1 files changed, 32 insertions, 0 deletions
diff --git a/spec/javascripts/vue_shared/components/expand_button_spec.js b/spec/javascripts/vue_shared/components/expand_button_spec.js
new file mode 100644
index 00000000000..a33ab689dd1
--- /dev/null
+++ b/spec/javascripts/vue_shared/components/expand_button_spec.js
@@ -0,0 +1,32 @@
+import Vue from 'vue';
+import expandButton from '~/vue_shared/components/expand_button.vue';
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+describe('expand button', () => {
+  let vm;
+
+  beforeEach(() => {
+    const Component = Vue.extend(expandButton);
+    vm = mountComponent(Component, {
+      slots: {
+        expanded: '<p>Expanded!</p>',
+      },
+    });
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  it('renders a collpased button', () => {
+    expect(vm.$el.textContent.trim()).toEqual('...');
+  });
+
+  it('hides expander on click', (done) => {
+    vm.$el.querySelector('button').click();
+    vm.$nextTick(() => {
+      expect(vm.$el.querySelector('button').getAttribute('style')).toEqual('display: none;');
+      done();
+    });
+  });
+});