testcafe/lib/compiler/test-file/test-file-parser-base.js

Automated browser testing for the modern web development stack.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const fs_1 = __importDefault(require("fs"));
const promisify_1 = __importDefault(require("../../utils/promisify"));
const util_1 = require("util");
const runtime_1 = require("../../errors/runtime");
const types_1 = require("../../errors/types");
const readFile = promisify_1.default(fs_1.default.readFile);
const METHODS_SPECIFYING_NAME = ['only', 'skip'];
const COMPUTED_NAME_TEXT_TMP = '<computed name>(line: %s)';
class Fixture {
    constructor(name, start, end, loc, meta) {
        this.name = name;
        this.loc = loc;
        this.start = start;
        this.end = end;
        this.meta = meta;
        this.tests = [];
    }
}
exports.Fixture = Fixture;
class Test {
    constructor(name, start, end, loc, meta) {
        this.name = name;
        this.loc = loc;
        this.start = start;
        this.end = end;
        this.meta = meta;
    }
}
exports.Test = Test;
class TestFileParserBase {
    constructor(tokenType) {
        this.tokenType = tokenType;
    }
    static formatComputedName(line) {
        return util_1.format(COMPUTED_NAME_TEXT_TMP, line);
    }
    isAsyncFn( /* token */) {
        throw new Error('Not implemented');
    }
    getRValue( /* token */) {
        throw new Error('Not implemented');
    }
    getFunctionBody( /* token */) {
        throw new Error('Not implemented');
    }
    formatFnData( /* name, value, token */) {
        throw new Error('Not implemented');
    }
    analyzeMemberExp( /* token */) {
        throw new Error('Not implemented');
    }
    formatFnArg( /* arg */) {
        throw new Error('Not implemented');
    }
    getFnCall( /* token */) {
        throw new Error('Not implemented');
    }
    getTaggedTemplateExp( /* token */) {
        throw new Error('Not implemented');
    }
    analyzeFnCall( /* token */) {
        throw new Error('Not implemented');
    }
    parse( /* filePath, code */) {
        throw new Error('Not implemented');
    }
    getTokenType( /* token */) {
        throw new Error('Not implemented');
    }
    getCalleeToken( /* token */) {
        throw new Error('Not implemented');
    }
    getMemberFnName() {
        throw new Error('Not implemented');
    }
    getKeyValue() {
        throw new Error('Not implemented');
    }
    getStringValue() {
        throw new Error('Not implemented');
    }
    isApiFn(fn) {
        return fn === 'fixture' || fn === 'test';
    }
    serializeObjExp(token) {
        if (this.getTokenType(token) !== this.tokenType.ObjectLiteralExpression)
            return {};
        return token.properties.reduce((obj, prop) => {
            const { key, value } = this.getKeyValue(prop);
            if (typeof value !== 'string')
                return {};
            obj[key] = value;
            return obj;
        }, {});
    }
    processMetaArgs(token) {
        if (this.getTokenType(token) !== this.tokenType.CallExpression)
            return null;
        const args = token.arguments;
        let meta = {};
        if (args.length === 2) {
            const value = this.getStringValue(args[1]);
            if (typeof value !== 'string')
                return {};
            meta = { [this.formatFnArg(args[0])]: value };
        }
        else if (args.length === 1)
            meta = this.serializeObjExp(args[0]);
        return meta;
    }
    getMetaInfo(callStack) {
        return callStack.reduce((metaCalls, exp) => {
            if (this.getTokenType(exp) !== this.tokenType.CallExpression)
                return metaCalls;
            const callee = this.getCalleeToken(exp);
            const calleeType = this.getTokenType(callee);
            const isCalleeMemberExp = calleeType === this.tokenType.PropertyAccessExpression;
            if (isCalleeMemberExp && this.getMemberFnName(exp) === 'meta')
                return [this.processMetaArgs(exp)].concat(metaCalls);
            return metaCalls;
        }, []);
    }
    checkExpDefineTargetName(type, apiFn) {
        //NOTE: fixture('fixtureName').chainFn or test('testName').chainFn
        const isDirectCall = type === this.tokenType.Identifier;
        //NOTE: fixture.skip('fixtureName'), test.only('testName') etc.
        const isMemberCall = type === this.tokenType.PropertyAccessExpression &&
            METHODS_SPECIFYING_NAME.indexOf(apiFn) > -1;
        //NOTE: fixture.before().after()('fixtureName'), test.before()`testName`.after() etc.
        const isTailCall = type === this.tokenType.CallExpression;
        return isDirectCall || isMemberCall || isTailCall;
    }
    analyzeToken(token) {
        const tokenType = this.tokenType;
        const currTokenType = this.getTokenType(token);
        switch (currTokenType) {
            case tokenType.ExpressionStatement:
            case tokenType.TypeAssertionExpression:
                return this.analyzeToken(token.expression);
            case tokenType.FunctionDeclaration:
            case tokenType.FunctionExpression:
                if (this.isAsyncFn(token))
                    return null;
                return this.getFunctionBody(token).map(this.analyzeToken, this);
            case tokenType.VariableDeclaration:
            case tokenType.VariableStatement: {
                const variableValue = this.getRValue(token); // Skip variable declarations like `var foo;`
                return variableValue ? this.analyzeToken(variableValue) : null;
            }
            case tokenType.CallExpression:
            case tokenType.PropertyAccessExpression:
            case tokenType.TaggedTemplateExpression:
                return this.analyzeFnCall(token);
            case tokenType.ReturnStatement:
                return token.argument ? this.analyzeToken(token.argument) : null;
        }
        return null;
    }
    collectTestCafeCalls(astBody) {
        let calls = [];
        astBody.forEach(token => {
            const callExps = this.analyzeToken(token);
            if (callExps)
                calls = calls.concat(callExps);
        });
        return calls;
    }
    analyze(astBody) {
        const fixtures = [];
        const testCafeAPICalls = this.collectTestCafeCalls(astBody);
        testCafeAPICalls.forEach(call => {
            if (!call || typeof call.value !== 'string')
                return;
            if (call.fnName === 'fixture') {
                fixtures.push(new Fixture(call.value, call.start, call.end, call.loc, call.meta));
                return;
            }
            if (!fixtures.length)
                return;
            const test = new Test(call.value, call.start, call.end, call.loc, call.meta);
            fixtures[fixtures.length - 1].tests.push(test);
        });
        return fixtures;
    }
    async readFile(filePath) {
        let fileContent = '';
        try {
            fileContent = await readFile(filePath, 'utf8');
        }
        catch (err) {
            throw new runtime_1.GeneralError(types_1.RUNTIME_ERRORS.cannotFindSpecifiedTestSource, filePath);
        }
        return fileContent;
    }
    async getTestList(filePath) {
        const fileContent = await this.readFile(filePath);
        return this.parse(fileContent);
    }
    getTestListFromCode(code) {
        return this.parse(code);
    }
}
exports.TestFileParserBase = TestFileParserBase;
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fs from 'fs';\nimport promisify from '../../utils/promisify';\nimport { format } from 'util';\nimport { GeneralError } from '../../errors/runtime';\nimport { RUNTIME_ERRORS } from '../../errors/types';\n\nconst readFile = promisify(fs.readFile);\n\nconst METHODS_SPECIFYING_NAME = ['only', 'skip'];\nconst COMPUTED_NAME_TEXT_TMP  = '<computed name>(line: %s)';\n\nexport class Fixture {\n    constructor (name, start, end, loc, meta) {\n        this.name  = name;\n        this.loc   = loc;\n        this.start = start;\n        this.end   = end;\n        this.meta  = meta;\n        this.tests = [];\n    }\n}\n\nexport class Test {\n    constructor (name, start, end, loc, meta) {\n        this.name  = name;\n        this.loc   = loc;\n        this.start = start;\n        this.end   = end;\n        this.meta  = meta;\n    }\n}\n\nexport class TestFileParserBase {\n    constructor (tokenType) {\n        this.tokenType = tokenType;\n    }\n\n    static formatComputedName (line) {\n        return format(COMPUTED_NAME_TEXT_TMP, line);\n    }\n\n    isAsyncFn (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    getRValue (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    getFunctionBody (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    formatFnData (/* name, value, token */) {\n        throw new Error('Not implemented');\n    }\n\n    analyzeMemberExp (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    formatFnArg (/* arg */) {\n        throw new Error('Not implemented');\n    }\n\n    getFnCall (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    getTaggedTemplateExp (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    analyzeFnCall (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    parse (/* filePath, code */) {\n        throw new Error('Not implemented');\n    }\n\n    getTokenType (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    getCalleeToken (/* token */) {\n        throw new Error('Not implemented');\n    }\n\n    getMemberFnName () {\n        throw new Error('Not implemented');\n    }\n\n    getKeyValue () {\n        throw new Error('Not implemented');\n    }\n\n    getStringValue () {\n        throw new Error('Not implemented');\n    }\n\n    isApiFn (fn) {\n        return fn === 'fixture' || fn === 'test';\n    }\n\n    serializeObjExp (token) {\n        if (this.getTokenType(token) !== this.tokenType.ObjectLiteralExpression)\n            return {};\n\n        return token.properties.reduce((obj, prop) => {\n            const { key, value } = this.getKeyValue(prop);\n\n            if (typeof value !== 'string') return {};\n\n            obj[key] = value;\n\n            return obj;\n        }, {});\n    }\n\n    processMetaArgs (token) {\n        if (this.getTokenType(token) !== this.tokenType.CallExpression)\n            return null;\n\n        const args = token.arguments;\n\n        let meta = {};\n\n        if (args.length === 2) {\n            const value = this.getStringValue(args[1]);\n\n            if (typeof value !== 'string') return {};\n\n            meta = { [this.formatFnArg(args[0])]: value };\n        }\n\n        else if (args.length === 1)\n            meta = this.serializeObjExp(args[0]);\n\n        return meta;\n    }\n\n    getMetaInfo (callStack) {\n        return callStack.reduce((metaCalls, exp) => {\n            if (this.getTokenType(exp) !== this.tokenType.CallExpression)\n                return metaCalls;\n\n            const callee            = this.getCalleeToken(exp);\n            const calleeType        = this.getTokenType(callee);\n            const isCalleeMemberExp = calleeType === this.tokenType.PropertyAccessExpression;\n\n            if (isCalleeMemberExp && this.getMemberFnName(exp) === 'meta')\n                return [this.processMetaArgs(exp)].concat(metaCalls);\n\n            return metaCalls;\n        }, []);\n    }\n\n    checkExpDefineTargetName (type, apiFn) {\n        //NOTE: fixture('fixtureName').chainFn or test('testName').chainFn\n        const isDirectCall = type === this.tokenType.Identifier;\n\n        //NOTE: fixture.skip('fixtureName'), test.only('testName') etc.\n        const isMemberCall = type === this.tokenType.PropertyAccessExpression &&\n                             METHODS_SPECIFYING_NAME.indexOf(apiFn) > -1;\n\n        //NOTE: fixture.before().after()('fixtureName'), test.before()`testName`.after() etc.\n        const isTailCall = type === this.tokenType.CallExpression;\n\n        return isDirectCall || isMemberCall || isTailCall;\n    }\n\n    analyzeToken (token) {\n        const tokenType     = this.tokenType;\n        const currTokenType = this.getTokenType(token);\n\n        switch (currTokenType) {\n            case tokenType.ExpressionStatement:\n            case tokenType.TypeAssertionExpression:\n                return this.analyzeToken(token.expression);\n\n            case tokenType.FunctionDeclaration:\n            case tokenType.FunctionExpression:\n                if (this.isAsyncFn(token))\n                    return null;\n\n                return this.getFunctionBody(token).map(this.analyzeToken, this);\n\n            case tokenType.VariableDeclaration:\n            case tokenType.VariableStatement: {\n                const variableValue = this.getRValue(token); // Skip variable declarations like `var foo;`\n\n                return variableValue ? this.analyzeToken(variableValue) : null;\n            }\n            case tokenType.CallExpression:\n            case tokenType.PropertyAccessExpression:\n            case tokenType.TaggedTemplateExpression:\n                return this.analyzeFnCall(token);\n\n            case tokenType.ReturnStatement:\n                return token.argument ? this.analyzeToken(token.argument) : null;\n        }\n\n        return null;\n    }\n\n    collectTestCafeCalls (astBody) {\n        let calls = [];\n\n        astBody.forEach(token => {\n            const callExps = this.analyzeToken(token);\n\n            if (callExps)\n                calls = calls.concat(callExps);\n        });\n\n        return calls;\n    }\n\n    analyze (astBody) {\n        const fixtures         = [];\n        const testCafeAPICalls = this.collectTestCafeCalls(astBody);\n\n        testCafeAPICalls.forEach(call => {\n            if (!call || typeof call.value !== 'string') return;\n\n            if (call.fnName === 'fixture') {\n                fixtures.push(new Fixture(call.value, call.start, call.end, call.loc, call.meta));\n                return;\n            }\n\n            if (!fixtures.length) return;\n\n            const test = new Test(call.value, call.start, call.end, call.loc, call.meta);\n\n            fixtures[fixtures.length - 1].tests.push(test);\n        });\n\n        return fixtures;\n    }\n\n    async readFile (filePath) {\n        let fileContent = '';\n\n        try {\n            fileContent = await readFile(filePath, 'utf8');\n        }\n\n        catch (err) {\n            throw new GeneralError(RUNTIME_ERRORS.cannotFindSpecifiedTestSource, filePath);\n        }\n\n        return fileContent;\n    }\n\n    async getTestList (filePath) {\n        const fileContent = await this.readFile(filePath);\n\n        return this.parse(fileContent);\n    }\n\n    getTestListFromCode (code) {\n        return this.parse(code);\n    }\n}\n"]}