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add mocha to jest transform (by example of jest-codemods). Also add get and forEach methods to collection
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| import * as ts from 'typescript'; | ||
| import { Collection } from './collection'; | ||
| import * as types from './types'; | ||
|
|
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| const api = { | ||
| tscodeshift: (source: string|ts.Node) => { | ||
| if (typeof source === 'string') { | ||
| return Collection.fromSource(source); | ||
| } else { | ||
| return Collection.fromNode(source); | ||
| } | ||
| } | ||
| }; | ||
|
|
||
| /* @internal */ | ||
| export function applyTransforms(path: string, source: string, transforms: types.Transform[]): string { | ||
| const file: types.File = { | ||
| path, | ||
| source | ||
| }; | ||
| return transforms | ||
| .reduce((file, transform) => { | ||
| return { | ||
| path: file.path, | ||
| source: transform(file, api) | ||
| }; | ||
| }, file) | ||
| .source; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| import { stripIndent } from 'common-tags'; | ||
| import { applyTransforms } from '../transform'; | ||
|
|
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| import transform from './jest'; | ||
|
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| test('Convert mocha test to jest test', () => { | ||
| const source = stripIndent` | ||
| before(() => { | ||
| // something | ||
| }); | ||
| suite('Array', function() { | ||
| setup(() => { | ||
| }); | ||
| specify.skip('Array', function(done) { | ||
| done(); | ||
| }); | ||
| }); | ||
| `; | ||
| const expected = stripIndent` | ||
| beforeAll(()=> { | ||
| // something | ||
| }); | ||
| describe('Array', function() { | ||
| beforeEach(()=> { | ||
| }); | ||
| it.skip('Array', function(done) { | ||
| done(); | ||
| }); | ||
| }); | ||
| `; | ||
| const actual = applyTransforms('path.ts', source, [transform]); | ||
| expect(actual).toBe(expected); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| import * as ts from 'typescript'; | ||
| import { File, API } from '../types'; | ||
|
|
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| const methodMap: { [key: string]: string } = { | ||
| suite: 'describe', | ||
| context: 'describe', | ||
| specify: 'it', | ||
| test: 'it', | ||
| before: 'beforeAll', | ||
| beforeEach: 'beforeEach', | ||
| setup: 'beforeEach', | ||
| after: 'afterAll', | ||
| afterEach: 'afterEach', | ||
| teardown: 'afterEach', | ||
| suiteSetup: 'beforeAll', | ||
| suiteTeardown: 'afterAll' | ||
| }; | ||
|
|
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| // const jestMethodsWithDescriptionsAllowed = new Set(['it', 'describe']); | ||
|
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| const methodModifiers = ['only', 'skip']; | ||
|
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| // function hasBinding(name, scope) { | ||
| // if (!scope) { | ||
| // return false; | ||
| // } | ||
|
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| // const bindings = Object.keys(scope.getBindings()) || []; | ||
| // if (bindings.indexOf(name) >= 0) { | ||
| // return true; | ||
| // } | ||
|
|
||
| // return scope.isGlobal ? false : hasBinding(name, scope.parent); | ||
| // } | ||
|
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| export default function mochaToJest(file: File, api: API): string { | ||
| const t = api.tscodeshift; | ||
| const ast = t(file.source); | ||
|
|
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| Object.keys(methodMap).forEach(mochaMethod => { | ||
| const jestMethod = methodMap[mochaMethod]; | ||
|
|
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| ast | ||
| .find(ts.SyntaxKind.CallExpression, { | ||
| expression: { | ||
| kind: ts.SyntaxKind.Identifier, | ||
| text: mochaMethod | ||
| } | ||
| }) | ||
| // .filter(({ scope }) => !hasBinding(mochaMethod, scope)) | ||
| .get(node => node.expression) | ||
| .replaceWith(() => { | ||
| // let args = node.arguments; | ||
| // if (!jestMethodsWithDescriptionsAllowed.has(jestMethod)) { | ||
| // args = args.filter(a => a.kind !== ts.SyntaxKind.LiteralType); | ||
| // } | ||
| return ts.createIdentifier(jestMethod); | ||
| }); | ||
|
|
||
| methodModifiers.forEach(modifier => { | ||
| ast | ||
| .find(ts.SyntaxKind.CallExpression, { | ||
| expression: { | ||
| kind: ts.SyntaxKind.PropertyAccessExpression, | ||
| expression: { | ||
| kind: ts.SyntaxKind.Identifier, | ||
| text: mochaMethod | ||
| }, | ||
| name: { | ||
| kind: ts.SyntaxKind.Identifier, | ||
| text: modifier | ||
| } | ||
| } | ||
| }) | ||
| .get(node => (node.expression as ts.PropertyAccessExpression).expression) | ||
| .replaceWith(() => ts.createIdentifier(jestMethod)); | ||
| ast | ||
| .find(ts.SyntaxKind.CallExpression, { | ||
| expression: { | ||
| kind: ts.SyntaxKind.PropertyAccessExpression, | ||
| expression: { | ||
| kind: ts.SyntaxKind.Identifier, | ||
| text: mochaMethod | ||
| }, | ||
| name: { | ||
| kind: ts.SyntaxKind.Identifier, | ||
| text: modifier | ||
| } | ||
| } | ||
| }) | ||
| .get(node => (node.expression as ts.PropertyAccessExpression).name) | ||
| .replaceWith(() => ts.createIdentifier(modifier)); | ||
| }); | ||
| }); | ||
|
|
||
| return ast.toSource(); | ||
| } |
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