$ jscodeshift <path> -t assert-to-expect.js
$ jscodeshift <path> -t mocha-to-jest.js
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| const getAssertionExpression = (identifier) => ({ | |
| type: 'CallExpression', | |
| callee: { | |
| type: 'MemberExpression', | |
| object: { | |
| type: 'Identifier', | |
| name: 'assert' | |
| }, | |
| property: { | |
| type: 'Identifier', | |
| name: identifier | |
| } | |
| } | |
| }); | |
| export default function transformer(file, api) { | |
| const j = api.jscodeshift; | |
| const root = j(file.source); | |
| const makeExpectation = (identifier, actual, expectation) => { | |
| return j.callExpression(j.memberExpression( | |
| j.callExpression(j.identifier('expect'), [ actual ]), | |
| j.identifier(identifier) | |
| ), expectation ? [ expectation ] : []); | |
| }; | |
| const makeNegativeExpectation = (identifier, actual, expectation) => { | |
| return j.callExpression(j.memberExpression( | |
| j.memberExpression( | |
| j.callExpression(j.identifier('expect'), [ actual ]), | |
| j.identifier('not') | |
| ), | |
| j.identifier(identifier) | |
| ), expectation ? [ expectation ] : []); | |
| } | |
| const conversions = [ | |
| { | |
| assert: 'isOk', | |
| expect: 'toBeTruthy', | |
| ignoreExpectedValue: true | |
| }, | |
| { | |
| assert: 'isNotOk', | |
| expect: 'toBeFalsy', | |
| ignoreExpectedValue: true | |
| }, | |
| { | |
| assert: 'equal', | |
| expect: 'toEqual', | |
| includeNegative: 'notEqual' | |
| }, | |
| { | |
| assert: 'strictEqual', | |
| expect: 'toBe', | |
| includeNegative: 'notStrictEqual' | |
| }, | |
| { | |
| assert: 'deepEqual', | |
| expect: 'toEqual', | |
| includeNegative: 'notDeepEqual' | |
| }, | |
| { | |
| assert: 'isAbove', | |
| expect: 'toBeGreaterThan' | |
| }, | |
| { | |
| assert: 'isAtLeast', | |
| expect: 'toBeGreaterThanOrEqual' | |
| }, | |
| { | |
| assert: 'isBelow', | |
| expect: 'toBeLessThan' | |
| }, | |
| { | |
| assert: 'isAtMost', | |
| expect: 'toBeLessThanOrEqual' | |
| }, | |
| { | |
| assert: 'isTrue', | |
| expect: 'toBe', | |
| expectedOverride: { type: j.Literal, value: false, raw: 'true' }, | |
| includeNegative: 'isNotTrue' | |
| }, | |
| { | |
| assert: 'isFalse', | |
| expect: 'toBe', | |
| expectedOverride: { type: j.Literal, value: false, raw: 'false' }, | |
| includeNegative: 'isNotFalse' | |
| }, | |
| { | |
| assert: 'isNull', | |
| expect: 'toBeNull', | |
| ignoreExpectedValue: true, | |
| includeNegative: 'isNotNull' | |
| }, | |
| { | |
| assert: 'isNaN', | |
| expect: 'toBe', | |
| ignoreExpectedValue: true, | |
| expectedOverride: { type: j.Identifier, name: 'NaN' }, | |
| includeNegative: 'isNotNaN' | |
| }, | |
| { | |
| assert: 'isDefined', | |
| expect: 'toBeDefined', | |
| ignoreExpectedValue: true, | |
| includeNegative: 'isUndefined' | |
| }, | |
| { | |
| assert: 'instanceOf', | |
| expect: 'toBeInstanceOf', | |
| includeNegative: 'notInstanceOf' | |
| }, | |
| { | |
| assert: 'include', | |
| expect: 'toContain', | |
| includeNegative: 'notInclude' | |
| }, | |
| { | |
| assert: 'match', | |
| expect: 'toMatch', | |
| includeNegative: 'notMatch' | |
| }, | |
| { | |
| assert: 'throws', | |
| expect: 'toThrow', | |
| ignoreExpectedValue: true, | |
| includeNegative: 'doesNotThrow' | |
| } | |
| ]; | |
| // TODOS: | |
| // - isFunction | |
| // - isNotFunction | |
| // - isObject | |
| // - isNotObject | |
| // - isArray | |
| // - isNotArray | |
| // - isString | |
| // - isNotString | |
| // - isNumber | |
| // - isNotNumber | |
| // - isBoolean | |
| // - isNotBoolean | |
| // - typeOf | |
| // - notTypeOf | |
| // - property | |
| // - notProperty | |
| // - deepProperty | |
| // - notDeepProperty | |
| // - propertyVal | |
| // - propertyNotVal | |
| // - deepPropertyVal | |
| // - deepPropertyNotVal | |
| // - lengthOf | |
| // - operator | |
| // - closeTo | |
| // - approximately | |
| // - sameMembers | |
| // - sameDeepMembers | |
| // - includeMembers | |
| // - includeDeepMembers | |
| // - oneOf | |
| // - changes | |
| // - doesNotChange | |
| // - increases | |
| // - doesNotIncrease | |
| // - decreases | |
| // - doesNotDecrease | |
| // - ifError | |
| // - isExtensible | |
| // - isNotExtensible | |
| // - isSealed | |
| // - isNotSealed | |
| // - isFrozen | |
| // - isNotFrozen | |
| // | |
| const getArguments = (path, ignoreExpectedValue, expectedOverride) => { | |
| const [ actual, originalExpectation ] = path.value.arguments; | |
| const expectation = !ignoreExpectedValue ? (expectedOverride || originalExpectation) : undefined; | |
| return [ actual, expectation ]; | |
| } | |
| conversions.forEach(({ assert, expect, ignoreExpectedValue, includeNegative, expectedOverride }) => { | |
| root.find(j.CallExpression, getAssertionExpression(assert)).replaceWith((path) => { | |
| return makeExpectation(expect, ...getArguments(path, ignoreExpectedValue, expectedOverride)); | |
| }); | |
| if (includeNegative) { | |
| root.find(j.CallExpression, getAssertionExpression(includeNegative)).replaceWith((path) => { | |
| return makeNegativeExpectation(expect, ...getArguments(path, ignoreExpectedValue, expectedOverride)); | |
| }); | |
| } | |
| }); | |
| return root.toSource(); | |
| } |
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| export default function transformer(file, api) { | |
| const j = api.jscodeshift; | |
| const root = j(file.source); | |
| const mochaToJasmine = [ | |
| { mocha: 'suite', jasmine: 'describe' }, | |
| { mocha: 'test', jasmine: 'it' }, | |
| { mocha: 'setup', jasmine: 'beforeEach' }, | |
| { mocha: 'teardown', jasmine: 'afterEach' } | |
| ]; | |
| mochaToJasmine.forEach(({ mocha, jasmine }) => { | |
| root.find(j.CallExpression, { | |
| type: 'CallExpression', | |
| callee: { type: 'Identifier', name: mocha } | |
| }).replaceWith((path) => j.callExpression(j.identifier(jasmine), path.value.arguments)); | |
| root.find(j.CallExpression, { | |
| type: 'CallExpression', | |
| callee: { | |
| type: 'MemberExpression', | |
| object: { type: 'Identifier', name: mocha }, | |
| property: { type: 'Identifier', name: 'skip' } | |
| } | |
| }).replaceWith((path) => j.callExpression(j.memberExpression( | |
| j.identifier(jasmine), | |
| j.identifier('skip') | |
| ), path.value.arguments)); | |
| }); | |
| return root.toSource(); | |
| } |
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