flat-postprocessing/tests/csv-test.ts at main · githubocto/flat-postprocessing

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import { assertArrayIncludes } from "https://deno.land/std@0.92.0/testing/asserts.ts"

import { readCSV, writeCSV } from '../src/csv.ts'

const csvReadPath = './examples/csv/prices.csv'

const csvWritePath = './examples/csv/names.csv'

Deno.test("reads a csv file", async () => {

const csv = await readCSV(csvReadPath)

assertArrayIncludes(csv, [{ Name: "One", Amount: "500", Price: "$0.5" }]);

})

Deno.test("reads a csv file without header", async () => {

const csv = await readCSV(csvReadPath, {

skipFirstRow: true

})

assertArrayIncludes(csv, [{ Name: "Two", Amount: "13", Price: "$10" }]);

})

Deno.test("writes a csv file", async () => {

const data = [

{

age: 70,

{

age: 14,

}

]

await writeCSV(csvWritePath, data)

const csv = await readCSV(csvWritePath)

assertArrayIncludes(csv, [{ age: "70", name: "Rick" }]);

})

Deno.test("appends to a csv file", async () => {

const data = [

{

age: 70,

{

age: 14,

}

]

await writeCSV(csvWritePath, data)

const data2 = [

{

age: 42,

}

]

await writeCSV(csvWritePath, data2, { append: true })

const csv = await readCSV(csvWritePath)

assertArrayIncludes(csv, [{ age: "70", name: "Rick" }])

assertArrayIncludes(csv, [{ age: "42", name: "Jodi" }])

})

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