javascript-obfuscator/test/functional-tests/node-transformers/node-obfuscators/FunctionDeclarationObfuscator.spec.ts

import { assert } from 'chai';

import { IObfuscationResult } from '../../../../src/interfaces/IObfuscationResult';

import { NO_CUSTOM_NODES_PRESET } from '../../../../src/preset-options/NoCustomNodesPreset';

import { JavaScriptObfuscator } from '../../../../src/JavaScriptObfuscator';

describe('FunctionDeclarationObfuscator', () => {
    describe('obfuscation of `functionDeclaration` node names', () => {
        const obfuscationResult: IObfuscationResult = JavaScriptObfuscator.obfuscate(
            `
                function foo () {
                    function bar () {
                    }
                    
                    if (true) {
                        bar();
                    }
                }
                
                if (true) {
                    foo();
                }
            `,
            {
                ...NO_CUSTOM_NODES_PRESET
            }
        );
        const obfuscatedCode: string = obfuscationResult.getObfuscatedCode();

        it('shouldn\'t obfuscate function name if `functionDeclaration` parent block scope is a `ProgramNode`', () => {
            const functionNameIdentifierMatch: RegExpMatchArray|null = obfuscatedCode
                .match(/function *foo *\(\) *\{/);
            const functionCallIdentifierMatch: RegExpMatchArray|null = obfuscatedCode
                .match(/foo *\( *\);/);

            const functionParamIdentifierName: string = (<RegExpMatchArray>functionNameIdentifierMatch)[1];
            const functionBodyIdentifierName: string = (<RegExpMatchArray>functionCallIdentifierMatch)[1];

            assert.equal(functionParamIdentifierName, functionBodyIdentifierName);
        });

        it('should obfuscate function name if `functionDeclaration` parent block scope is not a `ProgramNode`', () => {
            const functionNameIdentifierMatch: RegExpMatchArray|null = obfuscatedCode
                .match(/function *_0x[a-z0-9]{4,6} *\(\) *\{/);
            const functionCallIdentifierMatch: RegExpMatchArray|null = obfuscatedCode
                .match(/_0x[a-z0-9]{4,6} *\( *\);/);

            const functionParamIdentifierName: string = (<RegExpMatchArray>functionNameIdentifierMatch)[1];
            const functionBodyIdentifierName: string = (<RegExpMatchArray>functionCallIdentifierMatch)[1];

            assert.equal(functionParamIdentifierName, functionBodyIdentifierName);
        });
    });
});