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test.js
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'use strict'
const test = require('tape')
const metric = require('.')
test('summary metric', function (t) {
const summary1 = metric.summary('test1', { unit: 'count' })
t.is(summary1.stats.min, Number.POSITIVE_INFINITY)
t.is(summary1.stats.max, Number.NEGATIVE_INFINITY)
t.is(summary1.stats.count, 0)
t.is(summary1.stats.sum, 0)
summary1.record(2)
summary1.record(4)
t.is(summary1.stats.min, 2)
t.is(summary1.stats.max, 4)
t.is(summary1.stats.count, 2)
t.is(summary1.stats.sum, 6)
const summary2 = metric.summary('test2', { unit: 'count' })
summary2.record(5)
summary1.accumulate(summary2.stats)
t.is(summary1.stats.min, 2)
t.is(summary1.stats.max, 5)
t.is(summary1.stats.count, 3)
t.is(summary1.stats.sum, 11)
summary1.reset()
t.is(summary1.stats.min, Number.POSITIVE_INFINITY)
t.is(summary1.stats.max, Number.NEGATIVE_INFINITY)
t.is(summary1.stats.count, 0)
t.is(summary1.stats.sum, 0)
t.end()
})