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Questions tagged [assertions]

In computer programming, an assertion is a predicate (a true|false statement) placed in a program to indicate that the developer thinks that the predicate is always true at that place. If an assertion evaluates to false at run-time, an assertion failure results, which typically causes execution to abort.

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A simple unit test library for C - version II

I have improved my code here and it looks like this: Code assertlib.h: ...
coderodde's user avatar
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7 votes
1 answer
814 views

A simple unit test library for C

(This post is followed up by this one.) I have rolled this simple unit test library for C: com_github_coderodde_my_assert.h: ...
coderodde's user avatar
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3 votes
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My own ThrowHelper extension methods

I really like ArgumentNullException.ThrowIf(...) and ArgumentException.ThrowIfNullOrEmpty(...) and there are upcoming ones in ....
nop's user avatar
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4 votes
1 answer
675 views

Python function: user input to get positive integer using assert

Is it a bad thing to use asserts to validate user inputs? Or should I keep using an if statement in case the number isnt positive? Code with assert statement: ...
eddyxide's user avatar
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0 votes
1 answer
176 views

Parameter Scaling C++ Driver program

The question is: In many mathematical problems, the parameters need to be scaled, either to convert between units or to standardise measurements to a certain range of values. Write a void function ...
Strange Alchemist's user avatar
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1 answer
893 views

User Input in class sanitized

I want to sanitize my user input in my class. All is working as expected but first of all, I would like to avoid to set a default value for my digit parameter. ...
Alex_P's user avatar
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0 votes
1 answer
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Type that returns a result based on some logic [closed]

I have a type that returns a result based on some logic. The result contains a message. Should a good unit test check that the message is correct? A negligible amount has changed as I'm not allowed ...
Steve Dunn's user avatar
2 votes
1 answer
906 views

Custom timer assert

I would like to make a custom Assertion for my unit test, which would measure the execution time of two c# functions and compare them. I have written the code below, but there is a better way? ...
GGO's user avatar
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0 votes
1 answer
492 views

MS Fakes Shims. Assert "was called" (by closures)

Is it a good or bad practice to use closures for asserting the method was called in such a way? The method set a shim and return an Action wich both capture local mutable variable: ...
SerG's user avatar
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1 answer
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Test helper method to assert if text could be found

Lately I've been getting a lot of critique in my code reviews at work, where typical comments have been that my variable names are unclear/confusing, flow in method could be simplified, unnecessary ...
Force444's user avatar
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3 votes
1 answer
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Verifying user accounts on SMTP servers

I've been writing a basic script to enumerate SMTP users (via a user dictionary) on poorly configured SMTP servers. In scripts like this, I usually see arguments handled as follows: ...
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3 votes
2 answers
1k views

Simple JavaScript precondition checking implementation

I am writing a JavaScript application and would like to validate function arguments in many places. Most of these checks will be for correct argument types, or numeric values within specific ranges. ...
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5 votes
2 answers
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Unit testing private constructors and getter setters

I have a class Address, a class AddressTest and I am trying to write unit tests for its constructors and getter setters. ...
Sandeep Chatterjee's user avatar
19 votes
1 answer
510 views

Suggesting "safe enum" class for ISO C

There are quite some questions and answers about how to make enum really type-safe and I didn't find a solution that ensures both type safety and valid values. So I ...
Felix Palmen's user avatar
13 votes
1 answer
2k views

Compile-time printf-style format checking

Inspired by this open ticket on Boost, this seeks to complete the work there. Given a printf-style format string and associated arguments, a static_assert is ...
Steve Lorimer's user avatar
5 votes
1 answer
3k views

Compile-time printf format checking

Compile time checking of printf-like format strings Inspired by this open ticket on boost, this seeks to complete the work there Given a printf-style format string and associated arguments, a ...
Steve Lorimer's user avatar
1 vote
1 answer
72 views

How can I ensure some structure for classes for a plug-in system written in Python? [closed]

I have written a toolkit (hwrt) which has a plugin system. One type of plugin is a feature (see this) for many of them. There are some restrictions of feature ...
Martin Thoma's user avatar
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4 votes
2 answers
628 views

NSAssert or NSLog in defaults switch case

I am wondering if I should use NSLog(@"Switch out of range") or NSAssert(FALSE,@"Switch out of range"); in the following example:...
Szu's user avatar
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5 votes
1 answer
214 views

Better way to assert correct return values in Groovy

I have written a function that returns me the duplicates of a list: ...
valenterry's user avatar
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1 answer
956 views

Automatically run doctest every time program is run

I would like this to happen every time I run a program from the command line. Is my approach Pythonic? I'm interested to know whether there is any problem with readability or correctness. Any general ...
trichoplax is on Codidact now's user avatar
6 votes
1 answer
512 views

How should I structure my Unit tests for minimal Asserts?

I always see comments about how a Unit Test should only be testing one piece of functionality. For the most part, I definitely agree with that assessment. However, I'm working on testing a method ...
krillgar's user avatar
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10 votes
5 answers
3k views

Testing code with Debug.Assert

I have a small little function in a VB6 codebase: ...
Mathieu Guindon's user avatar
5 votes
2 answers
348 views

What might be another way to test if int is 32 bits wide at compile time?

Below is code that will compile when INT_MAX is equal to 232. It will generate a compiler error when INT_MAX is not equal to 232....
KeithSmith's user avatar
5 votes
2 answers
699 views

Defensive programming type-checking

I have issues with dynamically typed languages, and I tend to worry about type a lot. Numpy has different behaviour depending on if something is a matrix or a plain ndarray, or a list. I didn't ...
Frames Catherine White's user avatar
8 votes
1 answer
2k views

Vector of derived classes

Everyone knows you can't put a Derived in an std::vector<Base>. I decided to implement a collection which does allow you ...
Komi Golov's user avatar
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