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