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Diffstat (limited to 'date-fns/src/closestTo/test.js')
-rw-r--r-- | date-fns/src/closestTo/test.js | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/date-fns/src/closestTo/test.js b/date-fns/src/closestTo/test.js new file mode 100644 index 0000000..1924972 --- /dev/null +++ b/date-fns/src/closestTo/test.js @@ -0,0 +1,112 @@ +// @flow +/* eslint-env mocha */ + +import assert from 'power-assert' +import closestTo from '.' + +describe('closestTo', function() { + it('returns the date from the given array closest to the given date', function() { + var date = new Date(2014, 6 /* Jul */, 2) + var result = closestTo(date, [ + new Date(2015, 7 /* Aug */, 31), + new Date(2012, 6 /* Jul */, 2) + ]) + assert.deepEqual(result, new Date(2015, 7 /* Aug */, 31)) + }) + + it('works if the closest date from the given array is before the given date', function() { + var date = new Date(2014, 6 /* Jul */, 2, 6, 30, 4, 500) + var result = closestTo(date, [ + new Date(2014, 6 /* Jul */, 2, 6, 30, 5, 900), + new Date(2014, 6 /* Jul */, 2, 6, 30, 3, 900), + new Date(2014, 6 /* Jul */, 2, 6, 30, 10) + ]) + assert.deepEqual(result, new Date(2014, 6 /* Jul */, 2, 6, 30, 3, 900)) + }) + + it('accepts timestamps', function() { + var date = new Date(2014, 6 /* Jul */, 2).getTime() + var result = closestTo(date, [ + new Date(2015, 7 /* Aug */, 31).getTime(), + new Date(2012, 6 /* Jul */, 2).getTime() + ]) + assert.deepEqual(result, new Date(2015, 7 /* Aug */, 31)) + }) + + it('returns undefined if the given array is empty', function() { + var date = new Date(2014, 6 /* Jul */, 2).getTime() + var result = closestTo(date, []) + assert(result == null) + }) + + it('returns `Invalid Date` if the given date is `Invalid Date`', function() { + var date = new Date(NaN) + var result = closestTo(date, [ + new Date(2015, 7 /* Aug */, 31), + new Date(2012, 6 /* Jul */, 2) + ]) + assert(result instanceof Date && isNaN(result)) + }) + + it('returns `Invalid Date` if any date in the given array is `Invalid Date`', function() { + var date = new Date(2014, 6 /* Jul */, 2) + var result = closestTo(date, [ + new Date(2015, 7 /* Aug */, 31), + new Date(NaN), + new Date(2012, 6 /* Jul */, 2) + ]) + assert(result instanceof Date && isNaN(result)) + }) + + it('returns `Invalid Date` if any date in the given array is `Invalid Date`', function() { + var date = new Date(2014, 6 /* Jul */, 2) + var result = closestTo(date, [ + new Date(2015, 7 /* Aug */, 31), + new Date(NaN), + new Date(2012, 6 /* Jul */, 2) + ]) + assert(result instanceof Date && isNaN(result)) + }) + + it('returns `Invalid Date` if any value in the given array is undefined', function() { + var date = new Date(2014, 6 /* Jul */, 2) + var result = closestTo(date, [ + new Date(2015, 7 /* Aug */, 31), + // $ExpectedMistake + undefined, + new Date(2012, 6 /* Jul */, 2) + ]) + assert(result instanceof Date && isNaN(result)) + }) + + it('converts Array-like objects into Array', function() { + var date = new Date(2014, 6 /* Jul */, 2) + var object = { + '0': new Date(2015, 7 /* Aug */, 31), + '1': new Date(2012, 6 /* Jul */, 2), + length: 2 + } + // $ExpectedMistake + var result = closestTo(date, object) + assert.deepEqual(result, new Date(2015, 7 /* Aug */, 31)) + }) + + it('converts undefined into empty array', function() { + var date = new Date(2014, 6 /* Jul */, 2).getTime() + // $ExpectedMistake + var result = closestTo(date, undefined) + assert(result == null) + }) + + it('converts null into empty array', function() { + var date = new Date(2014, 6 /* Jul */, 2).getTime() + // $ExpectedMistake + var result = closestTo(date, null) + assert(result == null) + }) + + it('throws TypeError exception if passed less than 2 arguments', function() { + assert.throws(closestTo.bind(null), TypeError) + assert.throws(closestTo.bind(null, 1), TypeError) + }) +}) |