How to watch for thrown exceptions in PHPUnit?

How to watch for thrown exceptions in PHPUnit?

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Q. How to watch for thrown exceptions in PHPUnit?

PHPUnit provides the following functions to watch for thrown exceptions, which were released with 5.2.0: These are used to watch for an exception to be thrown and inspect the properties of that exception. Let’s start with a math function that divides (just for simplicity). It will raise an exception if the denominator is zero.

Q. What does expectexception do in PHPUnit 5.2?

The PHP compiler will emit an error if you mistype the class name. without PHPUnit being the wiser. Note: PHPUnit 5.2 introduced expectException as a replacement for setExpectedException. Code below will test exception message and exception code.

Q. Is the exception message not tested in PHP?

@LeviMorrison – IMHO the exception messageshould not be tested, similarly to log messages. Both are considered extraneous, helpful information when performing manualforensics. The key point to test is the typeof exception. Anything beyond that is binding too tightly to the implementation.

Q. What happens if no exception is thrown in assertthrows ( )?

1. Syntax The assertThrows () method asserts that execution of the supplied executable block or lambda expression which throws an exception of the expectedType. If no exception is thrown from the executable block, or if an exception of a different type is thrown, assertThrows () method will fail.

Q. When to assert the type of an exception?

So if no exception is thrown, or an exception of the wrong type is thrown, the first Assert.Throws assertion will fail. However if an exception of the correct type is thrown then you can now assert on the actual exception that you’ve saved in the variable.

Q. When does assertthrows ( ) fail in JUnit 5?

Syntax The assertThrows () method asserts that execution of the supplied executable block or lambda expression which throws an exception of the expectedType. If no exception is thrown from the executable block, or if an exception of a different type is thrown, assertThrows () method will fail.

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