Test Smell: Multiple Assertions

We’ve mentioned a few times in this book (one example: F[I]RST: [I]solate Your Tests) that it’s a good idea to move in the direction of a single assert per test. You’ll sometimes find reasons to assert multiple postconditions in a single test, but more often the multiple assertions indicate that you have two test cases.

Our longer test screams, “Split me!” The first case represents finding a search result in the input, and the second case represents finding no match. Split the test into two, providing each with a name that concisely states the expected behavior given the context for the test:

public​ ​class​ SearchTest {
private​ ​static​ ​final​ ​String​ A_TITLE ...

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