Beginners Guide to Unit Testing with NUnit and C#

Learn to install a unit testing framework and runner in Visual Studio, write assertions with the unit API, run tests from console, and understand setup, teardown, grouping, and code coverage.

Explore the assertion model at the heart of unit tests in NUnit and C#, using is, has, and does constraints to build expressive condition checks across strings and arrays.

Demonstrates how to unit-test a game character class with NUnit and C#, covering string validations, ignore-case comparisons, numeric and floating-point checks with tolerance, booleans, nulls, and collection and object-reference assertions.

Learn the arrange-act-assert pattern for unit testing, setting up the system under test, invoking methods, and verifying outcomes with assertions in NUnit and C#.

Learn how to run unit tests from the console using the NUnit standalone runner, including installing NUnit, locating the test assembly, and executing tests from the command prompt.

Explore how set up runs before each test and tear down after each test in NUnit, preventing shared state and disposing resources to avoid memory leaks.

Demonstrates set up fixture usage at assembly and namespace levels to initialize and clean up before tests, with one-time set up and tear down methods driving the test runner.

Refactor two health tests into a single parameterized test using the test case attribute to pass damage and expected health values, with data driven options via test case source.

Group slow tests with a category attribute at class or method level to organize them in the test explorer, and ignore failing tests with the ignore attribute.

Understand code coverage as a metric that shows how much code is covered by tests, expressed as percentages in Visual Studio's code coverage results, reflecting software health.

Explore fizzbuzz in C# with NUnit by implementing a function that returns fizz for multiples of 3, buzz for 5, fizzbuzz for both, or empty otherwise, and write unit tests.

Explore how to implement and test a single FizzBuzz method in C# using NUnit's test case attributes, with a single test method and fixture validating multiple inputs.

Implement a roman numeral parser in C# and handle subtractive notation, then validate your algorithm with unit tests to ensure correctness.

This lecture walks through implementing a roman numeral parser in C# using a dictionary to map roman numerals to Arabic values, handling subtractive notation, and validating with NUnit tests.

Write unit tests for a stack's public API, using push, pop, and peek to exercise last-in, first-out behavior, and anticipate the next lecture's solution.

Learn to unit test a stack in C# with NUnit, covering empty stack, count after pushes, pop exceptions, and peek behavior across push-pop sequences.

Apply the arrange–act–assert pattern in NUnit to write valuable unit tests, run them from the console, and use setup, teardown, and parameterized tests while grouping tests.

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