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nodejs/node_modules/is-nan/test/index.js

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+'use strict';
+
+var numberIsNaN = require('../');
+var test = require('tape');
+
+test('as a function', function (t) {
+	require('./tests')(numberIsNaN, t);
+
+	t.end();
+});

nodejs/node_modules/is-nan/test/shimmed.js

@@ -0,0 +1,28 @@
+'use strict';
+
+require('es5-shim');
+
+var numberIsNaN = require('../');
+numberIsNaN.shim();
+
+var test = require('tape');
+var defineProperties = require('define-properties');
+var isEnumerable = Object.prototype.propertyIsEnumerable;
+var functionsHaveNames = function f() {}.name === 'f';
+
+test('shimmed', function (t) {
+	t.equal(Number.isNaN.length, 1, 'Number.isNaN has a length of 1');
+	t.test('Function name', { skip: !functionsHaveNames }, function (st) {
+		st.equal(Number.isNaN.name, 'isNaN', 'Number.isNaN has name "isNaN"');
+		st.end();
+	});
+
+	t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
+		et.equal(false, isEnumerable.call(Number, 'isNaN'), 'Number.isNaN is not enumerable');
+		et.end();
+	});
+
+	require('./tests')(Number.isNaN, t);
+
+	t.end();
+});

nodejs/node_modules/is-nan/test/tests.js

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+'use strict';
+
+module.exports = function (numberIsNaN, t) {
+	t.test('not NaN', function (st) {
+		st.test('primitives', function (sst) {
+			sst.notOk(numberIsNaN(), 'undefined is not NaN');
+			sst.notOk(numberIsNaN(null), 'null is not NaN');
+			sst.notOk(numberIsNaN(false), 'false is not NaN');
+			sst.notOk(numberIsNaN(true), 'true is not NaN');
+			sst.notOk(numberIsNaN(0), 'positive zero is not NaN');
+			sst.notOk(numberIsNaN(Infinity), 'Infinity is not NaN');
+			sst.notOk(numberIsNaN(-Infinity), '-Infinity is not NaN');
+			sst.notOk(numberIsNaN('foo'), 'string is not NaN');
+			sst.notOk(numberIsNaN('NaN'), 'string NaN is not NaN');
+			sst.end();
+		});
+
+		st.notOk(numberIsNaN([]), 'array is not NaN');
+		st.notOk(numberIsNaN({}), 'object is not NaN');
+		st.notOk(numberIsNaN(function () {}), 'function is not NaN');
+
+		st.test('valueOf', function (vt) {
+			var obj = { valueOf: function () { return NaN; } };
+			vt.ok(numberIsNaN(Number(obj)), 'object with valueOf of NaN, converted to Number, is NaN');
+			vt.notOk(numberIsNaN(obj), 'object with valueOf of NaN is not NaN');
+			vt.end();
+		});
+
+		st.end();
+	});
+
+	t.test('NaN literal', function (st) {
+		st.ok(numberIsNaN(NaN), 'NaN is NaN');
+		st.end();
+	});
+};