1 files changed, 116 insertions, 0 deletions
diff --git a/spec/frontend/feature_flags/components/strategies/flexible_rollout_spec.js b/spec/frontend/feature_flags/components/strategies/flexible_rollout_spec.js
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+++ b/spec/frontend/feature_flags/components/strategies/flexible_rollout_spec.js
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+import { mount } from '@vue/test-utils';
+import { GlFormInput, GlFormSelect } from '@gitlab/ui';
+import FlexibleRollout from '~/feature_flags/components/strategies/flexible_rollout.vue';
+import ParameterFormGroup from '~/feature_flags/components/strategies/parameter_form_group.vue';
+import { PERCENT_ROLLOUT_GROUP_ID } from '~/feature_flags/constants';
+import { flexibleRolloutStrategy } from '../../mock_data';
+
+const DEFAULT_PROPS = {
+  strategy: flexibleRolloutStrategy,
+};
+
+describe('feature_flags/components/strategies/flexible_rollout.vue', () => {
+  let wrapper;
+  let percentageFormGroup;
+  let percentageInput;
+  let stickinessFormGroup;
+  let stickinessSelect;
+
+  const factory = (props = {}) =>
+    mount(FlexibleRollout, { propsData: { ...DEFAULT_PROPS, ...props } });
+
+  afterEach(() => {
+    if (wrapper?.destroy) {
+      wrapper.destroy();
+    }
+
+    wrapper = null;
+  });
+
+  describe('with valid percentage', () => {
+    beforeEach(() => {
+      wrapper = factory();
+
+      percentageFormGroup = wrapper
+        .find('[data-testid="strategy-flexible-rollout-percentage"]')
+        .find(ParameterFormGroup);
+      percentageInput = percentageFormGroup.find(GlFormInput);
+      stickinessFormGroup = wrapper
+        .find('[data-testid="strategy-flexible-rollout-stickiness"]')
+        .find(ParameterFormGroup);
+      stickinessSelect = stickinessFormGroup.find(GlFormSelect);
+    });
+
+    it('displays the current percentage value', () => {
+      expect(percentageInput.element.value).toBe(flexibleRolloutStrategy.parameters.rollout);
+    });
+
+    it('displays the current stickiness value', () => {
+      expect(stickinessSelect.element.value).toBe(flexibleRolloutStrategy.parameters.stickiness);
+    });
+
+    it('emits a change when the percentage value changes', async () => {
+      percentageInput.setValue('75');
+      await wrapper.vm.$nextTick();
+      expect(wrapper.emitted('change')).toEqual([
+        [
+          {
+            parameters: {
+              rollout: '75',
+              groupId: PERCENT_ROLLOUT_GROUP_ID,
+              stickiness: flexibleRolloutStrategy.parameters.stickiness,
+            },
+          },
+        ],
+      ]);
+    });
+
+    it('emits a change when the stickiness value changes', async () => {
+      stickinessSelect.setValue('USERID');
+      await wrapper.vm.$nextTick();
+      expect(wrapper.emitted('change')).toEqual([
+        [
+          {
+            parameters: {
+              rollout: flexibleRolloutStrategy.parameters.rollout,
+              groupId: PERCENT_ROLLOUT_GROUP_ID,
+              stickiness: 'USERID',
+            },
+          },
+        ],
+      ]);
+    });
+
+    it('does not show errors', () => {
+      expect(percentageFormGroup.attributes('state')).toBe('true');
+    });
+  });
+
+  describe('with percentage that is out of range', () => {
+    beforeEach(() => {
+      wrapper = factory({ strategy: { parameters: { rollout: '101' } } });
+    });
+
+    it('shows errors', () => {
+      const formGroup = wrapper
+        .find('[data-testid="strategy-flexible-rollout-percentage"]')
+        .find(ParameterFormGroup);
+
+      expect(formGroup.attributes('state')).toBeUndefined();
+    });
+  });
+
+  describe('with percentage that is not a whole number', () => {
+    beforeEach(() => {
+      wrapper = factory({ strategy: { parameters: { rollout: '3.14' } } });
+    });
+
+    it('shows errors', () => {
+      const formGroup = wrapper
+        .find('[data-testid="strategy-flexible-rollout-percentage"]')
+        .find(ParameterFormGroup);
+
+      expect(formGroup.attributes('state')).toBeUndefined();
+    });
+  });
+});