fingerprintjs

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import { getBrowserVersion, isSafari } from '../../tests/utils'
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import getHardwareConcurrency from './hardware_concurrency'
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describe('Sources', () => {
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  describe('hardwareConcurrency', () => {
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    it('handles browser native value', () => {
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      const result = getHardwareConcurrency()
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      const version = getBrowserVersion() ?? { major: 0, minor: 0 }
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      // In Safari the navigator.hardwareConcurrency is behind a build option,
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      // on BrowserStack it seems available starting with version 15.4.
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      if (isSafari() && (version.major < 15 || (version.major === 15 && version.minor < 4))) {
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        expect(result).toBe(undefined)
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        return
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      }
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      expect(result).toBeGreaterThan(0)
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    })
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    it('returns a stable value', () => {
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      const first = getHardwareConcurrency()
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      const second = getHardwareConcurrency()
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      expect(second).toBe(first)
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    })
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  })
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})
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