package org.junit.internal;
import java.io.Serializable;
/**
* This class exists solely to provide a serializable description of a value to be serialized as a field in
* {@link AssumptionViolatedException}. Being a {@link Throwable}, it is required to be {@link Serializable}, but a
* value of type Object provides no guarantee to be serializable. This class works around that limitation as
* {@link AssumptionViolatedException} only every uses the string representation of the value, while still retaining
* backwards compatibility with classes compiled against its class signature before 4.14 and/or deserialization of
* previously serialized instances.
*/
class SerializableValueDescription implements Serializable {
private final String value;
private SerializableValueDescription(Object value) {
this.value = String.valueOf(value);
}
/**
* Factory method that checks to see if the value is already serializable.
* @param value the value to make serializable
* @return The provided value if it is null or already serializable,
* the SerializableValueDescription representation of it if it is not.
*/
static Object asSerializableValue(Object value) {
if (value == null || value instanceof Serializable) {
return value;
} else {
return new SerializableValueDescription(value);
}
}
@Override
public String toString() {
return value;
}
}