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feat(data-point/reducer-types): Add the ReducerConstant type (#173)
closes #173
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| const assert = require('assert') | ||
| const mock = require('./entity-request-options.mock') | ||
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| const DataPoint = require('..') | ||
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| const c = DataPoint.helpers.constant | ||
| const dataPoint = DataPoint.create() | ||
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| dataPoint.addEntities({ | ||
| 'request:searchPeople': { | ||
| url: 'https://swapi.co/api/people', | ||
| // options is a "ReducerObject", but | ||
| // values at any level can be wrapped | ||
| // as constants (or just wrap the whole | ||
| // object if all the values are static) | ||
| options: { | ||
| 'content-type': c('application/json'), // constant | ||
| qs: { | ||
| // get path `searchTerm` from input | ||
| // to dataPoint.resolve | ||
| search: '$searchTerm' | ||
| } | ||
| } | ||
| } | ||
| }) | ||
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| // this will mock the remote service | ||
| mock() | ||
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| const input = { | ||
| searchTerm: 'r2' | ||
| } | ||
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| // the second parameter to transform is the input value | ||
| dataPoint.resolve('request:searchPeople', input).then(output => { | ||
| assert.equal(output.results[0].name, 'R2-D2') | ||
| console.dir(output, { colors: true }) | ||
| }) |
19 changes: 19 additions & 0 deletions
19
packages/data-point/examples/entity-request-options.mock.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| const nock = require('nock') | ||
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| module.exports = () => { | ||
| nock('https://swapi.co') | ||
| .get('/api/people') | ||
| .query({ | ||
| search: 'r2' | ||
| }) | ||
| .reply(200, { | ||
| count: 1, | ||
| next: null, | ||
| previous: null, | ||
| results: [ | ||
| { | ||
| name: 'R2-D2' | ||
| } | ||
| ] | ||
| }) | ||
| } |
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33 changes: 33 additions & 0 deletions
33
packages/data-point/lib/reducer-types/reducer-helpers/reducer-constant/factory.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| const REDUCER_CONSTANT = 'ReducerConstant' | ||
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| module.exports.type = REDUCER_CONSTANT | ||
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| const HELPER_NAME = 'constant' | ||
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| module.exports.name = HELPER_NAME | ||
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| /** | ||
| * @class | ||
| * @property {string} type | ||
| * @property {*} value | ||
| */ | ||
| function ReducerConstant () { | ||
| this.type = REDUCER_CONSTANT | ||
| this.value = undefined | ||
| } | ||
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| module.exports.ReducerConstant = ReducerConstant | ||
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| /** | ||
| * @param {Function} createReducer | ||
| * @param {*} value | ||
| * @return {ReducerConstant} | ||
| */ | ||
| function create (createReducer, value) { | ||
| const reducer = new ReducerConstant() | ||
| reducer.value = value | ||
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| return reducer | ||
| } | ||
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| module.exports.create = create |
23 changes: 23 additions & 0 deletions
23
packages/data-point/lib/reducer-types/reducer-helpers/reducer-constant/factory.test.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| /* eslint-env jest */ | ||
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| const Factory = require('./factory') | ||
| const createReducer = require('../../index').create | ||
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| describe('ReducerConstant#factory', () => { | ||
| test('reducer with undefined as value', () => { | ||
| const reducer = Factory.create(createReducer) | ||
| expect(reducer).toBeInstanceOf(Factory.ReducerConstant) | ||
| expect(reducer.type).toBe(Factory.type) | ||
| expect(reducer.value).toBe(undefined) | ||
| }) | ||
| test('reducers with different value types', () => { | ||
| expect(Factory.create(createReducer, null).value).toBe(null) | ||
| expect(Factory.create(createReducer, 100).value).toBe(100) | ||
| expect(Factory.create(createReducer, 'string').value).toBe('string') | ||
| expect(Factory.create(createReducer, ['a', 'b']).value).toEqual(['a', 'b']) | ||
| expect(Factory.create(createReducer, { a: 1, b: 2 }).value).toEqual({ | ||
| a: 1, | ||
| b: 2 | ||
| }) | ||
| }) | ||
| }) |
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