = '/path/to/add/cluster';
+const defaultBranchName = 'default-branch';
+
+describe('ClustersViewAllComponent', () => {
+  let wrapper;
+
+  const event = {
+    preventDefault: jest.fn(),
+  };
+
+  const propsData = {
+    defaultBranchName,
+  };
+
+  const provideData = {
+    addClusterPath,
+  };
+
+  const entryData = {
+    loadingClusters: false,
+    totalClusters: 0,
+  };
+
+  const findCards = () => wrapper.findAllComponents(GlCard);
+  const findLoadingIcon = () => wrapper.findComponent(GlLoadingIcon);
+  const findAgentsComponent = () => wrapper.findComponent(Agents);
+  const findClustersComponent = () => wrapper.findComponent(Clusters);
+  const findCardsContainer = () => wrapper.findByTestId('clusters-cards-container');
+  const findAgentCardTitle = () => wrapper.findByTestId('agent-card-title');
+  const findRecommendedBadge = () => wrapper.findComponent(GlBadge);
+  const findClustersCardTitle = () => wrapper.findByTestId('clusters-card-title');
+  const findFooterButton = (line) => findCards().at(line).findComponent(GlButton);
+
+  const createStore = (initialState) =>
+    new Vuex.Store({
+      state: initialState,
+    });
+
+  const createWrapper = ({ initialState }) => {
+    wrapper = shallowMountExtended(ClustersViewAll, {
+      localVue,
+      store: createStore(initialState),
+      propsData,
+      provide: provideData,
+      directives: {
+        GlModalDirective: createMockDirective(),
+      },
+      stubs: { GlCard, GlSprintf },
+    });
+  };
+
+  beforeEach(() => {
+    createWrapper({ initialState: entryData });
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('when agents and clusters are not loaded', () => {
+    const initialState = {
+      loadingClusters: true,
+      totalClusters: 0,
+    };
+    beforeEach(() => {
+      createWrapper({ initialState });
+    });
+
+    it('should show the loading icon', () => {
+      expect(findLoadingIcon().exists()).toBe(true);
+    });
+  });
+
+  describe('when both agents and clusters are loaded', () => {
+    beforeEach(() => {
+      findAgentsComponent().vm.$emit('onAgentsLoad', 6);
+    });
+
+    it("shouldn't show the loading icon", () => {
+      expect(findLoadingIcon().exists()).toBe(false);
+    });
+
+    it('should make content visible', () => {
+      expect(findCardsContainer().isVisible()).toBe(true);
+    });
+
+    it('should render 2 cards', () => {
+      expect(findCards().length).toBe(2);
+    });
+  });
+
+  describe('agents card', () => {
+    it('should show recommended badge', () => {
+      expect(findRecommendedBadge().exists()).toBe(true);
+    });
+
+    it('should render Agents component', () => {
+      expect(findAgentsComponent().exists()).toBe(true);
+    });
+
+    it('should pass the limit prop', () => {
+      expect(findAgentsComponent().props('limit')).toBe(MAX_CLUSTERS_LIST);
+    });
+
+    it('should pass the default-branch-name prop', () => {
+      expect(findAgentsComponent().props('defaultBranchName')).toBe(defaultBranchName);
+    });
+
+    describe('when there are no agents', () => {
+      it('should show the empty title', () => {
+        expect(findAgentCardTitle().text()).toBe(AGENT_CARD_INFO.emptyTitle);
+      });
+
+      it('should show install new Agent button in the footer', () => {
+        expect(findFooterButton(0).exists()).toBe(true);
+      });
+
+      it('should render correct modal id for the agent link', () => {
+        const binding = getBinding(findFooterButton(0).element, 'gl-modal-directive');
+
+        expect(binding.value).toBe(INSTALL_AGENT_MODAL_ID);
+      });
+    });
+
+    describe('when the agents are present', () => {
+      const findFooterLink = () => wrapper.findByTestId('agents-tab-footer-link');
+      const agentsNumber = 7;
+
+      beforeEach(() => {
+        findAgentsComponent().vm.$emit('onAgentsLoad', agentsNumber);
+      });
+
+      it('should show the correct title', () => {
+        expect(findAgentCardTitle().text()).toBe(
+          sprintf(AGENT_CARD_INFO.title, { number: MAX_CLUSTERS_LIST, total: agentsNumber }),
+        );
+      });
+
+      it('should show the link to the Agents tab in the footer', () => {
+        expect(findFooterLink().exists()).toBe(true);
+        expect(findFooterLink().text()).toBe(
+          sprintf(AGENT_CARD_INFO.footerText, { number: agentsNumber }),
+        );
+        expect(findFooterLink().attributes('href')).toBe(`?tab=${AGENT}`);
+      });
+
+      describe('when clicking on the footer link', () => {
+        beforeEach(() => {
+          findFooterLink().vm.$emit('click', event);
+        });
+
+        it('should trigger tab change', () => {
+          expect(wrapper.emitted('changeTab')).toEqual([[AGENT]]);
+        });
+      });
+    });
+  });
+
+  describe('clusters tab', () => {
+    it('should pass the limit prop', () => {
+      expect(findClustersComponent().props('limit')).toBe(MAX_CLUSTERS_LIST);
+    });
+
+    it('should pass the is-child-component prop', () => {
+      expect(findClustersComponent().props('isChildComponent')).toBe(true);
+    });
+
+    describe('when there are no clusters', () => {
+      it('should show the empty title', () => {
+        expect(findClustersCardTitle().text()).toBe(CERTIFICATE_BASED_CARD_INFO.emptyTitle);
+      });
+
+      it('should show install new Agent button in the footer', () => {
+        expect(findFooterButton(1).exists()).toBe(true);
+      });
+
+      it('should render correct href for the button in the footer', () => {
+        expect(findFooterButton(1).attributes('href')).toBe(addClusterPath);
+      });
+    });
+
+    describe('when the clusters are present', () => {
+      const findFooterLink = () => wrapper.findByTestId('clusters-tab-footer-link');
+
+      const clustersNumber = 7;
+      const initialState = {
+        loadingClusters: false,
+        totalClusters: clustersNumber,
+      };
+
+      beforeEach(() => {
+        createWrapper({ initialState });
+      });
+
+      it('should show the correct title', () => {
+        expect(findClustersCardTitle().text()).toBe(
+          sprintf(CERTIFICATE_BASED_CARD_INFO.title, {
+            number: MAX_CLUSTERS_LIST,
+            total: clustersNumber,
+          }),
+        );
+      });
+
+      it('should show the link to the Clusters tab in the footer', () => {
+        expect(findFooterLink().exists()).toBe(true);
+        expect(findFooterLink().text()).toBe(
+          sprintf(CERTIFICATE_BASED_CARD_INFO.footerText, { number: clustersNumber }),
+        );
+      });
+
+      describe('when clicking on the footer link', () => {
+        beforeEach(() => {
+          findFooterLink().vm.$emit('click', event);
+        });
+
+        it('should trigger tab change', () => {
+          expect(wrapper.emitted('changeTab')).toEqual([[CERTIFICATE_BASED]]);
+        });
+      });
+    });
+  });
+});

spec/frontend/clusters_list/components/install_agent_modal_spec.js

@@ -24,6 +24,7 @@ localVue.use(VueApollo);
 
 const projectPath = 'path/to/project';
 const defaultBranchName = 'default';
+const maxAgents = MAX_LIST_COUNT;
 
 describe('InstallAgentModal', () => {
   let wrapper;
@@ -56,6 +57,7 @@ describe('InstallAgentModal', () => {
 
     const propsData = {
       defaultBranchName,
+      maxAgents,
     };
 
     wrapper = shallowMount(InstallAgentModal, {

spec/frontend/clusters_list/mocks/apollo.js

@@ -16,6 +16,7 @@ const pageInfo = {
   hasPreviousPage: false,
   startCursor: '',
 };
+const count = 1;
 
 export const createAgentResponse = {
   data: {
@@ -64,7 +65,7 @@ export const createAgentTokenErrorResponse = {
 export const getAgentResponse = {
   data: {
     project: {
-      clusterAgents: { nodes: [{ ...agent, tokens }], pageInfo },
+      clusterAgents: { nodes: [{ ...agent, tokens }], pageInfo, count },
       repository: {
         tree: {
           trees: { nodes: [{ ...agent, path: null }], pageInfo },

spec/frontend/clusters_list/store/mutations_spec.js

@@ -57,4 +57,12 @@ describe('Admin statistics panel mutations', () => {
       expect(state.page).toBe(123);
     });
   });
+
+  describe(`${types.SET_CLUSTERS_PER_PAGE}`, () => {
+    it('changes clustersPerPage value', () => {
+      mutations[types.SET_CLUSTERS_PER_PAGE](state, 123);
+
+      expect(state.clustersPerPage).toBe(123);
+    });
+  });
 });