1 files changed, 61 insertions, 0 deletions
diff --git a/spec/frontend/runner/components/runner_type_alert_spec.js b/spec/frontend/runner/components/runner_type_alert_spec.js
new file mode 100644
index 00000000000..5b136a77eeb
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+++ b/spec/frontend/runner/components/runner_type_alert_spec.js
@@ -0,0 +1,61 @@
+import { GlAlert, GlLink } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import RunnerTypeAlert from '~/runner/components/runner_type_alert.vue';
+import { INSTANCE_TYPE, GROUP_TYPE, PROJECT_TYPE } from '~/runner/constants';
+
+describe('RunnerTypeAlert', () => {
+  let wrapper;
+
+  const findAlert = () => wrapper.findComponent(GlAlert);
+  const findLink = () => wrapper.findComponent(GlLink);
+
+  const createComponent = ({ props = {} } = {}) => {
+    wrapper = shallowMount(RunnerTypeAlert, {
+      propsData: {
+        type: INSTANCE_TYPE,
+        ...props,
+      },
+    });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe.each`
+    type             | exampleText                                                           | anchor                 | variant
+    ${INSTANCE_TYPE} | ${'Shared runners are available to every project'}                    | ${'#shared-runners'}   | ${'success'}
+    ${GROUP_TYPE}    | ${'Use Group runners when you want all projects in a group'}          | ${'#group-runners'}    | ${'success'}
+    ${PROJECT_TYPE}  | ${'You can set up a specific runner to be used by multiple projects'} | ${'#specific-runners'} | ${'info'}
+  `('When it is an $type level runner', ({ type, exampleText, anchor, variant }) => {
+    beforeEach(() => {
+      createComponent({ props: { type } });
+    });
+
+    it('Describes runner type', () => {
+      expect(wrapper.text()).toMatch(exampleText);
+    });
+
+    it(`Shows a ${variant} variant`, () => {
+      expect(findAlert().props('variant')).toBe(variant);
+    });
+
+    it(`Links to anchor "${anchor}"`, () => {
+      expect(findLink().attributes('href')).toBe(`/help/ci/runners/runners_scope${anchor}`);
+    });
+  });
+
+  describe('When runner type is not correct', () => {
+    it('Does not render content when type is missing', () => {
+      createComponent({ props: { type: undefined } });
+
+      expect(wrapper.html()).toBe('');
+    });
+
+    it('Validation fails for an incorrect type', () => {
+      expect(() => {
+        createComponent({ props: { type: 'NOT_A_TYPE' } });
+      }).toThrow();
+    });
+  });
+});