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1 files changed, 83 insertions, 0 deletions

diff --git a/src/node_modules/is-generator-function/test/index.js b/src/node_modules/is-generator-function/test/index.js
new file mode 100644
index 0000000..a7fab25
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+++ b/src/node_modules/is-generator-function/test/index.js
@@ -0,0 +1,83 @@
+'use strict';
+
+/* globals window */
+
+var test = require('tape');
+var isGeneratorFunction = require('../index');
+var generatorFuncs = require('make-generator-function')();
+var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
+
+var forEach = function (arr, func) {
+	var i;
+	for (i = 0; i < arr.length; ++i) {
+		func(arr[i], i, arr);
+	}
+};
+
+test('returns false for non-functions', function (t) {
+	var nonFuncs = [
+		true,
+		false,
+		null,
+		undefined,
+		{},
+		[],
+		/a/g,
+		'string',
+		42,
+		new Date()
+	];
+	t.plan(nonFuncs.length);
+	forEach(nonFuncs, function (nonFunc) {
+		t.notOk(isGeneratorFunction(nonFunc), nonFunc + ' is not a function');
+	});
+	t.end();
+});
+
+test('returns false for non-generator functions', function (t) {
+	var func = function () {};
+	t.notOk(isGeneratorFunction(func), 'anonymous function is not an generator function');
+
+	var namedFunc = function foo() {};
+	t.notOk(isGeneratorFunction(namedFunc), 'named function is not an generator function');
+
+	if (typeof window === 'undefined') {
+		t.skip('window.alert is not an generator function');
+	} else {
+		t.notOk(isGeneratorFunction(window.alert), 'window.alert is not an generator function');
+	}
+	t.end();
+});
+
+var fakeToString = function () { return 'function* () { return "TOTALLY REAL I SWEAR!"; }'; };
+
+test('returns false for non-generator function with faked toString', function (t) {
+	var func = function () {};
+	func.toString = fakeToString;
+
+	t.notEqual(String(func), Function.prototype.toString.apply(func), 'faked toString is not real toString');
+	t.notOk(isGeneratorFunction(func), 'anonymous function with faked toString is not a generator function');
+	t.end();
+});
+
+test('returns false for non-generator function with faked @@toStringTag', { skip: !hasToStringTag || generatorFuncs.length === 0 }, function (t) {
+	var generatorFunc = generatorFuncs[0];
+	var fakeGenFunction = {
+		toString: function () { return String(generatorFunc); },
+		valueOf: function () { return generatorFunc; }
+	};
+	fakeGenFunction[Symbol.toStringTag] = 'GeneratorFunction';
+	t.notOk(isGeneratorFunction(fakeGenFunction), 'fake GeneratorFunction with @@toStringTag "GeneratorFunction" is not a generator function');
+	t.end();
+});
+
+test('returns true for generator functions', function (t) {
+	if (generatorFuncs.length > 0) {
+		forEach(generatorFuncs, function (generatorFunc) {
+			t.ok(isGeneratorFunction(generatorFunc), generatorFunc + ' is generator function');
+		});
+	} else {
+		t.skip('generator function is generator function - this environment does not support ES6 generator functions. Please run `node --harmony`, or use a supporting browser.');
+	}
+	t.end();
+});