diff options
Diffstat (limited to 'deps/npm/node_modules/is-callable/test.js')
-rw-r--r-- | deps/npm/node_modules/is-callable/test.js | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/deps/npm/node_modules/is-callable/test.js b/deps/npm/node_modules/is-callable/test.js new file mode 100644 index 0000000000..f5be51d82e --- /dev/null +++ b/deps/npm/node_modules/is-callable/test.js @@ -0,0 +1,158 @@ +'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(); +}); |