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import AccessorUtilities from '~/lib/utils/accessor';
describe('AccessorUtilities', () => {
const testError = new Error('test error');
describe('isPropertyAccessSafe', () => {
let base;
it('should return `true` if access is safe', () => {
base = { testProp: 'testProp' };
expect(AccessorUtilities.isPropertyAccessSafe(base, 'testProp')).toBe(true);
});
it('should return `false` if access throws an error', () => {
base = { get testProp() { throw testError; } };
expect(AccessorUtilities.isPropertyAccessSafe(base, 'testProp')).toBe(false);
});
it('should return `false` if property is undefined', () => {
base = {};
expect(AccessorUtilities.isPropertyAccessSafe(base, 'testProp')).toBe(false);
});
});
describe('isFunctionCallSafe', () => {
const base = {};
it('should return `true` if calling is safe', () => {
base.func = () => {};
expect(AccessorUtilities.isFunctionCallSafe(base, 'func')).toBe(true);
});
it('should return `false` if calling throws an error', () => {
base.func = () => { throw new Error('test error'); };
expect(AccessorUtilities.isFunctionCallSafe(base, 'func')).toBe(false);
});
it('should return `false` if function is undefined', () => {
base.func = undefined;
expect(AccessorUtilities.isFunctionCallSafe(base, 'func')).toBe(false);
});
});
describe('isLocalStorageAccessSafe', () => {
beforeEach(() => {
spyOn(window.localStorage, 'setItem');
spyOn(window.localStorage, 'removeItem');
});
it('should return `true` if access is safe', () => {
expect(AccessorUtilities.isLocalStorageAccessSafe()).toBe(true);
});
it('should return `false` if access to .setItem isnt safe', () => {
window.localStorage.setItem.and.callFake(() => { throw testError; });
expect(AccessorUtilities.isLocalStorageAccessSafe()).toBe(false);
});
it('should set a test item if access is safe', () => {
AccessorUtilities.isLocalStorageAccessSafe();
expect(window.localStorage.setItem).toHaveBeenCalledWith('isLocalStorageAccessSafe', 'true');
});
it('should remove the test item if access is safe', () => {
AccessorUtilities.isLocalStorageAccessSafe();
expect(window.localStorage.removeItem).toHaveBeenCalledWith('isLocalStorageAccessSafe');
});
});
});
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