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Document benefits of messageSupplier in Assertions #3635

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Document benefits of messageSupplier in Assertions #3635

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8ebf479
Document benefits of MessageSupplier in Assertions Issue: #3153
ankitwasankar Jan 10, 2024
abd72f5
Document benefits of MessageSupplier in Assertions Issue: #3153
ankitwasankar Jan 21, 2024
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10 changes: 7 additions & 3 deletions documentation/src/test/java/example/AssertionsDemo.java
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Expand Up @@ -39,10 +39,14 @@ class AssertionsDemo {
@Test
void standardAssertions() {
assertEquals(2, calculator.add(1, 1));
// When assertion failure message is used as a plain expression,
// the expression will be evaluated irrespective of the assertion result.
assertEquals(4, calculator.multiply(2, 2),
"The optional failure message is now the last parameter");
assertTrue('a' < 'b', () -> "Assertion messages can be lazily evaluated -- "
+ "to avoid constructing complex messages unnecessarily.");
"This expression will always evaluate irrespective of assertion result.");
// When assertion failure message is created as a lambda expression,
// expression will only evaluate when assertion result is failed (lazy evaluation)
// and can help us save unnecessary computations when they are not needed.
assertTrue('a' < 'b', () -> "This lambda will evaluate only if assertion fails.");
}

@Test
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