99 lines
3.1 KiB
TypeScript
99 lines
3.1 KiB
TypeScript
import { describe, expect, test } from '@jest/globals'
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import { MetricsRenderer } from '../src/prometheus'
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import { Metric } from '../src/metrics'
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describe('Render prometheus metrics', () => {
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const renderer = new MetricsRenderer('prefix')
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test('Renders simple metric', () => {
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expect(renderer.render([new Metric('metric', 0.000001)])).toEqual(
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`# TYPE prefix_metric gauge
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prefix_metric 0.000001
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`,
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)
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})
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test('Renders simple metric with timestamp', () => {
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expect(renderer.render([new Metric('metric', 0.000001, new Date('2000-01-01 00:00:00 UTC'))])).toEqual(
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`# TYPE prefix_metric gauge
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prefix_metric 0.000001 946684800000
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`,
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)
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})
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test('Renders simple metric with labels', () => {
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expect(
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renderer.render([
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new Metric('metric', 0.000001, new Date('2000-01-01 00:00:00 UTC'), { label: 'Some Label' }),
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]),
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).toEqual(
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`# TYPE prefix_metric gauge
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prefix_metric{label="Some Label"} 0.000001 946684800000
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`,
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)
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})
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test('Renders total as counter', () => {
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for (const metricName of ['some_total_metric', 'some_metric_total', 'total_some_metric']) {
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expect(
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renderer.render([
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new Metric(metricName, 42, new Date('2000-01-01 00:00:00 UTC'), { label: 'Some Label' }),
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]),
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).toEqual(
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`# TYPE prefix_some_metric_total counter
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prefix_some_metric_total{label="Some Label"} 42 946684800000
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`,
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)
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}
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})
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test('Renders multiple metrics correctly', () => {
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expect(
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renderer.render([
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new Metric('some_gauge', 10, new Date('2000-01-01 00:00:00 UTC')),
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new Metric('another_gauge', 30, new Date('2000-01-01 00:00:00 UTC')),
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new Metric('some_gauge', 20, new Date('2000-01-01 00:00:00 UTC')),
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]),
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).toEqual(
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`# TYPE prefix_some_gauge gauge
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prefix_some_gauge 10 946684800000
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prefix_some_gauge 20 946684800000
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# TYPE prefix_another_gauge gauge
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prefix_another_gauge 30 946684800000
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`,
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)
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})
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test('Sanitizes metric names', () => {
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expect(renderer.render([new Metric('mätric name', 0)])).toEqual(
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`# TYPE prefix_m_tric_name gauge
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prefix_m_tric_name 0
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`,
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)
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})
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test('Sanitizes label names', () => {
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expect(renderer.render([new Metric('metric', 0, null, { 'yet another label': 'foo' })])).toEqual(
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`# TYPE prefix_metric gauge
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prefix_metric{yet_another_label="foo"} 0
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`,
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)
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})
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test('Escapes newlines in attribute value', () => {
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expect(renderer.render([new Metric('metric', 0, null, { label: 'foo\nbar' })])).toEqual(
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`# TYPE prefix_metric gauge
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prefix_metric{label="foo\\nbar"} 0
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`,
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)
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})
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test('Escapes quotes in attribute value', () => {
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expect(renderer.render([new Metric('metric', 0, null, { label: 'foo"bar' })])).toEqual(
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`# TYPE prefix_metric gauge
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prefix_metric{label="foo\\"bar"} 0
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`,
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)
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})
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})
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