1 files changed, 31 insertions, 0 deletions
diff --git a/spec/javascripts/diffs/components/inline_diff_expansion_row_spec.js b/spec/javascripts/diffs/components/inline_diff_expansion_row_spec.js
new file mode 100644
index 00000000000..290b3d7c803
--- /dev/null
+++ b/spec/javascripts/diffs/components/inline_diff_expansion_row_spec.js
@@ -0,0 +1,31 @@
+import Vue from 'vue';
+import { createStore } from '~/mr_notes/stores';
+import InlineDiffExpansionRow from '~/diffs/components/inline_diff_expansion_row.vue';
+import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
+import diffFileMockData from '../mock_data/diff_file';
+
+describe('InlineDiffExpansionRow', () => {
+  const matchLine = diffFileMockData.highlighted_diff_lines[5];
+
+  const createComponent = (options = {}) => {
+    const cmp = Vue.extend(InlineDiffExpansionRow);
+    const defaults = {
+      fileHash: diffFileMockData.file_hash,
+      contextLinesPath: 'contextLinesPath',
+      line: matchLine,
+      isTop: false,
+      isBottom: false,
+    };
+    const props = Object.assign({}, defaults, options);
+
+    return createComponentWithStore(cmp, createStore(), props).$mount();
+  };
+
+  describe('template', () => {
+    it('should render expansion row for match lines', () => {
+      const vm = createComponent();
+
+      expect(vm.$el.classList.contains('line_expansion')).toBe(true);
+    });
+  });
+});