Add a New Copy Button That Works in Modals

This copy button manages a local instance of the Clipboard plugin
specific to it, which means it is created/destroyed on the
creation/destruction of the component. This allows it to work well in
gitlab-ui modals, as the event listeners are bound on creation of the
button.

It also allows for bindings to the `container` option of the Clipboard
plugin, which allows it to work within the focus trap set by bootstrap's
modals.

1 files changed, 40 insertions, 0 deletions

diff --git a/spec/frontend/vue_shared/components/modal_copy_button_spec.js b/spec/frontend/vue_shared/components/modal_copy_button_spec.js
new file mode 100644
index 00000000000..f1943861523
--- /dev/null
+++ b/spec/frontend/vue_shared/components/modal_copy_button_spec.js
@@ -0,0 +1,40 @@
+import Vue from 'vue';
+import { shallowMount } from '@vue/test-utils';
+import modalCopyButton from '~/vue_shared/components/modal_copy_button.vue';
+
+describe('modal copy button', () => {
+  const Component = Vue.extend(modalCopyButton);
+  let wrapper;
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  beforeEach(() => {
+    wrapper = shallowMount(Component, {
+      propsData: {
+        text: 'copy me',
+        title: 'Copy this value into Clipboard!',
+      },
+    });
+  });
+
+  describe('clipboard', () => {
+    it('should fire a `success` event on click', () => {
+      document.execCommand = jest.fn(() => true);
+      window.getSelection = jest.fn(() => ({
+        toString: jest.fn(() => 'test'),
+        removeAllRanges: jest.fn(),
+      }));
+      wrapper.trigger('click');
+      expect(wrapper.emitted().success).not.toBeEmpty();
+      expect(document.execCommand).toHaveBeenCalledWith('copy');
+    });
+    it("should propagate the clipboard error event if execCommand doesn't work", () => {
+      document.execCommand = jest.fn(() => false);
+      wrapper.trigger('click');
+      expect(wrapper.emitted().error).not.toBeEmpty();
+      expect(document.execCommand).toHaveBeenCalledWith('copy');
+    });
+  });
+});