# Quickly Testing Qt Desktop Applications with Approval Tests Clare Macrae (She/her) clare@claremacrae.co.uk 16 September 2020 CppCon (Online) ## Audience: Developers testing Desktop GUIs, including Qt —Setting Up Testing —Error-prone Things —Approval Tests • Extras -Tools —Summary ## About Me • Scientific C++ and Qt developer since 1999 • My mission: Sustainable and efficient testing and refactoring 84077/p4_2.jpg) ## About ## Building a network for the gigabit age Any Questions ? Fuzzing/Testing Track Test track at CppCon 2020 fuzzing() 1 ## Typical Scenario • I've inherited some Qt

## +23 ## Back To Basics Testing ## PHIL NASH ## 20 23 October 01 - 06 ## What is a test? ## What is a test? ## operation ## What is a test? ## operation input values ## What is a test? ## operation NegativeNegativeBottom Up IntegrationMutationVulnerabilityStructuralGUI softwaretesting pyramid System Tests Integration Tests Unit Tests ## What is a Unit Test? ## What is a Unit Test

## Scientific Unit Testing Dave Steffen, Ph.D. Software Lead dsteffen@scitec.com — in Physics which is relevant SCiTEC Science & Technology Innovation www.scitec.com If I have seen further bad tests are almost always better than no tests! ## Unit Testing OO Code ## Test using only the public interface ("Black Box" testing) • Forces better design ("design for testability") coupling to implementation • Unit tests are also examples and documentation ## Object Oriented testing ## Let's unit test this class 1 // Cup.h // creates an empty cup bool IsEmpty(); bool Fill();

## +21 ## Testing Compile-time Constructs Within a Runtime Unit Testing Framework ## I GOR BOGOSLAVSKYI 20 21 October 24-29 ## We use C++ (14) for safety-critical applications that we deliver to our ments/4/8/e/9/48e97f15addfced313a9cb60758e45d2/p2_1.jpg) Errors have a high cost, so rigorous testing is a must We use increasingly more compile-time polymorphism and checks Question: how to test if get_half_of(T smth) { return smth / T{2}; } ## Write a rigorous testing suite #include TEST(TestMyApi, Halving) { EXPECT_FLOAT_EQ(21.0F, get_half_of(42

## +24 ## Back To Basics Debugging and Testing ## GREG LAW & MIKE SHAH ### Writing software is really hard. If it’s not tested, it doesn’t work Or at least it will soon stop working. ## WHAT'S 4/p5_1.jpg) BUT WHEN I DO, DO IT IN PRODUCTION Software development done right is basically testing and debugging. ## GOOD TESTS ARE • Independent • Repeatable Fast ## DIFFERENT TESTS — ALL ARE generally shallow / easy-to-fix. Tests run fast – tight feedback loop. But... Assumptions! ## UNIT TESTING FRAMEWORKS Google Gest Catch2 Boost.Test • CppUTest • doctest ![Image](/uploads/documents/

## +24 ## Back To Basics Unit Testing ## DAVE STEFFEN ## 20 24 September 15 - 20 ## Unit Testing is a Big Topic How many youtube videos about C++ unit testing ## ✗ 🔍 🔍 ✗  Testing Compile-time Constructs in a Runtime Unit Testing ... YouTube · CppCon Feb 15, 2022 It's A Bug Hu Armor Plate You 2023 ## Unit Testing is a Big Topic • Jody Hagins (today): The Most Important Design Guideline is Testability • Greg Law and Mike Shah (tomorrow): Back To Basics, Debugging and Testing • Chip Hogg (Wednesday)

## How HP set up secure and wise platform with Istio John Zheng/ john.zheng@hp.com IstioCon HORIZON ## Agenda HP Horizon platform design with Istio ➤ Secure Platform Wise Platform Excellent Observability

## 20 23 October 01 - 06 ## +23 ## Noexcept? Enabling Testing of Contract Checks ## PABLO HALPERN & TIMUR DOUMLER ## Welcome What can the Screen Actors Guild and the Writers Guild of America tell run time How to unit test contract-checking annotations (CCAs) How noexcept interacts with unit testing of CCAs. We will go over everything twice! ## About the presenters In Absentia ## Pablo Halpern Unit Testing, CCAs and Exception Specifications CCAs can themselves use the source of bugs and should verify as part of unit testing. • Overuse of noexcept can interfere with such unit testing We've

## +23 ## Continuous Regression Testing for Safer and Faster Refactoring PEJMAN GHORBANZADE ## Continuous Regression Testing for Safer and Faster Refactoring ![Image](/uploads/documents/a/1/c/1/a1c regression testing • How does regression testing work in practice • How to build a regression testing system • Going beyond finding behavioral regressions • How to use regression testing effectively do matters Low-dose Ultra Helical CT Angiogram of the Carotids and Circle of Willis for stroke work-up. Clear visualization of contrast enhanced vessels and surrounding soft tissue enables fast and confident

## +23 ## Single Producer Single Consumer Lock-free FIFO From the Ground Up CHARLES FRASCH Charlie Frasch charles.frasch@gmail.com Senior Core Developer - IEX Group https://www.iex.io/ Code at: https://github = FifoTest/0.* [ 原代码 ...] Running 6 tests from 1 test suite. [ 原代码 ...] Global test environment set-up. [ 原代码 ...] 6 tests from FifoTest/0, where TypeParam = Fifo1 [ RUN ] FifoTest/0.properties [ OK = FifoTest/0.* [ 原代码 ...] Running 6 tests from 1 test suite. [ 代码 ...] Global test environment set-up. [ 代码 ...] 6 tests from FifoTest/0, where TypeParam = Fifo1 [ 代码 ...] FifoTest/0.properties [