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diff --git a/spec/javascripts/ci_variable_list/ci_variable_list_spec.js b/spec/javascripts/ci_variable_list/ci_variable_list_spec.js
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+++ b/spec/javascripts/ci_variable_list/ci_variable_list_spec.js
@@ -0,0 +1,163 @@
+import VariableList from '~/ci_variable_list/ci_variable_list';
+import getSetTimeoutPromise from '../helpers/set_timeout_promise_helper';
+
+describe('VariableList', () => {
+  preloadFixtures('pipeline_schedules/edit.html.raw');
+  preloadFixtures('pipeline_schedules/edit_with_variables.html.raw');
+
+  let $wrapper;
+  let variableList;
+
+  describe('with only key/value inputs', () => {
+    describe('with no variables', () => {
+      beforeEach(() => {
+        loadFixtures('pipeline_schedules/edit.html.raw');
+        $wrapper = $('.js-ci-variable-list-section');
+
+        variableList = new VariableList({
+          container: $wrapper,
+          formField: 'schedule',
+        });
+        variableList.init();
+      });
+
+      it('should remove the row when clicking the remove button', () => {
+        $wrapper.find('.js-row-remove-button').trigger('click');
+
+        expect($wrapper.find('.js-row').length).toBe(0);
+      });
+
+      it('should add another row when editing the last rows key input', () => {
+        const $row = $wrapper.find('.js-row');
+        $row.find('.js-ci-variable-input-key')
+          .val('foo')
+          .trigger('input');
+
+        expect($wrapper.find('.js-row').length).toBe(2);
+
+        // Check for the correct default in the new row
+        const $keyInput = $wrapper.find('.js-row:last-child').find('.js-ci-variable-input-key');
+        expect($keyInput.val()).toBe('');
+      });
+
+      it('should add another row when editing the last rows value textarea', () => {
+        const $row = $wrapper.find('.js-row');
+        $row.find('.js-ci-variable-input-value')
+          .val('foo')
+          .trigger('input');
+
+        expect($wrapper.find('.js-row').length).toBe(2);
+
+        // Check for the correct default in the new row
+        const $valueInput = $wrapper.find('.js-row:last-child').find('.js-ci-variable-input-key');
+        expect($valueInput.val()).toBe('');
+      });
+
+      it('should remove empty row after blurring', () => {
+        const $row = $wrapper.find('.js-row');
+        $row.find('.js-ci-variable-input-key')
+          .val('foo')
+          .trigger('input');
+
+        expect($wrapper.find('.js-row').length).toBe(2);
+
+        $row.find('.js-ci-variable-input-key')
+          .val('')
+          .trigger('input')
+          .trigger('blur');
+
+        expect($wrapper.find('.js-row').length).toBe(1);
+      });
+    });
+
+    describe('with persisted variables', () => {
+      beforeEach(() => {
+        loadFixtures('pipeline_schedules/edit_with_variables.html.raw');
+        $wrapper = $('.js-ci-variable-list-section');
+
+        variableList = new VariableList({
+          container: $wrapper,
+          formField: 'schedule',
+        });
+        variableList.init();
+      });
+
+      it('should have "Reveal values" button initially when there are already variables', () => {
+        expect($wrapper.find('.js-secret-value-reveal-button').text()).toBe('Reveal values');
+      });
+
+      it('should reveal hidden values', () => {
+        const $row = $wrapper.find('.js-row:first-child');
+        const $inputValue = $row.find('.js-ci-variable-input-value');
+        const $placeholder = $row.find('.js-secret-value-placeholder');
+
+        expect($placeholder.hasClass('hide')).toBe(false);
+        expect($inputValue.hasClass('hide')).toBe(true);
+
+        // Reveal values
+        $wrapper.find('.js-secret-value-reveal-button').click();
+
+        expect($placeholder.hasClass('hide')).toBe(true);
+        expect($inputValue.hasClass('hide')).toBe(false);
+      });
+    });
+  });
+
+  describe('with all inputs(key, value, protected)', () => {
+    beforeEach(() => {
+      // This markup will be replaced with a fixture when we can render the
+      // CI/CD settings page with the new dynamic variable list in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/4110
+      $wrapper = $(`<form class="js-variable-list">
+        <ul>
+          <li class="js-row">
+            <div class="ci-variable-body-item">
+              <input class="js-ci-variable-input-key" name="variables[variables_attributes][][key]">
+            </div>
+
+            <div class="ci-variable-body-item">
+              <textarea class="js-ci-variable-input-value" name="variables[variables_attributes][][value]"></textarea>
+            </div>
+
+            <div class="ci-variable-body-item ci-variable-protected-item">
+              <button type="button" class="js-project-feature-toggle project-feature-toggle">
+                <input
+                  type="hidden"
+                  class="js-ci-variable-input-protected js-project-feature-toggle-input"
+                  name="variables[variables_attributes][][protected]"
+                  value="true"
+                />
+              </button>
+            </div>
+
+            <button type="button" class="js-row-remove-button"></button>
+          </li>
+        </ul>
+        <button type="button" class="js-secret-value-reveal-button">
+          Reveal values
+        </button>
+      </form>`);
+
+      variableList = new VariableList({
+        container: $wrapper,
+        formField: 'variables',
+      });
+      variableList.init();
+    });
+
+    it('should add another row when editing the last rows protected checkbox', (done) => {
+      const $row = $wrapper.find('.js-row:last-child');
+      $row.find('.ci-variable-protected-item .js-project-feature-toggle').click();
+
+      getSetTimeoutPromise()
+        .then(() => {
+          expect($wrapper.find('.js-row').length).toBe(2);
+
+          // Check for the correct default in the new row
+          const $protectedInput = $wrapper.find('.js-row:last-child').find('.js-ci-variable-input-protected');
+          expect($protectedInput.val()).toBe('true');
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+});