Files
Tim van der Lippe bc3a0b7a2b Upgrade eslint-plugin-import
R=jacktfranklin@chromium.org

Bug: none
Change-Id: I0ad7ba9133af3db19c448a284d79bdfc08101dea
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3268294
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
2021-11-08 16:05:33 +00:00

49 lines
1.6 KiB
JavaScript

'use strict';
var test = require('tape');
var isBoolean = require('../');
var hasToStringTag = require('has-tostringtag/shams')();
test('not Booleans', function (t) {
t.test('primitives', function (st) {
st.notOk(isBoolean(), 'undefined is not Boolean');
st.notOk(isBoolean(null), 'null is not Boolean');
st.notOk(isBoolean(0), '0 is not Boolean');
st.notOk(isBoolean(NaN), 'NaN is not Boolean');
st.notOk(isBoolean(Infinity), 'Infinity is not Boolean');
st.notOk(isBoolean('foo'), 'string is not Boolean');
st.end();
});
t.test('objects', function (st) {
st.notOk(isBoolean(Object(42)), 'number object is not Boolean');
st.notOk(isBoolean([]), 'array is not Boolean');
st.notOk(isBoolean({}), 'object is not Boolean');
st.notOk(isBoolean(function () {}), 'function is not Boolean');
st.notOk(isBoolean(/a/g), 'regex literal is not Boolean');
st.notOk(isBoolean(new RegExp('a', 'g')), 'regex object is not Boolean');
st.notOk(isBoolean(new Date()), 'new Date() is not Boolean');
st.end();
});
t.end();
});
test('@@toStringTag', { skip: !hasToStringTag }, function (t) {
var fakeBoolean = {
toString: function () { return 'true'; },
valueOf: function () { return true; }
};
fakeBoolean[Symbol.toStringTag] = 'Boolean';
t.notOk(isBoolean(fakeBoolean), 'fake Boolean with @@toStringTag "Boolean" is not Boolean');
t.end();
});
test('Booleans', function (t) {
t.ok(isBoolean(true), 'true is Boolean');
t.ok(isBoolean(false), 'false is Boolean');
t.ok(isBoolean(Object(true)), 'Object(true) is Boolean');
t.ok(isBoolean(Object(false)), 'Object(false) is Boolean');
t.end();
});