| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| import { mainMetric } from '../../src'; |
| |
| describe('mainMetric', () => { |
| it('is null when no options', () => { |
| expect(mainMetric([])).toBeUndefined(); |
| expect(mainMetric(null)).toBeUndefined(); |
| }); |
| it('prefers the "count" metric when first', () => { |
| const metrics = [{ metric_name: 'count' }, { metric_name: 'foo' }]; |
| expect(mainMetric(metrics)).toBe('count'); |
| }); |
| it('prefers the "count" metric when not first', () => { |
| const metrics = [{ metric_name: 'foo' }, { metric_name: 'count' }]; |
| expect(mainMetric(metrics)).toBe('count'); |
| }); |
| it('selects the first metric when "count" is not an option', () => { |
| const metrics = [{ metric_name: 'foo' }, { metric_name: 'not_count' }]; |
| expect(mainMetric(metrics)).toBe('foo'); |
| }); |
| }); |