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metamask-extension/ui/ducks/gas/gas-duck.test.js

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import sinon from 'sinon';
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import GasReducer, { setCustomGasPrice, setCustomGasLimit } from './gas.duck';
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import {
SET_CUSTOM_GAS_PRICE,
SET_CUSTOM_GAS_LIMIT,
} from './gas-action-constants';
describe('Gas Duck', () => {
let tempDateNow;
beforeEach(() => {
tempDateNow = global.Date.now;
global.Date.now = () => 2000000;
});
afterEach(() => {
sinon.restore();
global.Date.now = tempDateNow;
});
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const mockState = {
mockProp: 123,
};
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const initState = {
customData: {
price: null,
limit: null,
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},
};
describe('GasReducer()', () => {
it('should initialize state', () => {
expect(GasReducer(undefined, {})).toStrictEqual(initState);
});
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it('should return state unchanged if it does not match a dispatched actions type', () => {
expect(
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GasReducer(mockState, {
type: 'someOtherAction',
value: 'someValue',
}),
).toStrictEqual(mockState);
});
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it('should set customData.price when receiving a SET_CUSTOM_GAS_PRICE action', () => {
expect(
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GasReducer(mockState, {
type: SET_CUSTOM_GAS_PRICE,
value: 4321,
}),
).toStrictEqual({ customData: { price: 4321 }, ...mockState });
});
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it('should set customData.limit when receiving a SET_CUSTOM_GAS_LIMIT action', () => {
expect(
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GasReducer(mockState, {
type: SET_CUSTOM_GAS_LIMIT,
value: 9876,
}),
).toStrictEqual({ customData: { limit: 9876 }, ...mockState });
});
});
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describe('setCustomGasPrice', () => {
it('should create the correct action', () => {
expect(setCustomGasPrice('mockCustomGasPrice')).toStrictEqual({
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type: SET_CUSTOM_GAS_PRICE,
value: 'mockCustomGasPrice',
});
});
});
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describe('setCustomGasLimit', () => {
it('should create the correct action', () => {
expect(setCustomGasLimit('mockCustomGasLimit')).toStrictEqual({
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type: SET_CUSTOM_GAS_LIMIT,
value: 'mockCustomGasLimit',
});
});
});
});