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import * as operations from 'shared/operations';
describe('operations', () => {
describe('#valueOf', () => {
it('returns an Operation', () => {
const op: operations.Operation = operations.valueOf({
type: operations.SCROLL_VERTICALLY,
count: 10,
});
expect(op.type).to.equal(operations.SCROLL_VERTICALLY);
expect(op.count).to.equal(10);
});
it('throws an Error on missing required parameter', () => {
expect(() => operations.valueOf({
type: operations.SCROLL_VERTICALLY,
})).to.throw(TypeError);
});
it('fills default valus of optional parameter', () => {
const op: operations.Operation = operations.valueOf({
type: operations.COMMAND_SHOW_OPEN,
});
expect(op.type).to.equal(operations.COMMAND_SHOW_OPEN)
expect(op.alter).to.be.false;
});
it('throws an Error on mismatch of parameter', () => {
expect(() => operations.valueOf({
type: operations.SCROLL_VERTICALLY,
count: '10',
})).to.throw(TypeError);
expect(() => valueOf({
type: operations.COMMAND_SHOW_OPEN,
alter: 'true',
})).to.throw(TypeError);
});
});
})
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