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Adds ability to load key from env variable #10

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Adds ability to load key from env variable #10

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15 changes: 15 additions & 0 deletions src/keySources/env.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
/*
* Copyright (c) 2017 Tom Shawver
*/

'use strict'

module.exports = () => {
return new Promise((resolve, reject) => {
if (process.env.CRYPTEX_ENV_KEY) {
resolve(process.env.CRYPTEX_ENV_KEY)
} else {
reject(new Error('CRYPTEX_ENV_KEY not assigned'))
}
})
}
22 changes: 22 additions & 0 deletions test/src/keySources/env.spec.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
/*
* Copyright (c) 2017 Tom Shawver
*/

'use strict'

const getKey = require('src/keySources/env')

describe('Environment Source', () => {
it('resolves with the provided key', () => {
process.env.CRYPTEX_ENV_KEY = 'bar'

return getKey().then((key) => {
should.exist(key)
key.should.equal('bar')
})
})
it('rejects when option "key" is missing', () => {
delete process.env.CRYPTEX_ENV_KEY
return getKey().should.be.rejected
})
})