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1 change: 1 addition & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

### Chore & Maintenance

* `[jest-jasemine2]` Add dependency on jest-each ([#6308](https://github.com/facebook/jest/pull/#6308))
* `[jest-each]` Move jest-each into core Jest ([#6278](https://github.com/facebook/jest/pull/6278))

### Fixes
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ exports[`shows error message when not enough arguments are supplied to tests 1`]

Missing 1 arguments

at packages/jest-jasmine2/build/each.js:84:17
at packages/jest-each/build/bind.js:81:17
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it would be good to point to user code here, but that can be fixed later


"
`;
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6 changes: 5 additions & 1 deletion packages/jest-each/package.json
Original file line number Diff line number Diff line change
Expand Up @@ -14,5 +14,9 @@
"each"
],
"author": "Matt Phillips (mattphillips)",
"license": "MIT"
"license": "MIT",
"dependencies": {
"chalk": "^2.0.1",
"pretty-format": "^23.0.0"
}
}
88 changes: 88 additions & 0 deletions packages/jest-each/src/bind.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,88 @@
/**
* Copyright (c) 2018-present, Facebook, Inc. All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/

import util from 'util';
import chalk from 'chalk';
import pretty from 'pretty-format';

type Table = Array<Array<any>>;

const EXPECTED_COLOR = chalk.green;
const RECEIVED_COLOR = chalk.red;

export default (cb: Function) => (...args: any) => (
title: string,
test: Function,
): void => {
if (args.length === 1) {
const table: Table = args[0];
return table.forEach(row =>
cb(util.format(title, ...row), applyRestParams(row, test)),
);
}

const templateStrings = args[0];
const data = args.slice(1);

const keys = getHeadingKeys(templateStrings[0]);
const table = buildTable(data, keys.length, keys);

if (data.length % keys.length !== 0) {
return cb(title, () => {
throw new Error(
'Not enough arguments supplied for given headings:\n' +
EXPECTED_COLOR(keys.join(' | ')) +
'\n\n' +
'Received:\n' +
RECEIVED_COLOR(pretty(data)) +
'\n\n' +
`Missing ${RECEIVED_COLOR(`${data.length % keys.length}`)} arguments`,
);
});
}

return table.forEach(row =>
cb(interpolate(title, row), applyObjectParams(row, test)),
);
};

const applyRestParams = (params: Array<any>, test: Function) => {
if (params.length < test.length) return done => test(...params, done);

return () => test(...params);
};

const getHeadingKeys = (headings: string): Array<string> =>
headings.replace(/\s/g, '').split('|');

const buildTable = (
data: Array<any>,
rowSize: number,
keys: Array<string>,
): Array<any> =>
Array.from({length: data.length / rowSize})
.map((_, index) => data.slice(index * rowSize, index * rowSize + rowSize))
.map(row =>
row.reduce(
(acc, value, index) => Object.assign({}, acc, {[keys[index]]: value}),
{},
),
);

const interpolate = (title: string, data: any) =>
Object.keys(data).reduce(
(acc, key) => acc.replace('$' + key, data[key]),
title,
);

const applyObjectParams = (obj: any, test: Function) => {
if (test.length > 1) return done => test(obj, done);

return () => test(obj);
};
3 changes: 3 additions & 0 deletions packages/jest-each/src/index.js
Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
import bind from './bind';
import arrayEach from './array';
import templateEach from './template';

Expand All @@ -17,4 +18,6 @@ each.withGlobal = g => (...args) => {
return arrayEach(g)(...args);
};

export {bind};

export default each;
1 change: 1 addition & 0 deletions packages/jest-jasmine2/package.json
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
"expect": "^23.0.0",
"is-generator-fn": "^1.0.0",
"jest-diff": "^23.0.0",
"jest-each": "^23.0.0",
"jest-matcher-utils": "^23.0.0",
"jest-message-util": "^23.0.0",
"jest-snapshot": "^23.0.0",
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80 changes: 1 addition & 79 deletions packages/jest-jasmine2/src/each.js
Original file line number Diff line number Diff line change
Expand Up @@ -9,14 +9,7 @@

import type {Environment} from 'types/Environment';

import util from 'util';
import chalk from 'chalk';
import pretty from 'pretty-format';

type Table = Array<Array<any>>;

const EXPECTED_COLOR = chalk.green;
const RECEIVED_COLOR = chalk.red;
import {bind as bindEach} from 'jest-each';

export default (environment: Environment): void => {
environment.global.it.each = bindEach(environment.global.it);
Expand All @@ -26,74 +19,3 @@ export default (environment: Environment): void => {
environment.global.xdescribe.each = bindEach(environment.global.xdescribe);
environment.global.fdescribe.each = bindEach(environment.global.fdescribe);
};

const bindEach = (cb: Function) => (...args: any) => (
title: string,
test: Function,
): void => {
if (args.length === 1) {
const table: Table = args[0];
return table.forEach(row =>
cb(util.format(title, ...row), applyRestParams(row, test)),
);
}

const templateStrings = args[0];
const data = args.slice(1);

const keys = getHeadingKeys(templateStrings[0]);
const table = buildTable(data, keys.length, keys);

if (data.length % keys.length !== 0) {
return cb(title, () => {
throw new Error(
'Not enough arguments supplied for given headings:\n' +
EXPECTED_COLOR(keys.join(' | ')) +
'\n\n' +
'Received:\n' +
RECEIVED_COLOR(pretty(data)) +
'\n\n' +
`Missing ${RECEIVED_COLOR(`${data.length % keys.length}`)} arguments`,
);
});
}

return table.forEach(row =>
cb(interpolate(title, row), applyObjectParams(row, test)),
);
};

const applyRestParams = (params: Array<any>, test: Function) => {
if (params.length < test.length) return done => test(...params, done);

return () => test(...params);
};

const getHeadingKeys = (headings: string): Array<string> =>
headings.replace(/\s/g, '').split('|');

const buildTable = (
data: Array<any>,
rowSize: number,
keys: Array<string>,
): Array<any> =>
Array.from({length: data.length / rowSize})
.map((_, index) => data.slice(index * rowSize, index * rowSize + rowSize))
.map(row =>
row.reduce(
(acc, value, index) => Object.assign({}, acc, {[keys[index]]: value}),
{},
),
);

const interpolate = (title: string, data: any) =>
Object.keys(data).reduce(
(acc, key) => acc.replace('$' + key, data[key]),
title,
);

const applyObjectParams = (obj: any, test: Function) => {
if (test.length > 1) return done => test(obj, done);

return () => test(obj);
};