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diff --git a/spec/frontend/pipelines/components/pipeline_mini_graph/linked_pipelines_mini_list_spec.js b/spec/frontend/pipelines/components/pipeline_mini_graph/linked_pipelines_mini_list_spec.js
new file mode 100644
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+++ b/spec/frontend/pipelines/components/pipeline_mini_graph/linked_pipelines_mini_list_spec.js
@@ -0,0 +1,176 @@
+import { mount } from '@vue/test-utils';
+import CiIcon from '~/vue_shared/components/ci_icon.vue';
+import { createMockDirective, getBinding } from 'helpers/vue_mock_directive';
+import LinkedPipelinesMiniList from '~/pipelines/components/pipeline_mini_graph/linked_pipelines_mini_list.vue';
+import mockData from './linked_pipelines_mock_data';
+
+describe('Linked pipeline mini list', () => {
+  let wrapper;
+
+  const findCiIcon = () => wrapper.findComponent(CiIcon);
+  const findCiIcons = () => wrapper.findAllComponents(CiIcon);
+  const findLinkedPipelineCounter = () => wrapper.find('[data-testid="linked-pipeline-counter"]');
+  const findLinkedPipelineMiniItem = () =>
+    wrapper.find('[data-testid="linked-pipeline-mini-item"]');
+  const findLinkedPipelineMiniItems = () =>
+    wrapper.findAll('[data-testid="linked-pipeline-mini-item"]');
+  const findLinkedPipelineMiniList = () => wrapper.findComponent(LinkedPipelinesMiniList);
+
+  const createComponent = (props = {}) => {
+    wrapper = mount(LinkedPipelinesMiniList, {
+      directives: {
+        GlTooltip: createMockDirective(),
+      },
+      propsData: {
+        ...props,
+      },
+    });
+  };
+
+  describe('when passed an upstream pipeline as prop', () => {
+    beforeEach(() => {
+      createComponent({
+        triggeredBy: [mockData.triggered_by],
+      });
+    });
+
+    afterEach(() => {
+      wrapper.destroy();
+      wrapper = null;
+    });
+
+    it('should render one linked pipeline item', () => {
+      expect(findLinkedPipelineMiniItem().exists()).toBe(true);
+    });
+
+    it('should render a linked pipeline with the correct href', () => {
+      expect(findLinkedPipelineMiniItem().exists()).toBe(true);
+
+      expect(findLinkedPipelineMiniItem().attributes('href')).toBe(
+        '/gitlab-org/gitlab-foss/-/pipelines/129',
+      );
+    });
+
+    it('should render one ci status icon', () => {
+      expect(findCiIcon().exists()).toBe(true);
+    });
+
+    it('should render a borderless ci-icon', () => {
+      expect(findCiIcon().exists()).toBe(true);
+
+      expect(findCiIcon().props('isBorderless')).toBe(true);
+      expect(findCiIcon().classes('borderless')).toBe(true);
+    });
+
+    it('should render a ci-icon with a custom border class', () => {
+      expect(findCiIcon().exists()).toBe(true);
+
+      expect(findCiIcon().classes('gl-border')).toBe(true);
+    });
+
+    it('should render the correct ci status icon', () => {
+      expect(findCiIcon().classes('ci-status-icon-running')).toBe(true);
+    });
+
+    it('should have an activated tooltip', () => {
+      expect(findLinkedPipelineMiniItem().exists()).toBe(true);
+      const tooltip = getBinding(findLinkedPipelineMiniItem().element, 'gl-tooltip');
+
+      expect(tooltip.value.title).toBe('GitLabCE - running');
+    });
+
+    it('should correctly set is-upstream', () => {
+      expect(findLinkedPipelineMiniList().exists()).toBe(true);
+
+      expect(findLinkedPipelineMiniList().classes('is-upstream')).toBe(true);
+    });
+
+    it('should correctly compute shouldRenderCounter', () => {
+      expect(findLinkedPipelineMiniList().vm.shouldRenderCounter).toBe(false);
+    });
+
+    it('should not render the pipeline counter', () => {
+      expect(findLinkedPipelineCounter().exists()).toBe(false);
+    });
+  });
+
+  describe('when passed downstream pipelines as props', () => {
+    beforeEach(() => {
+      createComponent({
+        triggered: mockData.triggered,
+        pipelinePath: 'my/pipeline/path',
+      });
+    });
+
+    afterEach(() => {
+      wrapper.destroy();
+      wrapper = null;
+    });
+
+    it('should render three linked pipeline items', () => {
+      expect(findLinkedPipelineMiniItems().exists()).toBe(true);
+      expect(findLinkedPipelineMiniItems().length).toBe(3);
+    });
+
+    it('should render three ci status icons', () => {
+      expect(findCiIcons().exists()).toBe(true);
+      expect(findCiIcons().length).toBe(3);
+    });
+
+    it('should render the correct ci status icon', () => {
+      expect(findCiIcon().classes('ci-status-icon-running')).toBe(true);
+    });
+
+    it('should have an activated tooltip', () => {
+      expect(findLinkedPipelineMiniItem().exists()).toBe(true);
+      const tooltip = getBinding(findLinkedPipelineMiniItem().element, 'gl-tooltip');
+
+      expect(tooltip.value.title).toBe('GitLabCE - running');
+    });
+
+    it('should correctly set is-downstream', () => {
+      expect(findLinkedPipelineMiniList().exists()).toBe(true);
+
+      expect(findLinkedPipelineMiniList().classes('is-downstream')).toBe(true);
+    });
+
+    it('should render a borderless ci-icon', () => {
+      expect(findCiIcon().exists()).toBe(true);
+
+      expect(findCiIcon().props('isBorderless')).toBe(true);
+      expect(findCiIcon().classes('borderless')).toBe(true);
+    });
+
+    it('should render a ci-icon with a custom border class', () => {
+      expect(findCiIcon().exists()).toBe(true);
+
+      expect(findCiIcon().classes('gl-border')).toBe(true);
+    });
+
+    it('should render the pipeline counter', () => {
+      expect(findLinkedPipelineCounter().exists()).toBe(true);
+    });
+
+    it('should correctly compute shouldRenderCounter', () => {
+      expect(findLinkedPipelineMiniList().vm.shouldRenderCounter).toBe(true);
+    });
+
+    it('should correctly trim linkedPipelines', () => {
+      expect(findLinkedPipelineMiniList().props('triggered').length).toBe(6);
+      expect(findLinkedPipelineMiniList().vm.linkedPipelinesTrimmed.length).toBe(3);
+    });
+
+    it('should set the correct pipeline path', () => {
+      expect(findLinkedPipelineCounter().exists()).toBe(true);
+
+      expect(findLinkedPipelineCounter().attributes('href')).toBe('my/pipeline/path');
+    });
+
+    it('should render the correct counterTooltipText', () => {
+      expect(findLinkedPipelineCounter().exists()).toBe(true);
+      const tooltip = getBinding(findLinkedPipelineCounter().element, 'gl-tooltip');
+
+      expect(tooltip.value.title).toBe(findLinkedPipelineMiniList().vm.counterTooltipText);
+    });
+  });
+});