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diff --git a/spec/frontend/ci_variable_list/components/ci_variable_modal_spec.js b/spec/frontend/ci_variable_list/components/ci_variable_modal_spec.js
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index 00000000000..be2c017cc7e
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+++ b/spec/frontend/ci_variable_list/components/ci_variable_modal_spec.js
@@ -0,0 +1,93 @@
+import Vuex from 'vuex';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import { GlModal } from '@gitlab/ui';
+import CiVariableModal from '~/ci_variable_list/components/ci_variable_modal.vue';
+import createStore from '~/ci_variable_list/store';
+import mockData from '../services/mock_data';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('Ci variable modal', () => {
+  let wrapper;
+  let store;
+
+  const createComponent = () => {
+    store = createStore();
+    wrapper = shallowMount(CiVariableModal, {
+      localVue,
+      store,
+    });
+  };
+
+  const findModal = () => wrapper.find(GlModal);
+
+  beforeEach(() => {
+    createComponent();
+    jest.spyOn(store, 'dispatch').mockImplementation();
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('button is disabled when no key/value pair are present', () => {
+    expect(findModal().props('actionPrimary').attributes.disabled).toBeTruthy();
+  });
+
+  it('masked checkbox is disabled when value does not meet regex requirements', () => {
+    expect(wrapper.find({ ref: 'masked-ci-variable' }).attributes('disabled')).toBeTruthy();
+  });
+
+  describe('Adding a new variable', () => {
+    beforeEach(() => {
+      const [variable] = mockData.mockVariables;
+      store.state.variable = variable;
+    });
+
+    it('button is enabled when key/value pair are present', () => {
+      expect(findModal().props('actionPrimary').attributes.disabled).toBeFalsy();
+    });
+
+    it('masked checkbox is enabled when value meets regex requirements', () => {
+      store.state.maskableRegex = '^[a-zA-Z0-9_+=/@:-]{8,}$';
+      return wrapper.vm.$nextTick(() => {
+        expect(wrapper.find({ ref: 'masked-ci-variable' }).attributes('disabled')).toBeFalsy();
+      });
+    });
+
+    it('Add variable button dispatches addVariable action', () => {
+      findModal().vm.$emit('ok');
+      expect(store.dispatch).toHaveBeenCalledWith('addVariable');
+    });
+
+    it('Clears the modal state once modal is hidden', () => {
+      findModal().vm.$emit('hidden');
+      expect(store.dispatch).toHaveBeenCalledWith('clearModal');
+    });
+  });
+
+  describe('Editing a variable', () => {
+    beforeEach(() => {
+      const [variable] = mockData.mockVariables;
+      store.state.variableBeingEdited = variable;
+    });
+
+    it('button text is Update variable when updating', () => {
+      expect(wrapper.vm.modalActionText).toBe('Update Variable');
+    });
+
+    it('Update variable button dispatches updateVariable with correct variable', () => {
+      findModal().vm.$emit('ok');
+      expect(store.dispatch).toHaveBeenCalledWith(
+        'updateVariable',
+        store.state.variableBeingEdited,
+      );
+    });
+
+    it('Resets the editing state once modal is hidden', () => {
+      findModal().vm.$emit('hidden');
+      expect(store.dispatch).toHaveBeenCalledWith('resetEditing');
+    });
+  });
+});