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diff --git a/spec/frontend/vue_shared/alert_details/sidebar/alert_sidebar_status_spec.js b/spec/frontend/vue_shared/alert_details/sidebar/alert_sidebar_status_spec.js
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index 00000000000..f5b9efb4d98
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+++ b/spec/frontend/vue_shared/alert_details/sidebar/alert_sidebar_status_spec.js
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+import { GlDropdown, GlDropdownItem, GlLoadingIcon } from '@gitlab/ui';
+import { mount } from '@vue/test-utils';
+import updateAlertStatusMutation from '~/graphql_shared/mutations/alert_status_update.mutation.graphql';
+import AlertSidebarStatus from '~/vue_shared/alert_details/components/sidebar/sidebar_status.vue';
+import mockAlerts from '../mocks/alerts.json';
+
+const mockAlert = mockAlerts[0];
+
+describe('Alert Details Sidebar Status', () => {
+  let wrapper;
+  const findStatusDropdown = () => wrapper.find(GlDropdown);
+  const findStatusDropdownItem = () => wrapper.find(GlDropdownItem);
+  const findStatusLoadingIcon = () => wrapper.find(GlLoadingIcon);
+  const findStatusDropdownHeader = () => wrapper.find('[data-testid="dropdown-header"]');
+
+  function mountComponent({ data, sidebarCollapsed = true, loading = false, stubs = {} } = {}) {
+    wrapper = mount(AlertSidebarStatus, {
+      propsData: {
+        alert: { ...mockAlert },
+        ...data,
+        sidebarCollapsed,
+        projectPath: 'projectPath',
+      },
+      mocks: {
+        $apollo: {
+          mutate: jest.fn(),
+          queries: {
+            alert: {
+              loading,
+            },
+          },
+        },
+      },
+      stubs,
+    });
+  }
+
+  afterEach(() => {
+    if (wrapper) {
+      wrapper.destroy();
+    }
+  });
+
+  describe('Alert Sidebar Dropdown Status', () => {
+    beforeEach(() => {
+      mountComponent({
+        data: { alert: mockAlert },
+        sidebarCollapsed: false,
+        loading: false,
+      });
+    });
+
+    it('displays status dropdown', () => {
+      expect(findStatusDropdown().exists()).toBe(true);
+    });
+
+    it('displays the dropdown status header', () => {
+      expect(findStatusDropdownHeader().exists()).toBe(true);
+    });
+
+    describe('updating the alert status', () => {
+      const mockUpdatedMutationResult = {
+        data: {
+          updateAlertStatus: {
+            errors: [],
+            alert: {
+              status: 'acknowledged',
+            },
+          },
+        },
+      };
+
+      beforeEach(() => {
+        mountComponent({
+          data: { alert: mockAlert },
+          sidebarCollapsed: false,
+          loading: false,
+        });
+      });
+
+      it('calls `$apollo.mutate` with `updateAlertStatus` mutation and variables containing `iid`, `status`, & `projectPath`', () => {
+        jest.spyOn(wrapper.vm.$apollo, 'mutate').mockResolvedValue(mockUpdatedMutationResult);
+        findStatusDropdownItem().vm.$emit('click');
+
+        expect(wrapper.vm.$apollo.mutate).toHaveBeenCalledWith({
+          mutation: updateAlertStatusMutation,
+          variables: {
+            iid: '1527542',
+            status: 'TRIGGERED',
+            projectPath: 'projectPath',
+          },
+        });
+      });
+
+      it('stops updating when the request fails', () => {
+        jest.spyOn(wrapper.vm.$apollo, 'mutate').mockReturnValue(Promise.reject(new Error()));
+        findStatusDropdownItem().vm.$emit('click');
+        expect(findStatusLoadingIcon().exists()).toBe(false);
+        expect(wrapper.find('[data-testid="status"]').text()).toBe('Triggered');
+      });
+    });
+  });
+});