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import { EmittableMetric, Metric, MetricValueTag, ResultMetric, Unit, isIMetric, isMetricValue } from '../lib/index';
describe('trace/metric', () => {
beforeEach(() => {
jest.useFakeTimers();
jest.setSystemTime(new Date('2020-01-01T00:00:00.000Z'));
});
afterEach(() => {
jest.useRealTimers();
});
test('EmittableMetric.withValue creates MetricValue', () => {
const m = new EmittableMetric('x', Unit.COUNT);
const v = m.withValue(2.5);
expect(isMetricValue(v)).toBe(true);
expect(v).toEqual({
_tag: MetricValueTag,
name: 'x',
unit: Unit.COUNT,
value: 2.5,
emissionTimestamp: 1577836800000,
});
});
test('Metric.join/fromName/child set names and parents', () => {
expect(Metric.join('a', 'b', 'c')).toBe('a.b.c');
const root = Metric.fromName('root');
expect(isIMetric(root)).toBe(true);
expect(root.count.name).toBe('root.count');
expect(root.time.name).toBe('root.time');
expect(root.parent).toBeUndefined();
const child = root.child('leaf');
expect(child.name).toBe('root.leaf');
expect(child.parent).toBe(root);
});
test('ResultMetric.from creates failure/success/warn children', () => {
const metric = Metric.fromName('work');
const result = ResultMetric.from(metric);
expect(result.name).toBe('work');
expect(result.failure.name).toBe('work.failure');
expect(result.success.name).toBe('work.success');
expect(result.warn.name).toBe('work.warn');
expect(result.failure.parent!.name).toBe('work');
expect(result.success.parent!.name).toBe('work');
expect(result.warn.parent!.name).toBe('work');
});
});
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