org.sonar.l10n.pmd.rules.pmd-unit-tests.UseAssertNullInsteadOfAssertTrue.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sonar-pmd-plugin Show documentation

PMD is a tool that looks for potential problems like possible bugs, dead code, suboptimal code, overcomplicated expressions or duplicate code.

There is a newer version: 2.4

Show newest version

This rule detects JUnit assertions in object references equality. These assertions should be made by more specific methods, like assertNull, assertNotNull.
public class FooTest extends TestCase {
  void testCode() {
    Object a = doSomething();

    assertTrue(a==null); // violation
    assertNull(a);  // good usage
    assertTrue(a != null); // violation
    assertNotNull(a);  // good usage
  }
}