123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158 |
- 'use strict';
- /* eslint no-magic-numbers: 1 */
- var test = require('tape');
- var isCallable = require('./');
- var hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';
- var genFn = require('make-generator-function');
- var arrowFn = require('make-arrow-function')();
- var weirdlyCommentedArrowFn;
- var asyncFn;
- var asyncArrowFn;
- try {
- /* eslint no-new-func: 0 */
- weirdlyCommentedArrowFn = Function('return cl/*/**/=>/**/ass - 1;')();
- asyncFn = Function('return async function foo() {};')();
- asyncArrowFn = Function('return async () => {};')();
- } catch (e) { /**/ }
- var forEach = require('foreach');
- var noop = function () {};
- var classFake = function classFake() { }; // eslint-disable-line func-name-matching
- var returnClass = function () { return ' class '; };
- var return3 = function () { return 3; };
- /* for coverage */
- noop();
- classFake();
- returnClass();
- return3();
- /* end for coverage */
- var invokeFunction = function invokeFunctionString(str) {
- var result;
- try {
- /* eslint-disable no-new-func */
- var fn = Function(str);
- /* eslint-enable no-new-func */
- result = fn();
- } catch (e) {}
- return result;
- };
- var classConstructor = invokeFunction('"use strict"; return class Foo {}');
- var commentedClass = invokeFunction('"use strict"; return class/*kkk*/\n//blah\n Bar\n//blah\n {}');
- var commentedClassOneLine = invokeFunction('"use strict"; return class/**/A{}');
- var classAnonymous = invokeFunction('"use strict"; return class{}');
- var classAnonymousCommentedOneLine = invokeFunction('"use strict"; return class/*/*/{}');
- test('not callables', function (t) {
- t.test('non-number/string primitives', function (st) {
- st.notOk(isCallable(), 'undefined is not callable');
- st.notOk(isCallable(null), 'null is not callable');
- st.notOk(isCallable(false), 'false is not callable');
- st.notOk(isCallable(true), 'true is not callable');
- st.end();
- });
- t.notOk(isCallable([]), 'array is not callable');
- t.notOk(isCallable({}), 'object is not callable');
- t.notOk(isCallable(/a/g), 'regex literal is not callable');
- t.notOk(isCallable(new RegExp('a', 'g')), 'regex object is not callable');
- t.notOk(isCallable(new Date()), 'new Date() is not callable');
- t.test('numbers', function (st) {
- st.notOk(isCallable(42), 'number is not callable');
- st.notOk(isCallable(Object(42)), 'number object is not callable');
- st.notOk(isCallable(NaN), 'NaN is not callable');
- st.notOk(isCallable(Infinity), 'Infinity is not callable');
- st.end();
- });
- t.test('strings', function (st) {
- st.notOk(isCallable('foo'), 'string primitive is not callable');
- st.notOk(isCallable(Object('foo')), 'string object is not callable');
- st.end();
- });
- t.test('non-function with function in its [[Prototype]] chain', function (st) {
- var Foo = function Bar() {};
- Foo.prototype = noop;
- st.equal(true, isCallable(Foo), 'sanity check: Foo is callable');
- st.equal(false, isCallable(new Foo()), 'instance of Foo is not callable');
- st.end();
- });
- t.end();
- });
- test('@@toStringTag', { skip: !hasSymbols || !Symbol.toStringTag }, function (t) {
- var fakeFunction = {
- toString: function () { return String(return3); },
- valueOf: return3
- };
- fakeFunction[Symbol.toStringTag] = 'Function';
- t.equal(String(fakeFunction), String(return3));
- t.equal(Number(fakeFunction), return3());
- t.notOk(isCallable(fakeFunction), 'fake Function with @@toStringTag "Function" is not callable');
- t.end();
- });
- var typedArrayNames = [
- 'Int8Array',
- 'Uint8Array',
- 'Uint8ClampedArray',
- 'Int16Array',
- 'Uint16Array',
- 'Int32Array',
- 'Uint32Array',
- 'Float32Array',
- 'Float64Array'
- ];
- test('Functions', function (t) {
- t.ok(isCallable(noop), 'function is callable');
- t.ok(isCallable(classFake), 'function with name containing "class" is callable');
- t.ok(isCallable(returnClass), 'function with string " class " is callable');
- t.ok(isCallable(isCallable), 'isCallable is callable');
- t.end();
- });
- test('Typed Arrays', function (st) {
- forEach(typedArrayNames, function (typedArray) {
- /* istanbul ignore if : covered in node 0.6 */
- if (typeof global[typedArray] === 'undefined') {
- st.comment('# SKIP typed array "' + typedArray + '" not supported');
- } else {
- st.ok(isCallable(global[typedArray]), typedArray + ' is callable');
- }
- });
- st.end();
- });
- test('Generators', { skip: !genFn }, function (t) {
- t.ok(isCallable(genFn), 'generator function is callable');
- t.end();
- });
- test('Arrow functions', { skip: !arrowFn }, function (t) {
- t.ok(isCallable(arrowFn), 'arrow function is callable');
- t.ok(isCallable(weirdlyCommentedArrowFn), 'weirdly commented arrow functions are callable');
- t.end();
- });
- test('"Class" constructors', { skip: !classConstructor || !commentedClass || !commentedClassOneLine || !classAnonymous }, function (t) {
- t.notOk(isCallable(classConstructor), 'class constructors are not callable');
- t.notOk(isCallable(commentedClass), 'class constructors with comments in the signature are not callable');
- t.notOk(isCallable(commentedClassOneLine), 'one-line class constructors with comments in the signature are not callable');
- t.notOk(isCallable(classAnonymous), 'anonymous class constructors are not callable');
- t.notOk(isCallable(classAnonymousCommentedOneLine), 'anonymous one-line class constructors with comments in the signature are not callable');
- t.end();
- });
- test('`async function`s', { skip: !asyncFn }, function (t) {
- t.ok(isCallable(asyncFn), '`async function`s are callable');
- t.ok(isCallable(asyncArrowFn), '`async` arrow functions are callable');
- t.end();
- });
|