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Questions tagged [legacy-code]

Originally legacy code meant code 'inherited' from authors or from a previous program/system version. Since Michael Feathers published his "Working Effectively with Legacy Code" book, new definition came to be, where code without tests is legacy code.

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Data Migration from Legacy Data Structure to New Data Structure

Ok So here is the problem we are facing. Currently: We have a ton of Legacy Applications that have direct database access The data structure in the database is not normalized The current process / structure is used by almost all applications What…
Phill Pafford
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How to generate a dummy app inside an already existing rails engine

I came to work for a company recently that has been working on a specific rails project for a while. Dropped in the middle of the development process, I'm beginning to go back and write tests for the existing code as well as the code currently being…
Austintacious1
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Legacy Code Nightmare

I've inherited a project where the class diagrams closely resemble a spider web on a plate of spaghetti. I've written about 300 unit tests in the past two months to give myself a safety net covering the main executable. I have my library of agile…
Kenneth Cochran
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Will Windows 7 support the VB6 runtime?

I can't seem to find a straight answer on this. It appears that Visual Studio 6 won't be supported, but I'm only concerned with the runtime. We have some legacy apps that we'd rather not rewrite, but our customers will expect them to run on Windows…
Jon B
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Use legacy support library option in android

Should I select the Use legacy android.support libraries option when creating a new project? What will happen if I don't select this option?
jai singh Rawat
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Code refactoring on bad system design

I am a junior software engineer who've been given a task to take over a old system. This system has several problems, based on my preliminary assessment. spaghetti code repetitive code classes with 10k lines and above misuse and over-logging using…
ilovetolearn
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I'm maintaining a Java class that's 40K lines long.. problem?

This may be a subjective question leading to deletion but I would really like some feedback. Recently, I moved to another very large enterprise project where I work as a developer. I was aghast to find most classes in the project are anywhere from…
Billworth Vandory
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Starting UnitTesting on a LARGE project

Can anyone recommend some best-practices on how to tackle the problem of starting to UnitTest a large existing CodeBase? The problems that I'm currently facing include: HUGE code base ZERO existing UnitTests High coupling between classes Complex OM…
SaguiItay
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The best way to familiarize yourself with an inherited codebase

Stacker Nobody asked about the most shocking thing new programmers find as they enter the field. Very high on the list, is the impact of inheriting a codebase with which one must rapidly become acquainted. It can be quite a shock to suddenly find…
pookleblinky
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How to unit test a method with a `using` statement?

How can I write a unit test for a method that has a using statement? For example let assume that I have a method Foo. public bool Foo() { using (IMyDisposableClass client = new MyDisposableClass()) { return client.SomeOtherMethod(); …
Vadim
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Reset class static variable during unit test

I am trying to write a unit test for a legacy code. The class which I'm testing has several static variables. My test case class has a few @Test methods. Hence all of them share the same state. Is there way to reset all static variables between…
kan
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How can I handle exit() calls in 3rd party library code?

I'm working on a C++ application which uses a library written in C by another team. The writers of the library like to call exit() when errors happen, which ends the program immediately without calling the destructors of objects on the stack in the…
bythescruff
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BigQuery - IFERROR for standardSQL

I'm about to migrate queries from Legacy to Standard in BQ. In Legacy I used to have x/y returning null if y=0, however, I'm stuck in StandardSQL with the error: Error: division by zero I'd like to apply something like IFERROR(x/y,null) Is it…
Ilja
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How can you implement test driven development with legacy code?

The situation: millions of lines of code, more than one hundred developers and frequent defects. We want to avoid repeating defects and we want to improve code design (who doesn't?). Test Driven Development (first unit test, then code) sounds ideal:…
Reinstate Monica - Goodbye SE
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Preprocessor macros as parameters to other macros

The following C++ code compiles and works as the programmer intended on GCC (4.0.4) #define FOO(x,y,z) ((x)*(y)*(z)) #define BAR(x) FOO(x,1) #define BAZ 3,7 int main() { return BAR(BAZ); /* interpreted as return ((3)*(7)*(1)); */ } However,…
otto
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