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var test = require('tap').test
var once = require('../once.js')
test('once', function (t) {
var f = 0
var foo = once(function (g) {
t.equal(f, 0)
f ++
return f + g + this
})
for (var i = 0; i < 1E3; i++) {
t.same(f, i === 0 ? 0 : 1)
var g = foo.call(1, 1)
t.same(g, i === 0 ? 3 : undefined)
t.same(f, 1)
}
t.end()
})