74 lines
2.4 KiB
TypeScript
74 lines
2.4 KiB
TypeScript
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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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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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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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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 count
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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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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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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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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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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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