Add hosts switcher links test

ui/test/hosts/utils/hostsSwitcherLinks.test.ts

@@ -0,0 +1,82 @@
+import {
+  loadHostsLinks,
+  updateActiveHostLink,
+} from 'src/hosts/utils/hostsSwitcherLinks'
+import {source} from 'test/resources'
+import {HostNames} from 'src/types/hosts'
+
+describe('hosts.utils.hostsSwitcherLinks', () => {
+  describe('loadHostLinks', () => {
+    const socure = {...source, id: '897'}
+
+    const hostNames: HostNames = {
+      'zelda.local': {
+        name: 'zelda.local',
+      },
+      'gannon.local': {
+        name: 'gannon.local',
+      },
+    }
+
+    const getHostsAJAX = async () => hostNames
+
+    it('can load host links for a given source', async () => {
+      const actualLinks = await loadHostsLinks(socure, getHostsAJAX)
+
+      const expectedLinks = {
+        links: [
+          {
+            key: 'zelda.local',
+            text: 'zelda.local',
+            to: '/sources/897/hosts/zelda.local',
+          },
+          {
+            key: 'gannon.local',
+            text: 'gannon.local',
+            to: '/sources/897/hosts/gannon.local',
+          },
+        ],
+        active: null,
+      }
+
+      expect(actualLinks).toEqual(expectedLinks)
+    })
+  })
+
+  describe('updateActiveHostLink', () => {
+    const link1 = {
+      key: 'korok.local',
+      text: 'korok.local',
+      to: '/sources/897/hosts/korok.local',
+    }
+
+    const link2 = {
+      key: 'deku.local',
+      text: 'deku.local',
+      to: '/sources/897/hosts/deku.local',
+    }
+
+    const activeLink = {
+      key: 'robbie.local',
+      text: 'robbie.local',
+      to: '/sources/897/hosts/robbie.local',
+    }
+
+    const activeHostName = {
+      name: 'robbie.local',
+    }
+
+    const links = [link1, activeLink, link2]
+
+    it('can set the active host link', () => {
+      const loadedLinks = {
+        links,
+        active: null,
+      }
+      const actualLinks = updateActiveHostLink(loadedLinks, activeHostName)
+      const expectedLinks = {links, active: activeLink}
+
+      expect(actualLinks).toEqual(expectedLinks)
+    })
+  })
+})