| 1 | 'use strict';
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| 2 |
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| 3 | const { getDocsUrl, isFunction, isTestCase } = require('./util');
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| 4 |
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| 5 | const MESSAGE = 'Jest tests should not return a value.';
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| 6 | const RETURN_STATEMENT = 'ReturnStatement';
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| 7 | const BLOCK_STATEMENT = 'BlockStatement';
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| 8 |
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| 9 | const getBody = args => {
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| 10 | if (
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| 11 | args.length > 1 &&
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| 12 | isFunction(args[1]) &&
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| 13 | args[1].body.type === BLOCK_STATEMENT
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| 14 | ) {
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| 15 | return args[1].body.body;
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| 16 | }
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| 17 | return [];
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| 18 | };
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| 19 |
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| 20 | module.exports = {
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| 21 | meta: {
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| 22 | docs: {
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| 23 | url: getDocsUrl(__filename),
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| 24 | },
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| 25 | },
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| 26 | create(context) {
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| 27 | return {
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| 28 | CallExpression(node) {
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| 29 | if (!isTestCase(node)) return;
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| 30 | const body = getBody(node.arguments);
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| 31 | const returnStmt = body.find(t => t.type === RETURN_STATEMENT);
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| 32 | if (!returnStmt) return;
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| 33 |
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| 34 | context.report({
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| 35 | message: MESSAGE,
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| 36 | node: returnStmt,
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| 37 | });
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| 38 | },
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| 39 | };
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| 40 | },
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| 41 | };
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