46 lines
No EOL
1.2 KiB
JavaScript
46 lines
No EOL
1.2 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const invertObject = '../invertObject' |> require(%);
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const objectValues = target => (key => target[key]) |> (target |> Object.keys(%)).map(%);
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'invertObject' |> describe(%, () => {
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'should return an empty object for an empty input' |> it(%, () => {
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({}) |> ({} |> invertObject(%) |> expect(%)).toEqual(%);
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});
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'should invert key-values' |> it(%, () => {
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({
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3: 'a',
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4: 'b'
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}) |> ({
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a: '3',
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b: '4'
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} |> invertObject(%) |> expect(%)).toEqual(%);
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});
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'should take the last value when there are duplications in vals' |> it(%, () => {
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({
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4: 'b',
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3: 'c'
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}) |> ({
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a: '3',
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b: '4',
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c: '3'
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} |> invertObject(%) |> expect(%)).toEqual(%);
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});
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'should preserve the original order' |> it(%, () => {
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['3', '4'] |> ({
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a: '3',
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b: '4',
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c: '3'
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} |> invertObject(%) |> Object.keys(%) |> expect(%)).toEqual(%);
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['c', 'b'] |> ({
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a: '3',
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b: '4',
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c: '3'
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} |> invertObject(%) |> objectValues(%) |> expect(%)).toEqual(%);
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});
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}); |