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metamask-extension/ui/app/hooks/tests/useTokenData.test.js

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import assert from 'assert';
import { ethers } from 'ethers';
import { renderHook } from '@testing-library/react-hooks';
import { useTokenData } from '../useTokenData';
import { TRANSACTION_CATEGORIES } from '../../../../shared/constants/transaction';
const tests = [
{
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data:
'0xa9059cbb000000000000000000000000ffe5bc4e8f1f969934d773fa67da095d2e491a970000000000000000000000000000000000000000000000000000000000003a98',
tokenData: {
name: TRANSACTION_CATEGORIES.TOKEN_METHOD_TRANSFER,
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args: [
'0xffe5bc4e8f1f969934d773fa67da095d2e491a97',
ethers.BigNumber.from(15000),
],
},
},
{
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data:
'0xa9059cbb000000000000000000000000ffe5bc4e8f1f969934d773fa67da095d2e491a9700000000000000000000000000000000000000000000000000000000000061a8',
tokenData: {
name: TRANSACTION_CATEGORIES.TOKEN_METHOD_TRANSFER,
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args: [
'0xffe5bc4e8f1f969934d773fa67da095d2e491a97',
ethers.BigNumber.from(25000),
],
},
},
{
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data:
'0xa9059cbb000000000000000000000000ffe5bc4e8f1f969934d773fa67da095d2e491a970000000000000000000000000000000000000000000000000000000000002710',
tokenData: {
name: TRANSACTION_CATEGORIES.TOKEN_METHOD_TRANSFER,
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args: [
'0xffe5bc4e8f1f969934d773fa67da095d2e491a97',
ethers.BigNumber.from(10000),
],
},
},
{
data: undefined,
tokenData: null,
},
];
describe('useTokenData', function () {
tests.forEach((test) => {
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const testTitle =
test.tokenData === null
? `should return null when no data provided`
: `should return properly decoded data with _value ${test.tokenData.args[1].value}`;
it(testTitle, function () {
const { result } = renderHook(() => useTokenData(test.data));
if (test.tokenData) {
assert.strictEqual(result.current.name, test.tokenData.name);
assert.strictEqual(
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result.current.args[0].toLowerCase(),
test.tokenData.args[0],
);
assert.ok(test.tokenData.args[1].eq(result.current.args[1]));
} else {
assert.strictEqual(result.current, test.tokenData);
}
});
});
});