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import org.checkerframework.checker.nullness.qual.*;
import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf;
/*
* These tests ensure that EnsuresNonNullIf methods
* are verified.
*/
public class EnsuresNonNullIfTestSimple {
protected int @Nullable [] values;
@EnsuresNonNullIf(result = true, expression = "values")
public boolean repNulledBAD() {
// :: error: (contracts.conditional.postcondition.not.satisfied)
return values == null;
}
@EnsuresNonNullIf(result = false, expression = "values")
public boolean repNulled() {
return values == null;
}
public void addAll(EnsuresNonNullIfTestSimple s) {
if (repNulled()) {
return;
}
@NonNull Object x = values;
/* TODO skip-tests
* The two errors are not raised currently
* The assumption that "values" is NN is added above.
* However, as repNulled is not pure, it should be removed again here.
if (s.repNulled()) {
// : : (dereference.of.nullable)
values.hashCode();
} else {
// we called on "s", so we don't know anything about "values".
// : : (assignment.type.incompatible)
@NonNull Object y = values;
}
*/
if (s.repNulled()) {
// :: error: (dereference.of.nullable)
s.values.hashCode();
} else {
@NonNull Object y = s.values;
}
}
}
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