---
title: Test assertions for booleans can be simplified
description: Datadog, the leading service for cloud-scale monitoring.
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  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > Test assertions for booleans can be simplified
---

# Test assertions for booleans can be simplified

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## Metadata{% #metadata %}

**ID:** `java-best-practices/simplify-test-assertions-boolean`

**Language:** Java

**Severity:** Notice

**Category:** Best Practices

## Description{% #description %}

Test assertions can be made more concise through the utilization of a more specialized assertion method.

This rule checks for a not operator (`!`) in `assertTrue` or `assertFalse` methods and suggests replacing the operator with the `assertTrue` or `assertFalse` method.

This enhances the error message clarity and improves the overall readability of the assertion for other developers.

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```java
import org.junit.Test;
import static org.junit.Assert.*;

class Foo {
    Object a,b;
    @Test
    void testFoo() {
        assertTrue(!something); // could be assertFalse(something);
        assertFalse(!something); // could be assertTrue(something);
    }
}
```

## Compliant Code Examples{% #compliant-code-examples %}

```java
import org.junit.Test;
import static org.junit.Assert.*;

class Foo {
    Object a,b;
    @Test
    void testFoo() {
        assertFalse(something);
        assertTrue(something);
    }
}
```
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