30 lines
590 B
JavaScript
30 lines
590 B
JavaScript
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var assert = require('assert')
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var chain = require('./index')
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console.log('testing...')
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var count = 0;
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chain(
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function(step){ count += step },
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function(step){ count += step },
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function(step){ count += step }
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)(1)
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assert.equal(count, 3, 'should chain calls')
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count = 0;
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chain(
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function(step){ count += step },
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null, undefined,
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function(step){ count += step }
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)(1)
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assert.equal(count, 2, 'should filter out null and undefined arguments')
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var fn = function(){}
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assert.equal(chain(fn, null), fn, 'should return the only function argument')
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console.log('done. tests pass!')
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