Regression test for ResolvedSchema containing SystemType Enum with enumsAsRef enabled

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>swagger-bug</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>io.swagger.core.v3</groupId>
            <artifactId>swagger-core-jakarta</artifactId>
            <version>2.2.8</version>
        </dependency>

        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.3.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.22.0</version>
            </plugin>
        </plugins>
    </build>
</project>

SystemTypeEnumAsRefTest.java

import io.swagger.v3.core.converter.ModelConverters;
import io.swagger.v3.core.converter.ResolvedSchema;
import io.swagger.v3.core.jackson.ModelResolver;
import io.swagger.v3.oas.models.media.Schema;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import java.time.DayOfWeek;
import java.util.Arrays;

class SystemTypeEnumAsRefTest {

	@Test
	void testRefSchemaForSystemTypeEnumIsResolved() {
		ModelResolver.enumsAsRef = true;

		ResolvedSchema schema = ModelConverters.getInstance().readAllAsResolvedSchema(DayOfWeek.class);
		Assertions.assertTrue(schema.referencedSchemas.containsKey("DayOfWeek"));

		Schema<?> enumSchema = schema.referencedSchemas.get("DayOfWeek");
		Assertions.assertEquals(enumSchema.getType(), "string");
		Assertions.assertEquals(
			enumSchema.getEnum(),
			Arrays.asList(
				"MONDAY",
				"TUESDAY",
				"WEDNESDAY",
				"THURSDAY",
				"FRIDAY",
				"SATURDAY",
				"SUNDAY"
			)
		);
	}

}