info.javaspec.spec.SpecExecutionContext Maven / Gradle / Ivy
package info.javaspec.spec;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
/**
* An instance of the object(s) in which a spec exists and executes.
*
* When multiple specs are in the same (declaration) context, a distinct execution context will be used for each spec.
*/
final class SpecExecutionContext {
private final Map, Object> instances = new HashMap<>();
public static SpecExecutionContext forDeclaringClass(Class declaringClass) {
SpecExecutionContext executionContext = new SpecExecutionContext();
executionContext.makeAndRememberInstance(declaringClass);
return executionContext;
}
private SpecExecutionContext() { }
public Object getAssignedValue(Field field) {
Class declaringClass = field.getDeclaringClass();
try {
Object declaredContext = instances.get(declaringClass);
field.setAccessible(true);
return field.get(declaredContext);
} catch(Throwable t) {
throw TestSetupFailed.forClass(declaringClass, t);
}
}
private Object makeAndRememberInstance(Class contextClass) {
Object context = makeInstance(contextClass);
instances.put(contextClass, context);
return context;
}
private Object makeInstance(Class contextClass) {
Class enclosingClass = contextClass.getEnclosingClass();
if(enclosingClass == null || Modifier.isStatic(contextClass.getModifiers())) {
return new OuterClassFactory().makeInstance(contextClass);
} else {
Object enclosingObject = makeAndRememberInstance(enclosingClass);
return new InnerClassFactory(enclosingClass, enclosingObject).makeInstance(contextClass);
}
}
}