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// Test case for Issue 391:
// https://github.com/typetools/checker-framework/issues/391
import org.checkerframework.checker.nullness.qual.EnsuresNonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.checker.nullness.qual.RequiresNonNull;
class ClassA {
private @Nullable String value = null;
@EnsuresNonNull("value")
public void ensuresNonNull() {
value = "";
}
@RequiresNonNull("value")
public String getValue() {
return value;
}
}
public class Issue391 {
ClassA field = new ClassA();
@RequiresNonNull("field.value")
void method() {}
@EnsuresNonNull("field.value")
void ensuresNonNull() {
field.ensuresNonNull();
}
void method2() {
ClassA a = new ClassA();
// :: error: (contracts.precondition.not.satisfied)
a.getValue();
// :: error: (contracts.precondition.not.satisfied)
method();
}
void method3() {
ensuresNonNull();
method();
ClassA a = new ClassA();
a.ensuresNonNull();
a.getValue();
}
}
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