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29 lines
803 B
JavaScript
29 lines
803 B
JavaScript
'use strict'
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const test = require('ava')
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const {execSync} = require('child_process')
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function fx(json, code = '') {
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const output = execSync(`echo '${JSON.stringify(json)}' | node index.js ${code}`).toString('utf8')
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return JSON.parse(output)
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}
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test('pass', t => {
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t.deepEqual(fx([{"greeting": "hello world"}]), [{"greeting": "hello world"}])
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})
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test('anon func', t => {
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t.deepEqual(fx({"key": "value"}, "'x => x.key'"), 'value')
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})
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test('this bind', t => {
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t.deepEqual(fx([1, 2, 3, 4, 5], "'this.map(x => x * this.length)'"), [5, 10, 15, 20, 25])
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})
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test('generator', t => {
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t.deepEqual(fx([1, 2, 3, 4, 5], "'for (let i of this) if (i % 2 == 0) yield i'"), [2, 4])
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})
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test('chain', t => {
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t.deepEqual(fx({"items": ["foo", "bar"]}, "'this.items' 'yield* this' 'x => x[1]'"), 'bar')
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})
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