improved `getBlockScopeOfNode` method tests
improved `getBlockScopeOfNode` method tests

javascript-obfuscator/javascript-obfuscator,javascript-obfuscator/javascript-obfuscator,sanex3339/javascript-obfuscator,javascript-obfuscator/javascript-obfuscator,sanex3339/javascript-obfuscator,sanex3339/javascript-obfuscator