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ID: java-best-practices/simplify-test-assertions-ops
Language: Java
Severity: Notice
Category: Best Practices
Test assertions can be made more concise through the utilization of a more specialized assertion method.
In this rule, we check for the use of operators, such as, ==
and !=
in assertTrue
or assertFalse
methods and suggest replacing with either a assertSame
or assertNotSame
method.
This enhances the error message clarity and improves the overall readability of the assertion for other developers.
import org.junit.Test;
import static org.junit.Assert.*;
class Foo {
Object a,b;
@Test
void testFoo() {
assertTrue(a == b); // could be assertSame(a, b);
assertTrue(a != b); // could be assertNotSame(a, b);
assertFalse(a == b); // could be assertNotSame(a, b);
assertFalse(a != b); // could be assertSame(a, b);
}
}
import org.junit.Test;
import static org.junit.Assert.*;
class Foo {
Object a,b;
@Test
void testFoo() {
assertSame(a, b);
assertNotSame(a, b);
assertNotSame(a, b);
assertSame(a, b);
}
}
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