Class AbstractClassAssert<SELF extends AbstractClassAssert<SELF>>

java.lang.Object
org.assertj.core.api.AbstractAssert<SELF,Class<?>>
org.assertj.core.api.AbstractClassAssert<SELF>
Type Parameters:
SELF - the "self" type of this assertion class. Please read "Emulating 'self types' using Java Generics to simplify fluent API implementation" for more details.
All Implemented Interfaces:
Assert<SELF,Class<?>>, Descriptable<SELF>, ExtensionPoints<SELF,Class<?>>
Direct Known Subclasses:
ClassAssert

public abstract class AbstractClassAssert<SELF extends AbstractClassAssert<SELF>> extends AbstractAssert<SELF,Class<?>>
Base class for all implementations of assertions for Classes.
  • Field Details

  • Constructor Details

    • AbstractClassAssert

      protected AbstractClassAssert(Class<?> actual, Class<?> selfType)
  • Method Details

    • isAssignableFrom

      public SELF isAssignableFrom(Class<?>... others)
      Verifies that the actual Class is assignable from others Class

      Example:

       class Jedi {}
       class HumanJedi extends Jedi {}
      
       // this assertion succeeds:
       assertThat(Jedi.class).isAssignableFrom(HumanJedi.class);
      
       // this assertion fails:
       assertThat(HumanJedi.class).isAssignableFrom(Jedi.class);
      Parameters:
      others - Class who can be assignable from.
      Returns:
      this assertions object
      Throws:
      AssertionError - if the actual Class is null.
      IllegalArgumentException - if no others classes have been specified.
      AssertionError - if the actual Class is not assignable from all of the others classes.
      See Also:
    • isAssignableTo

      public SELF isAssignableTo(Class<?> other)
      Verifies that the Class under test is assignable to the given Class.

      Example:

       class Jedi {}
       class HumanJedi extends Jedi {}
      
       // this assertion succeeds:
       assertThat(HumanJedi.class).isAssignableTo(Jedi.class);
      
       // this assertion fails
       assertThat(Jedi.class).isAssignableTo(HumanJedi.class);
      Parameters:
      other - Class who can be assignable to.
      Returns:
      this assertions object
      Throws:
      AssertionError - if the actual Class is null.
      IllegalArgumentException - if other is null.
      AssertionError - if the actual Class is not assignable to the others class.
      Since:
      3.24.0
      See Also:
    • assertIsAssignableTo

      private void assertIsAssignableTo(Class<?> other)
    • isNotInterface

      public SELF isNotInterface()
      Verifies that the actual Class is not an interface.

      Example:

       interface Jedi {}
       class HumanJedi implements Jedi {}
      
       // this assertion succeeds:
       assertThat(HumanJedi.class).isNotInterface();
      
       // this assertion fails:
       assertThat(Jedi.class).isNotInterface();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not an interface.
    • assertIsNotInterface

      private void assertIsNotInterface()
    • isInterface

      public SELF isInterface()
      Verifies that the actual Class is an interface.

      Example:

       interface Jedi {}
       class HumanJedi implements Jedi {}
      
       // this assertion succeeds:
       assertThat(Jedi.class).isInterface();
      
       // this assertion fails:
       assertThat(HumanJedi.class).isInterface();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not an interface.
    • assertIsInterface

      private void assertIsInterface()
    • isAbstract

      public SELF isAbstract()
      Verifies that the actual Class is abstract (has abstract modifier).

      Example:

       public abstract class MyClass { }
      
       // this assertion succeeds:
       assertThat(MyClass.class).isAbstract();
      
       // this assertion fails:
       assertThat(String.class).isAbstract();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not abstract.
      Since:
      3.12.0
    • assertIsAbstract

      private void assertIsAbstract()
    • isAnnotation

      public SELF isAnnotation()
      Verifies that the actual Class is an annotation.

      Example:

       public @interface Jedi {}
      
       // these assertions succeed:
       assertThat(Jedi.class).isAnnotation();
       assertThat(Override.class).isAnnotation();
       assertThat(Deprecated.class).isAnnotation();
      
       // this assertion fails:
       assertThat(String.class).isAnnotation();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not an annotation.
    • assertIsAnnotation

      private void assertIsAnnotation()
    • isNotAnnotation

      public SELF isNotAnnotation()
      Verifies that the actual Class is not an annotation.

      Example:

       public @interface Jedi {}
      
       // this assertion succeeds:
       assertThat(String.class).isNotAnnotation();
      
       // these assertions fail:
       assertThat(Jedi.class).isNotAnnotation();
       assertThat(Override.class).isNotAnnotation();
       assertThat(Deprecated.class).isNotAnnotation();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is an annotation.
    • assertIsNotAnnotation

      private void assertIsNotAnnotation()
    • isRecord

      public SELF isRecord()
      Verifies that the actual Class is a record.

      Example:

       public record Jedi(String name) {}
      
       // this assertion succeeds:
       assertThat(Jedi.class).isRecord();
      
       // this assertion fails:
       assertThat(String.class).isRecord();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not a record.
      Since:
      3.25.0
    • assertIsRecord

      private void assertIsRecord()
    • isNotRecord

      public SELF isNotRecord()
      Verifies that the actual Class is not a record.

      Example:

       public record Jedi(String name) {}
      
       // this assertion succeeds:
       assertThat(String.class).isNotRecord();
      
       // this assertion fails:
       assertThat(Jedi.class).isNotRecord();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is a record.
      Since:
      3.25.0
    • assertIsNotRecord

      private void assertIsNotRecord()
    • isRecord

      private static boolean isRecord(Class<?> actual)
    • hasRecordComponents

      public SELF hasRecordComponents(String first, String... rest)
      Verifies that the actual Class has the given record components

      Example:

       public class NotARecord {}
      
       public record MyRecord(String componentOne, String componentTwo) {}
      
       // these assertions succeed:
       assertThat(MyRecord.class).hasRecordComponents("componentOne");
       assertThat(MyRecord.class).hasRecordComponents("componentOne", "componentTwo");
      
       // these assertions fail:
       assertThat(NotARecord.class).hasRecordComponents("componentOne");
       assertThat(MyRecord.class).hasRecordComponents("componentOne", "unknownComponent");
      Parameters:
      first - the first record component name which must be in this class
      rest - the remaining record component names which must be in this class
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not a record.
      AssertionError - if the actual Class doesn't contain all the record component names.
      Since:
      3.25.0
    • assertHasRecordComponents

      private void assertHasRecordComponents(String first, String[] rest)
    • getRecordComponentNames

      private static Set<String> getRecordComponentNames(Class<?> actual)
    • isFinal

      public SELF isFinal()
      Verifies that the actual Class is final (has final modifier).

      Example:

       // these assertions succeed:
       assertThat(String.class).isFinal();
       assertThat(Math.class).isFinal();
      
       // these assertions fail:
       assertThat(Object.class).isFinal();
       assertThat(Throwable.class).isFinal();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not final.
    • assertIsFinal

      private void assertIsFinal()
    • isNotFinal

      public SELF isNotFinal()
      Verifies that the actual Class is not final (does not have final modifier).

      Example:

       // these assertions succeed:
       assertThat(Object.class).isNotFinal();
       assertThat(Throwable.class).isNotFinal();
      
       // these assertions fail:
       assertThat(String.class).isNotFinal();
       assertThat(Math.class).isNotFinal();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is final.
    • assertIsNotFinal

      private void assertIsNotFinal()
    • isPublic

      public SELF isPublic()
      Verifies that the actual Class is public (has public modifier).

      Example:

       protected class MyClass { }
      
       // these assertions succeed:
       assertThat(String.class).isPublic();
       assertThat(Math.class).isPublic();
      
       // This assertion fails:
       assertThat(MyClass.class).isPublic();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not public.
      Since:
      2.7.0 / 3.7.0
    • assertIsPublic

      private void assertIsPublic()
    • isProtected

      public SELF isProtected()
      Verifies that the actual Class is protected (has protected modifier).

      Example:

       public class MyClass { }
      
       // this assertion succeeds:
       assertThat(MyClass.class).isProtected();
      
       // these assertions fail:
       assertThat(String.class).isProtected();
       assertThat(Math.class).isProtected();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not protected.
      Since:
      2.7.0 / 3.7.0
    • assertIsProtected

      private void assertIsProtected()
    • isPackagePrivate

      public SELF isPackagePrivate()
      Verifies that the actual Class is package-private (has no modifier).

      Example:

       class MyClass { }
      
       // this assertion succeeds:
       assertThat(MyClass.class).isPackagePrivate();
      
       // these assertions fail:
       assertThat(String.class).isPackagePrivate();
       assertThat(Math.class).isPackagePrivate();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not package-private.
      Since:
      3.15.0
    • assertIsPackagePrivate

      private void assertIsPackagePrivate()
    • isStatic

      public SELF isStatic()
      Verifies that the actual Class is static (has static modifier).

      Example:

       class OuterClass {
          static class StaticNestedClass { }
       }
       // this assertion succeeds:
       assertThat(OuterClass.StaticNestedClass.class).isStatic();
      
       // these assertions fail:
       assertThat(Object.class).isStatic();
       assertThat(Throwable.class).isStatic();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not static.
      Since:
      3.23.0
    • assertIsStatic

      private void assertIsStatic()
    • isNotStatic

      public SELF isNotStatic()
      Verifies that the actual Class is not static (does not have static modifier).

      Example:

       // these assertions succeed:
       assertThat(Object.class).isNotStatic();
       assertThat(Throwable.class).isNotStatic();
      
       class OuterClass {
          static class StaticNestedClass { }
       }
       // this assertion fails:
       assertThat(OuterClass.StaticNestedClass.class).isNotStatic();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is static.
      Since:
      3.23.0
    • assertIsNotStatic

      private void assertIsNotStatic()
    • hasAnnotations

      @SafeVarargs public final SELF hasAnnotations(Class<? extends Annotation>... annotations)
      Verifies that the actual Class has the given Annotations.

      Example:

       @Target(ElementType.TYPE)
       @Retention(RetentionPolicy.RUNTIME)
       private static @interface Force { }
      
       @Target(ElementType.TYPE)
       @Retention(RetentionPolicy.RUNTIME)
       private static @interface Hero { }
      
       @Target(ElementType.TYPE)
       @Retention(RetentionPolicy.RUNTIME)
       private static @interface DarkSide { }
      
       @Hero @Force
       class Jedi implements Jedi {}
      
       // this assertion succeeds:
       assertThat(Jedi.class).containsAnnotations(Force.class, Hero.class);
      
       // this assertion fails:
       assertThat(Jedi.class).containsAnnotations(Force.class, DarkSide.class);
      Parameters:
      annotations - annotations who must be attached to the class
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contains all of these annotations.
    • hasAnnotationsForProxy

      protected SELF hasAnnotationsForProxy(Class<? extends Annotation>[] annotations)
    • hasAnnotation

      public SELF hasAnnotation(Class<? extends Annotation> annotation)
      Verifies that the actual Class has the given Annotation.

      Example:

       @Target(ElementType.TYPE)
       @Retention(RetentionPolicy.RUNTIME)
       private static @interface Force { }
       @Force
       class Jedi implements Jedi {}
      
       // this assertion succeeds:
       assertThat(Jedi.class).containsAnnotation(Force.class);
      
       // this assertion fails:
       assertThat(Jedi.class).containsAnnotation(DarkSide.class);
      Parameters:
      annotation - annotations who must be attached to the class
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contains all of these annotations.
    • hasSuperclass

      public SELF hasSuperclass(Class<?> superclass)
      Verifies that the actual Class has the given class as direct superclass (as in Class.getSuperclass()).

      The expected superclass should always be not null. To verify the absence of the superclass, use hasNoSuperclass().

      Example:

       // this assertion succeeds:
       assertThat(Integer.class).hasSuperclass(Number.class);
      
       // this assertion succeeds as superclass for array classes is Object:
       assertThat(Integer[].class).hasSuperclass(Object.class);
      
       // this assertion fails:
       assertThat(String.class).hasSuperclass(Number.class);
      
       // this assertion fails as only direct superclass matches:
       assertThat(String.class).hasSuperclass(Object.class);
      
       // this assertion fails as interfaces are not superclasses:
       assertThat(String.class).hasSuperclass(Comparable.class);
      Parameters:
      superclass - the class which must be the direct superclass of actual.
      Returns:
      this assertions object
      Throws:
      NullPointerException - if superclass is null.
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't have the given class as direct superclass.
      Since:
      3.15.0
      See Also:
    • assertHasSuperclass

      private void assertHasSuperclass(Class<?> superclass)
    • hasNoSuperclass

      public SELF hasNoSuperclass()
      Verifies that the actual Class has no superclass (as in Class.getSuperclass(), when null is returned).

      Example:

       // this assertion succeeds as Object has no superclass:
       assertThat(Object.class).hasNoSuperclass();
      
       // this assertion succeeds as interfaces have no superclass:
       assertThat(Cloneable.class).hasNoSuperclass();
      
       // this assertion succeeds as primitive types have no superclass:
       assertThat(Integer.TYPE).hasNoSuperclass();
      
       // this assertion succeeds as void type has no superclass:
       assertThat(Void.TYPE).hasNoSuperclass();
      
       // this assertion fails as Integer has Number as superclass:
       assertThat(Integer.class).hasNoSuperclass();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class has a superclass.
      Since:
      3.15.0
      See Also:
    • assertHasNoSuperclass

      private void assertHasNoSuperclass()
    • hasFields

      @Deprecated public SELF hasFields(String... fields)
      Deprecated.
      Parameters:
      fields - the fields who must be in the class.
      Returns:
      this assertions object
    • hasPublicFields

      public SELF hasPublicFields(String... fields)
      Verifies that the actual Class has the given accessible public fields (as in Class.getFields()).

      Example:

       class MyClass {
           public String fieldOne;
           protected String fieldTwo;
           String fieldThree;
           private String fieldFour;
       }
      
       // this assertion succeeds:
       assertThat(MyClass.class).hasPublicFields("fieldOne");
      
       // these assertions fail:
       assertThat(MyClass.class).hasPublicFields("fieldTwo");
       assertThat(MyClass.class).hasPublicFields("fieldThree");
       assertThat(MyClass.class).hasPublicFields("fieldFour");
       assertThat(MyClass.class).hasPublicFields("unknownField");

      The assertion succeeds if no given fields are passed and the actual Class has no accessible public fields.

      Parameters:
      fields - the fields who must be in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contain all of the fields.
      See Also:
    • hasOnlyPublicFields

      public SELF hasOnlyPublicFields(String... fields)
      Verifies that the actual Class only has the given accessible public fields (as in Class.getFields()) and nothing more in any order.

      Example:

       class MyClass {
           public String fieldOne;
           public String fieldTwo;
           private String fieldThree;
       }
      
       // these assertions succeed:
       assertThat(MyClass.class).hasOnlyPublicFields("fieldOne", "fieldTwo");
       assertThat(MyClass.class).hasOnlyPublicFields("fieldTwo", "fieldOne");
      
       // this assertion fails:
       assertThat(MyClass.class).hasOnlyPublicFields("fieldOne");

      The assertion succeeds if no given fields are passed and the actual Class has no accessible public fields.

      Parameters:
      fields - all the fields that are expected to be in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if fields are not all the actual Class's accessible public fields.
      Since:
      2.7.0 / 3.7.0
      See Also:
    • hasDeclaredFields

      public SELF hasDeclaredFields(String... fields)
      Verifies that the actual Class has the given declared fields (as in Class.getDeclaredFields()).

      Example:

       class MyClass {
           public String fieldOne;
           private String fieldTwo;
       }
      
       // this assertion succeeds:
       assertThat(MyClass.class).hasDeclaredFields("fieldOne", "fieldTwo");
      
       // this assertion fails:
       assertThat(MyClass.class).hasDeclaredFields("fieldThree");

      The assertion succeeds if no given fields are passed and the actual Class has no declared fields.

      Parameters:
      fields - the fields who must be declared in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contains all of the field.
      See Also:
    • hasOnlyDeclaredFields

      public SELF hasOnlyDeclaredFields(String... fields)
      Verifies that the actual Class only has the given declared fields and nothing more in any order (as in Class.getDeclaredFields()).

      Example:

       class MyClass {
           public String fieldOne;
           public String fieldTwo;
           private String fieldThree;
           private String fieldFour;
       }
      
       // this assertion succeeds:
       assertThat(MyClass.class).hasOnlyDeclaredFields("fieldOne", "fieldTwo", "fieldThree", "fieldFour");
      
       // this assertion fails:
       assertThat(MyClass.class).hasOnlyDeclaredFields("fieldOne", "fieldThree");

      The assertion succeeds if no given fields are passed and the actual Class has no declared fields.

      Parameters:
      fields - all the fields that are expected to be in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if fields are not all the declared fields of the actual Class.
      Since:
      2.7.0 / 3.7.0
      See Also:
    • hasMethods

      public SELF hasMethods(String... methodNames)
      Verifies that the actual Class has the given methods (including inherited) whatever their visibility are.

      Example:

       class MySuperClass {
           public void superMethod() {}
           private void privateSuperMethod() {}
       }
      
       class MyClass extends MySuperClass {
           public void methodOne() {}
           private void methodTwo() {}
       }
      
       // this assertion succeeds:
       assertThat(MyClass.class).hasMethods("methodOne", "methodTwo", "superMethod", "privateSuperMethod");
      
       // this assertion fails:
       assertThat(MyClass.class).hasMethods("methodThree");
      Parameters:
      methodNames - the method names which must be in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contains all of the method names.
      Since:
      2.7.0 / 3.7.0
    • hasDeclaredMethods

      public SELF hasDeclaredMethods(String... methodNames)
      Verifies that the actual Class has the given declared methods.

      Example:

       class MySuperClass {
           public void superMethod() {}
       }
      
       class MyClass extends MySuperClass {
           public void methodOne() {}
           private void methodTwo() {}
       }
      
       // This assertion succeeds:
       assertThat(MyClass.class).hasDeclaredMethods("methodOne", "methodTwo");
      
       // these assertions fail:
       assertThat(MyClass.class).hasDeclaredMethods("superMethod");
       assertThat(MyClass.class).hasDeclaredMethods("methodThree");

      The assertion succeeds if no given methods are passed and the actual Class has no declared methods.

      Parameters:
      methodNames - the method names which must be declared in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contains all of the given methods.
      Since:
      2.7.0 / 3.7.0
    • hasPublicMethods

      public SELF hasPublicMethods(String... methodNames)
      Verifies that the actual Class has the given public methods.

      Example:

       class MyClass {
           public void methodOne() {}
           public void methodTwo() {}
           protected void methodThree() {}
       }
      
       // these assertions succeed:
       assertThat(MyClass.class).hasPublicMethods("methodOne");
       assertThat(MyClass.class).hasPublicMethods("methodOne", "methodTwo");
      
       // these assertions fail:
       assertThat(MyClass.class).hasPublicMethods("methodOne", "methodThree");
       assertThat(MyClass.class).hasPublicMethods("methodThree");
      Parameters:
      methodNames - the public method names which must be in the class.
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class doesn't contains all of the given public methods.
      Since:
      2.7.0 / 3.7.0
    • hasPackage

      public SELF hasPackage(String expected)
      Verifies that the actual Class has the given package name (as in Class.getPackage()).

      The expected package name should always be not null. To verify the absence of the package, use hasNoPackage().

      Example:

       package one.two;
      
       class MyClass {}
      
       // this assertions succeeds:
       assertThat(MyClass.class).hasPackage("one.two");
      
       // these assertions fail:
       assertThat(MyClass.class).hasPackage("one");
       assertThat(MyClass.class).hasPackage("");
       assertThat(MyClass.class).hasPackage("java.lang");
      Parameters:
      expected - the package name the class should have
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class does not have the given package.
      Since:
      3.18.0
    • assertHasPackage

      private void assertHasPackage(String packageName)
    • hasPackage

      public SELF hasPackage(Package expected)
      Verifies that the actual Class has the given package (as in Class.getPackage()).

      The expected package should always be not null. To verify the absence of the package, use hasNoPackage().

      Example:

       package one.two;
      
       class MyClass {}
      
       // these assertions succeed:
       assertThat(MyClass.class).hasPackage(Package.getPackage("one.two"));
       assertThat(MyClass.class).hasPackage(MyClass.class.getPackage());
      
       // these assertions fail:
       assertThat(MyClass.class).hasPackage(Package.getPackage("one"));
       assertThat(MyClass.class).hasPackage(Package.getPackage(""));
       assertThat(MyClass.class).hasPackage(Object.class.getPackage());
      Parameters:
      expected - the package the class should have
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class does not have the given package.
      Since:
      3.18.0
      See Also:
    • assertHasPackage

      private void assertHasPackage(Package expected)
    • hasNoPackage

      public SELF hasNoPackage()
      Verifies that the actual Class has no package (as in Class.getPackage(), when null is returned).

      Example:

       // this assertion succeeds as arrays have no package:
       assertThat(int[].class).hasNoPackage();
      
       // this assertion succeeds as primitive types have no package:
       assertThat(Integer.TYPE).hasNoPackage();
      
       // this assertion succeeds as void type has no package:
       assertThat(Void.TYPE).hasNoPackage();
      
       // this assertion fails as Object has java.lang as package:
       assertThat(Object.class).hasNoPackage();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class has a package.
      Since:
      3.25.0
      See Also:
    • assertHasNoPackage

      private void assertHasNoPackage()
    • isSealed

      public SELF isSealed()
      Verifies that the actual Class is sealed.

      Example:

       sealed class SealedClass permits NonSealedClass {}
      
       non-sealed class NonSealedClass extends SealedClass {}
      
       // this assertion succeeds:
       assertThat(SealedClass.class).isSealed();
      
       // this assertion fails:
       assertThat(NonSealedClass.class).isSealed();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not sealed.
      Since:
      3.25.0
    • assertIsSealed

      private void assertIsSealed()
    • isNotSealed

      public SELF isNotSealed()
      Verifies that the actual Class is not sealed.

      Example:

       sealed class SealedClass permits NonSealedClass {}
      
       non-sealed class NonSealedClass extends SealedClass {}
      
       // this assertion succeeds:
       assertThat(NonSealedClass.class).isNotSealed();
      
       // this assertion fails:
       assertThat(SealedClass.class).isNotSealed();
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is sealed.
      Since:
      3.25.0
    • assertIsNotSealed

      private void assertIsNotSealed()
    • isSealed

      private static boolean isSealed(Class<?> actual)
    • isPrimitive

      public SELF isPrimitive()
      Verifies that the actual Class is a primitive type.

      Example:

       // these assertions succeed:
       assertThat(byte.class).isPrimitive();
       assertThat(short.class).isPrimitive();
       assertThat(int.class).isPrimitive();
       assertThat(long.class).isPrimitive();
       assertThat(float.class).isPrimitive();
       assertThat(double.class).isPrimitive();
       assertThat(boolean.class).isPrimitive();
       assertThat(char.class).isPrimitive();
      
       // this assertion fails as Object is not a primitive type:
       assertThat(Object.class).isPrimitive(); 
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is not a primitive type.
      See Also:
    • isNotPrimitive

      public SELF isNotPrimitive()
      Verifies that the actual Class is not a primitive type.

      Example:

       // this assertion succeeds as Object is not a primitive type:
       assertThat(Object.class).isNotPrimitive();
      
       // these assertions fail:
       assertThat(byte.class).isNotPrimitive();
       assertThat(short.class).isNotPrimitive();
       assertThat(int.class).isNotPrimitive();
       assertThat(long.class).isNotPrimitive();
       assertThat(float.class).isNotPrimitive();
       assertThat(double.class).isNotPrimitive();
       assertThat(boolean.class).isNotPrimitive();
       assertThat(char.class).isNotPrimitive(); 
      Returns:
      this assertions object
      Throws:
      AssertionError - if actual is null.
      AssertionError - if the actual Class is a primitive type.
      See Also: