describe('Viewer', () => {
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it('should be a class (function)', () => {
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expect(Viewer).to.be.a('function');
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});
|
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it('should throw error when the first argument is not an element', () => {
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expect(() => {
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new Viewer(document);
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}).to.throw('The first argument is required and must be an element.');
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});
|
});
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