1 files changed, 75 insertions, 0 deletions
diff --git a/spec/frontend/blob/csv/csv_viewer_spec.js b/spec/frontend/blob/csv/csv_viewer_spec.js
new file mode 100644
index 00000000000..abb914b8f57
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+++ b/spec/frontend/blob/csv/csv_viewer_spec.js
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+import { GlAlert, GlLoadingIcon, GlTable } from '@gitlab/ui';
+import { getAllByRole } from '@testing-library/dom';
+import { shallowMount, mount } from '@vue/test-utils';
+import { nextTick } from 'vue';
+import CSVViewer from '~/blob/csv/csv_viewer.vue';
+
+const validCsv = 'one,two,three';
+const brokenCsv = '{\n "json": 1,\n "key": [1, 2, 3]\n}';
+
+describe('app/assets/javascripts/blob/csv/csv_viewer.vue', () => {
+  let wrapper;
+
+  const createComponent = ({ csv = validCsv, mountFunction = shallowMount } = {}) => {
+    wrapper = mountFunction(CSVViewer, {
+      propsData: {
+        csv,
+      },
+    });
+  };
+
+  const findCsvTable = () => wrapper.findComponent(GlTable);
+  const findLoadingIcon = () => wrapper.findComponent(GlLoadingIcon);
+  const findAlert = () => wrapper.findComponent(GlAlert);
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('should render loading spinner', () => {
+    createComponent();
+
+    expect(findLoadingIcon().props()).toMatchObject({
+      size: 'lg',
+    });
+  });
+
+  describe('when the CSV contains errors', () => {
+    it('should render alert', async () => {
+      createComponent({ csv: brokenCsv });
+      await nextTick;
+
+      expect(findAlert().props()).toMatchObject({
+        variant: 'danger',
+      });
+    });
+  });
+
+  describe('when the CSV contains no errors', () => {
+    it('should not render alert', async () => {
+      createComponent();
+      await nextTick;
+
+      expect(findAlert().exists()).toBe(false);
+    });
+
+    it('renders the CSV table with the correct attributes', async () => {
+      createComponent();
+      await nextTick;
+
+      expect(findCsvTable().attributes()).toMatchObject({
+        'empty-text': 'No CSV data to display.',
+        items: validCsv,
+      });
+    });
+
+    it('renders the CSV table with the correct content', async () => {
+      createComponent({ mountFunction: mount });
+      await nextTick;
+
+      expect(getAllByRole(wrapper.element, 'row', { name: /One/i })).toHaveLength(1);
+      expect(getAllByRole(wrapper.element, 'row', { name: /Two/i })).toHaveLength(1);
+      expect(getAllByRole(wrapper.element, 'row', { name: /Three/i })).toHaveLength(1);
+    });
+  });
+});