diff options
Diffstat (limited to 'spec/javascripts/lib/utils/number_utility_spec.js')
-rw-r--r-- | spec/javascripts/lib/utils/number_utility_spec.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/spec/javascripts/lib/utils/number_utility_spec.js b/spec/javascripts/lib/utils/number_utility_spec.js new file mode 100644 index 00000000000..5fde8be9123 --- /dev/null +++ b/spec/javascripts/lib/utils/number_utility_spec.js @@ -0,0 +1,41 @@ +import { formatRelevantDigits } from '~/lib/utils/number_utils'; + +describe('Number Utils', () => { + describe('formatRelevantDigits', () => { + it('returns an empty string when the number is NaN', () => { + expect(formatRelevantDigits('fail')).toBe(''); + }); + + it('returns 4 decimals when there is 4 plus digits to the left', () => { + const formattedNumber = formatRelevantDigits('1000.1234567'); + const rightFromDecimal = formattedNumber.split('.')[1]; + const leftFromDecimal = formattedNumber.split('.')[0]; + expect(rightFromDecimal.length).toBe(4); + expect(leftFromDecimal.length).toBe(4); + }); + + it('returns 3 decimals when there is 1 digit to the left', () => { + const formattedNumber = formatRelevantDigits('0.1234567'); + const rightFromDecimal = formattedNumber.split('.')[1]; + const leftFromDecimal = formattedNumber.split('.')[0]; + expect(rightFromDecimal.length).toBe(3); + expect(leftFromDecimal.length).toBe(1); + }); + + it('returns 2 decimals when there is 2 digits to the left', () => { + const formattedNumber = formatRelevantDigits('10.1234567'); + const rightFromDecimal = formattedNumber.split('.')[1]; + const leftFromDecimal = formattedNumber.split('.')[0]; + expect(rightFromDecimal.length).toBe(2); + expect(leftFromDecimal.length).toBe(2); + }); + + it('returns 1 decimal when there is 3 digits to the left', () => { + const formattedNumber = formatRelevantDigits('100.1234567'); + const rightFromDecimal = formattedNumber.split('.')[1]; + const leftFromDecimal = formattedNumber.split('.')[0]; + expect(rightFromDecimal.length).toBe(1); + expect(leftFromDecimal.length).toBe(3); + }); + }); +}); |