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index.test.js
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index.test.js
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const Kinesis = require('./index')
const helloWorldTextBuffer = new Buffer("Hello World").toString('base64')
const helloWorldJSONBuffer = new Buffer(JSON.stringify({"msg": "Hello World"})).toString('base64')
const jsonRecords = [{
"kinesis": {
"data": helloWorldJSONBuffer,
}
}]
const textRecords = [
{ "not-a-kinesis-record": "bar" },
{ "kinesis": { "data": helloWorldTextBuffer } }
]
const mixedRecords = [
{ "kinesis": { "data": helloWorldTextBuffer } },
{ "kinesis": { "data": helloWorldJSONBuffer } }
]
describe('#filter', () => {
it('Returns only kinesis records', () => {
const results = textRecords.filter(Kinesis.filter)
expect(results.length).toEqual(1)
})
})
describe('#decode', () => {
it('Decodes base64 messages', () => {
const results = textRecords.filter(Kinesis.filter).map((record) => Kinesis.decode(record.kinesis))
expect(results[0]).toEqual({"data": "Hello World"})
})
})
describe('#parse', () => {
it('Parses and filters records in one pass', () => {
const results = Kinesis.parse(textRecords)
expect(results.length).toEqual(1)
expect(results[0]).toEqual({"data": "Hello World"})
})
it('Returns mixed types from a kinesis record', () => {
const results = Kinesis.parse(mixedRecords)
expect(results.length).toEqual(2)
expect(results[0]).toEqual({"data": "Hello World"})
expect(results[1]).toEqual({"data": "{\"msg\":\"Hello World\"}"})
})
})
describe('#parseJSON', () => {
it('Parses JSON', () => {
const results = Kinesis.parseJSON(jsonRecords)
expect(results[0]).toEqual({"data": {"msg": "Hello World"}})
})
it("Filters out records that can't be parsed to JSON", () => {
const results = Kinesis.parseJSON(mixedRecords)
expect(results.length).toEqual(1)
expect(results[0]).toEqual({"data": {"msg": "Hello World"}})
})
})