Spring Boot's WebEndpointProperties class configures web endponit properties in actuator applications. This configuration class binds to properties prefixed with management.endpoints.web.

Key components of the class:

1. Base Path Configuraton:

private String basePath = "/actuator";

public String getBasePath() {
    return this.basePath;
}

public void setBasePath(String basePath) {
    Assert.isTrue(basePath.isEmpty() || basePath.startsWith("/"), 
                 "Base path must start with '/' or be empty");
    this.basePath = cleanBasePath(basePath);
}

2. Endpoint Exposure Control:

public static class Exposure {
    private Set<String> include = new LinkedHashSet<>();
    private Set<String> exclude = new LinkedHashSet<>();
    
    // Getter and setter methods
}

3. Path Mapping:

private final Map<String, String> pathMapping = new LinkedHashMap<>();

public Map<String, String> getPathMapping() {
    return this.pathMapping;
}

Configuration example in application.properties:

management.endpoints.web.base-path=/monitoring
management.endpoints.web.exposure.include=health,metrics
management.endpoints.web.path-mapping.health=/system-status

Test case demonstrating validation:

public class WebEndpointPropertiesTest {
    
    @Test
    public void testValidBasePath() {
        WebEndpointProperties properties = new WebEndpointProperties();
        properties.setBasePath("/monitor");
        assertEquals("/monitor", properties.getBasePath());
    }
    
    @Test(expected = IllegalArgumentException.class)
    public void testInvalidBasePath() {
        WebEndpointProperties properties = new WebEndpointProperties();
        properties.setBasePath("monitor"); // Missing leading slash
    }
    
    @Test
    public void testPathMapping() {
        WebEndpointProperties properties = new WebEndpointProperties();
        properties.getPathMapping().put("health", "/status");
        assertEquals("/status", properties.getPathMapping().get("health"));
    }
}