It resolves #3
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abdennour
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12 changed files with 8667 additions and 173 deletions
304
test/coreSpec.js
304
test/coreSpec.js
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@ -1,179 +1,179 @@
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import expect from 'expect';
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import sinon from 'sinon';
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import {
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isJsons,
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isArrays,
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jsonsHeaders,
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jsons2arrays,
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arrays2csv,
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jsons2csv,
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string2csv,
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toCSV,
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buildURI
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isJsons,
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isArrays,
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jsonsHeaders,
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jsons2arrays,
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arrays2csv,
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jsons2csv,
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string2csv,
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toCSV,
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buildURI
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} from '../src/core';
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describe(`core::isJsons`, () => {
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it(`returns true if all items of array are literal objects`, () => {
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const target = [{}, {}, {}, {}];
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expect(isJsons(target)).toBeTruthy();
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});
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it(`returns false if one of array items is not literal object`, () => {
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let target = ["", {}, {}, {}];
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expect(isJsons(target)).toBeFalsy();
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target = [{},
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[], {}, {}
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];
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expect(isJsons(target)).toBeFalsy();
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});
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it(`returns true if all items of array are literal objects`, () => {
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const target = [{}, {}, {}, {}];
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expect(isJsons(target)).toBeTruthy();
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});
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it(`returns false if one of array items is not literal object`, () => {
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let target = ["", {}, {}, {}];
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expect(isJsons(target)).toBeFalsy();
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target = [{},
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[], {}, {}
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];
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expect(isJsons(target)).toBeFalsy();
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});
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});
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describe(`core::isArrays`, () => {
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it(`retruns true if all array items are arrays too`, () => {
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const target = [
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[],
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[],
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[],
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[]
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];
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expect(isArrays(target)).toBeTruthy();
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});
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it(`retruns false if one of array items is not array`, () => {
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let target = [{},
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[],
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[],
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[]
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];
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expect(isArrays(target)).toBeFalsy();
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target = [
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[], new Set([]), [],
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[]
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];
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expect(isArrays(target)).toBeFalsy();
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target = [
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[], '[]', [],
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[]
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];
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expect(isArrays(target)).toBeFalsy();
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});
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it(`retruns true if all array items are arrays too`, () => {
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const target = [
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[],
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[],
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[],
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[]
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];
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expect(isArrays(target)).toBeTruthy();
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});
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it(`retruns false if one of array items is not array`, () => {
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let target = [{},
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[],
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[],
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[]
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];
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expect(isArrays(target)).toBeFalsy();
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target = [
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[], new Set([]), [],
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[]
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];
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expect(isArrays(target)).toBeFalsy();
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target = [
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[], '[]', [],
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[]
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];
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expect(isArrays(target)).toBeFalsy();
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});
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});
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describe(`core::jsonsHeaders`, () => {
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let fixtures;
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beforeEach(() => {
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fixtures = [{
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maths: 90,
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phy: 80
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}, {
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maths: 50,
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sport: 97,
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ch: 66
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}, {
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ch: 77,
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sport: 99
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}]
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});
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let fixtures;
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beforeEach(() => {
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fixtures = [{
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maths: 90,
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phy: 80
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}, {
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maths: 50,
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sport: 97,
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ch: 66
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}, {
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ch: 77,
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sport: 99
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}]
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});
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it(`returns union of keys of all array items `, () => {
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let actual = jsonsHeaders(fixtures);
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expect(actual).toEqual([`maths`, `phy`, 'sport', 'ch'])
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}),
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it(`returns union of keys of all array items `, () => {
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let actual = jsonsHeaders(fixtures);
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expect(actual).toEqual([`maths`, `phy`, 'sport', 'ch'])
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}),
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it(`does not duplicate keys on the array`, () => {
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let actual = jsonsHeaders(fixtures);
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let keysOfAllItems = fixtures.map((object) => Object.keys(object))
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.reduce((a, b) => [...a, ...b], []);
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expect(actual.length).toBeLessThanOrEqualTo(keysOfAllItems.length);
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expect(actual.length).toEqual(new Set(keysOfAllItems).size);
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it(`does not duplicate keys on the array`, () => {
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let actual = jsonsHeaders(fixtures);
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let keysOfAllItems = fixtures.map((object) => Object.keys(object))
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.reduce((a, b) => [...a, ...b], []);
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expect(actual.length).toBeLessThanOrEqualTo(keysOfAllItems.length);
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expect(actual.length).toEqual(new Set(keysOfAllItems).size);
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})
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})
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});
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describe(`core::jsons2arrays`, () => {
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let fixtures;
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beforeEach(() => {
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fixtures = [{
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maths: '90'
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}, {
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sport: '97'
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}, {
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maths: '77',
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sport: '99'
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}]
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});
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it(`converts an Array of literal objects to Array of arrays`, () => {
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const actual = jsons2arrays(fixtures);
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const expected = [
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['maths', 'sport'],
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['90', ''],
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['', '97'],
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['77', '99']
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];
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expect(actual).toEqual(expected);
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});
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let fixtures;
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beforeEach(() => {
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fixtures = [{
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maths: '90'
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}, {
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sport: '97'
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}, {
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maths: '77',
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sport: '99'
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}]
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});
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it(`converts an Array of literal objects to Array of arrays`, () => {
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const actual = jsons2arrays(fixtures);
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const expected = [
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['maths', 'sport'],
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['90', ''],
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['', '97'],
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['77', '99']
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];
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expect(actual).toEqual(expected);
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});
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it(`converts to Array of arrays following the order of headers`, () => {
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const actual = jsons2arrays(fixtures, ['sport', 'maths']);
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const expected = [
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['maths', 'sport'].reverse(), ['90', ''].reverse(), ['', '97'].reverse(), ['77', '99'].reverse()
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];
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expect(actual).toEqual(expected);
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});
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it(`accepts any size of headers list`, () => {
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const headers = ['maths', 'sport', 'phy', 'ch'];
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const actual = jsons2arrays(fixtures, headers);
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const expected = [
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headers, ['90', '', '', ''],
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['', '97', '', ''],
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['77', '99', '', '']
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];
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expect(actual).toEqual(expected);
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});
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it(`converts to Array of arrays following the order of headers`, () => {
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const actual = jsons2arrays(fixtures, ['sport', 'maths']);
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const expected = [
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['maths', 'sport'].reverse(), ['90', ''].reverse(), ['', '97'].reverse(), ['77', '99'].reverse()
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];
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expect(actual).toEqual(expected);
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});
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it(`accepts any size of headers list`, () => {
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const headers = ['maths', 'sport', 'phy', 'ch'];
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const actual = jsons2arrays(fixtures, headers);
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const expected = [
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headers, ['90', '', '', ''],
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['', '97', '', ''],
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['77', '99', '', '']
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];
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expect(actual).toEqual(expected);
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});
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});
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describe(`core::arrays2csv`, () => {
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let fixtures;
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beforeEach(() => {
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fixtures = [
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[`a`, `b`],
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[`c`, `d`]
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];
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let fixtures;
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beforeEach(() => {
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fixtures = [
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[`a`, `b`],
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[`c`, `d`]
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];
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});
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it(`converts Array of arrays to string in CSV format`, () => {
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const actual = arrays2csv(fixtures);
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expect(actual).toBeA('string');
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expect(actual.split(`\n`).join(`|`)).toEqual(`a,b|c,d`);
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});
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});
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it(`converts Array of arrays to string in CSV format`, () => {
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const actual = arrays2csv(fixtures);
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expect(actual).toBeA('string');
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expect(actual.split(`\n`).join(`|`)).toEqual(`a,b|c,d`);
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});
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it(`renders CSV headers whenever it was given `, () => {
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const headers = [`X`, `Y`];
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const firstLineOfCSV = arrays2csv(fixtures, headers).split(`\n`)[0];
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expect(firstLineOfCSV).toEqual(headers.join(`,`));
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});
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it(`renders CSV headers whenever it was given `, () => {
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const headers = [`X`, `Y`];
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const firstLineOfCSV = arrays2csv(fixtures, headers).split(`\n`)[0];
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expect(firstLineOfCSV).toEqual(headers.join(`,`));
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});
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});
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describe(`core::jsons2csv`, () => {
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let fixtures;
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beforeEach(() => {
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fixtures = [{
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X: '88',
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Y: '97'
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}, {
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X: '77',
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Y: '99'
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}]
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});
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let fixtures;
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beforeEach(() => {
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fixtures = [{
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X: '88',
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Y: '97'
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}, {
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X: '77',
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Y: '99'
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}]
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});
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it(`converts Array of literal objects to string in CSV format including headers`, () => {
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it(`converts Array of literal objects to string in CSV format including headers`, () => {
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const actual = jsons2csv(fixtures);
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const expectedHeaders = ['X', 'Y'];
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const expected =`${expectedHeaders.join(`,`)}|88,97|77,99`;
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const actual = jsons2csv(fixtures);
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const expectedHeaders = ['X', 'Y'];
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const expected = `${expectedHeaders.join(`,`)}|88,97|77,99`;
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expect(actual).toBeA('string');
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expect(actual.split(`\n`).join(`|`)).toEqual(expected);
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});
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@ -229,7 +229,7 @@ describe(`core::toCSV`, () =>{
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describe(`core::buildURI`, () =>{
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let fixtures;
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beforeEach(() => {
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fixtures = {string:'Xy', arrays:[[],[]],jsons:[{}, {}]};
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fixtures = {string:'Xy', arrays:[['a', 'b'],['c', 'd']],jsons:[{}, {}]};
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});
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it(`generates URI to download data in CSV format`,() => {
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@ -239,4 +239,22 @@ describe(`core::buildURI`, () =>{
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expect(buildURI(fixtures.string).startsWith(prefixCsvURI)).toBeTruthy();
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});
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it(`generates CSV string according to "separator"`, () => {
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const prefixCsvURI= `data:text/csv;charset=utf-8,`;
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const expectedSepartorCount = fixtures.arrays.map(row => row.length -1).reduce((total, next) =>total + next, 0);
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let separator = ';';
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let fullURI = buildURI(fixtures.arrays,null , separator);
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expect(
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fullURI.slice(prefixCsvURI.length).match(/;/g).length
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).toEqual(expectedSepartorCount);
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separator = ',';
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fullURI = buildURI(fixtures.arrays,null , separator);
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expect(
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fullURI.slice(prefixCsvURI.length).match(/,/g).length
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).toEqual(expectedSepartorCount);
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});
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});
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