* PrimitiveIntegerValidator.isNotEqualTo() and PrimitiveUnsignedIntegerValidator.isNotEqualTo() were validating the opposite conditions that they were supposed to.

* Added JsonNodeValidator.size().
* Warn the user if they invoke DefaultJavaValidators.requireThat() on a Jackson type instead of DefaultJacksonValidators.requireThat().
* Added a dependency on SLF4J.

Author: cowwoc

docs/changelog.md

@@ -2,8 +2,12 @@ Minor updates involving cosmetic changes have been omitted from this list.
 
 See https://github.com/cowwoc/requirements.java/commits/main for a full list.
 
-## Version 10.12 - ?
+## Version 10.12 - 2025/02/13
 
+* Bugfixes
+    * `PrimitiveIntegerValidator.isNotEqualTo()` and `PrimitiveUnsignedIntegerValidator.isNotEqualTo()` were
+      validating the opposite conditions that they were supposed to.
+* Added `JsonNodeValidator.size()`.
 * Warn the user if they invoke `DefaultJavaValidators.requireThat()` on a Jackson type instead of
   `DefaultJacksonValidators.requireThat()`.
 * Added a dependency on SLF4J.

jackson/src/main/java/com/github/cowwoc/requirements10/jackson/internal/validator/JsonNodeValidatorImpl.java

@@ -20,8 +20,11 @@
 import com.github.cowwoc.requirements10.java.ValidationFailure;
 import com.github.cowwoc.requirements10.java.internal.Configuration;
 import com.github.cowwoc.requirements10.java.internal.scope.ApplicationScope;
+import com.github.cowwoc.requirements10.java.internal.util.Pluralizer;
 import com.github.cowwoc.requirements10.java.internal.util.ValidationTarget;
 import com.github.cowwoc.requirements10.java.internal.validator.AbstractObjectValidator;
+import com.github.cowwoc.requirements10.java.internal.validator.ObjectSizeValidatorImpl;
+import com.github.cowwoc.requirements10.java.validator.PrimitiveUnsignedIntegerValidator;
 
 import java.util.List;
 import java.util.Map;
@@ -67,6 +70,14 @@ public JsonNodeValidator<JsonNode> property(String name)
 			failures);
 	}
 
+	@Override
+	public PrimitiveUnsignedIntegerValidator size()
+	{
+		failOnNull();
+		return new ObjectSizeValidatorImpl(scope, configuration, this, name + ".size()",
+			value.nullToInvalid().map(JsonNode::size), Pluralizer.ELEMENT, context, failures);
+	}
+
 	@Override
 	public JsonNodeValidator<NumericNode> isNumber()
 	{

jackson/src/main/java/com/github/cowwoc/requirements10/jackson/validator/JsonNodeValidator.java

@@ -16,6 +16,7 @@
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import com.fasterxml.jackson.databind.node.TextNode;
 import com.fasterxml.jackson.databind.node.ValueNode;
+import com.github.cowwoc.requirements10.java.validator.PrimitiveUnsignedIntegerValidator;
 import com.github.cowwoc.requirements10.java.validator.component.ObjectComponent;
 import com.github.cowwoc.requirements10.java.validator.component.ValidatorComponent;
 
@@ -38,6 +39,14 @@ public interface JsonNodeValidator<T extends JsonNode> extends
 	 */
 	JsonNodeValidator<JsonNode> property(String name);
 
+	/**
+	 * Returns a validator over the node's {@link JsonNode#size() size}.
+	 *
+	 * @return a validator over the node's {@link JsonNode#size() size}
+	 * @throws NullPointerException if the value is null
+	 */
+	PrimitiveUnsignedIntegerValidator size();
+
 	/**
 	 * Ensures that the node contains a {@code Number}.
 	 *

java/src/main/java/com/github/cowwoc/requirements10/java/internal/validator/Integers.java

@@ -108,7 +108,7 @@ public S isNotEqualTo(int unwanted, String name)
 
 	private S isNotEqualToImpl(int unwanted, String name)
 	{
-		if (validator.value.validationFailed(v -> v == unwanted))
+		if (validator.value.validationFailed(v -> v != unwanted))
 		{
 			validator.addIllegalArgumentException(
 				ValidatorMessages.isNotEqualToFailed(validator, name, unwanted).toString());

pom.xml

@@ -62,9 +62,9 @@
 		<error_prone_annotations.version>2.26.1</error_prone_annotations.version>
 		<jackson.version>2.18.2</jackson.version>
 		<slf4j.version>2.0.16</slf4j.version>
-		<testng.version>7.10.2</testng.version>
+		<testng.version>7.11.0</testng.version>
 		<jmh.version>1.37</jmh.version>
-		<pmd.version>7.9.0</pmd.version>
+		<pmd.version>7.10.0</pmd.version>
 	</properties>
 
 	<dependencyManagement>

test/src/test/java/com/github/cowwoc/requirements10/test/java/ArrayTest.java

@@ -1035,8 +1035,7 @@ public void lengthIsNotEqualToVariable()
 				{
 					"element"
 				};
-			validators.requireThat(actual, "actual").length().
-				isNotEqualTo(2, "expectedName");
+			validators.requireThat(actual, "actual").length().isNotEqualTo(2, "expectedName");
 		}
 	}
 

test/src/test/java/com/github/cowwoc/requirements10/test/java/NumberTest.java

@@ -41,6 +41,58 @@ public void nameIsEmpty()
 		}
 	}
 
+	@Test
+	public void isEqualTo()
+	{
+		try (ApplicationScope scope = new TestApplicationScope(NONE))
+		{
+			TestValidators validators = TestValidators.of(scope);
+
+			int actual = 0;
+			int expected = 0;
+			validators.requireThat(actual, "actual").isEqualTo(expected);
+		}
+	}
+
+	@Test(expectedExceptions = IllegalArgumentException.class)
+	public void isEqualTo_False()
+	{
+		try (ApplicationScope scope = new TestApplicationScope(NONE))
+		{
+			TestValidators validators = TestValidators.of(scope);
+
+			int actual = 0;
+			int expected = 1;
+			validators.requireThat(actual, "actual").isEqualTo(expected);
+		}
+	}
+
+	@Test
+	public void isNotEqualTo()
+	{
+		try (ApplicationScope scope = new TestApplicationScope(NONE))
+		{
+			TestValidators validators = TestValidators.of(scope);
+
+			int actual = 0;
+			int expected = 1;
+			validators.requireThat(actual, "actual").isNotEqualTo(expected);
+		}
+	}
+
+	@Test(expectedExceptions = IllegalArgumentException.class)
+	public void isNotEqualTo_False()
+	{
+		try (ApplicationScope scope = new TestApplicationScope(NONE))
+		{
+			TestValidators validators = TestValidators.of(scope);
+
+			int actual = 0;
+			int expected = 0;
+			validators.requireThat(actual, "actual").isNotEqualTo(expected);
+		}
+	}
+
 	@Test
 	public void isBetween_actualIsLowerBound()
 	{