var test = require('tape')
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var isFunction = require('./index.js')
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test('isFunction', function (t) {
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t.ok(!isFunction(), 'undefined is not a function')
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t.ok(!isFunction(null), 'null is not a function')
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t.ok(!isFunction(''), 'string is not a function')
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t.ok(!isFunction(/a/), 'regex is not a function')
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t.ok(!isFunction(true), 'true is not a function')
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t.ok(!isFunction(false), 'false is not a function')
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t.ok(!isFunction(NaN), 'NaN is not a function')
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t.ok(!isFunction(42), '42 is not a function')
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t.ok(isFunction(function () {}), 'function is a function')
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t.ok(isFunction(setTimeout), 'setTimeout is a function')
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t.end()
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})
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if (typeof window !== 'undefined') {
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test('browser quirks', function (t) {
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t.plan(2)
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t.ok(isFunction(window.alert), 'alert is a function')
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window.testRegExpFromIframe = function (regexp) {
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t.ok(!isFunction(regexp))
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}
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var iframe = document.createElement('iframe')
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document.body.appendChild(iframe)
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iframe.contentWindow.document.write([
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"<html><body><script type=\"text/javascript\">",
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"parent.testRegExpFromIframe(/a/)",
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"</script></body></html>"
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].join("\n"));
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})
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}
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