1 files changed, 70 insertions, 0 deletions
diff --git a/spec/frontend/vue_merge_request_widget/mr_widget_how_to_merge_modal_spec.js b/spec/frontend/vue_merge_request_widget/mr_widget_how_to_merge_modal_spec.js
new file mode 100644
index 00000000000..295b9df30b9
--- /dev/null
+++ b/spec/frontend/vue_merge_request_widget/mr_widget_how_to_merge_modal_spec.js
@@ -0,0 +1,70 @@
+import { GlModal } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import MrWidgetHowToMergeModal from '~/vue_merge_request_widget/components/mr_widget_how_to_merge_modal.vue';
+
+describe('MRWidgetHowToMerge', () => {
+  let wrapper;
+
+  function mountComponent({ data = {}, props = {} } = {}) {
+    wrapper = shallowMount(MrWidgetHowToMergeModal, {
+      data() {
+        return data;
+      },
+      propsData: props,
+      stubs: {},
+    });
+  }
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  beforeEach(() => {
+    mountComponent();
+  });
+
+  const findModal = () => wrapper.find(GlModal);
+  const findInstructionsFields = () =>
+    wrapper.findAll('[ data-testid="how-to-merge-instructions"]');
+  const findTipLink = () => wrapper.find("[data-testid='docs-tip']");
+
+  it('renders a modal', () => {
+    expect(findModal().exists()).toBe(true);
+  });
+
+  it('renders a selection of markdown fields', () => {
+    expect(findInstructionsFields().length).toBe(3);
+  });
+
+  it('renders a tip including a link to docs when a valid link is present', () => {
+    mountComponent({ props: { reviewingDocsPath: '/gitlab-org/help' } });
+    expect(findTipLink().exists()).toBe(true);
+  });
+
+  it('should not render a tip including a link to docs when a valid link is not present', () => {
+    expect(findTipLink().exists()).toBe(false);
+  });
+
+  it('should render different instructions based on if the user can merge', () => {
+    mountComponent({ props: { canMerge: true } });
+    expect(findInstructionsFields().at(2).text()).toContain('git push origin');
+  });
+
+  it('should render different instructions based on if the merge is based off a fork', () => {
+    mountComponent({ props: { isFork: true } });
+    expect(findInstructionsFields().at(0).text()).toContain('FETCH_HEAD');
+  });
+
+  it('escapes the target branch name shell-secure', () => {
+    mountComponent({ props: { targetBranch: '";echo$IFS"you_shouldnt_run_this' } });
+
+    expect(findInstructionsFields().at(1).text()).toContain('\'";echo$IFS"you_shouldnt_run_this\'');
+  });
+
+  it('escapes the source branch name shell-secure', () => {
+    mountComponent({ props: { sourceBranch: 'branch-of-$USER' } });
+
+    expect(findInstructionsFields().at(0).text()).toContain("'branch-of-$USER'");
+  });
+});