IndexedContainerProperty.setValue(...)

Originally by psc1952

The "setValue" method of IndexedContainerProperty, line 941 has the following:

} else if (getType().isAssignableFrom(newValue.getClass())) {

Since 'newValue' is an Object, the above code will fail if 'getType()' returns a boolean. See below:

    /**
     - Determines if the class or interface represented by this
     - {@code Class} object is either the same as, or is a superclass or
     - superinterface of, the class or interface represented by the specified
     - {@code Class} parameter. It returns {@code true} if so;
     - otherwise it returns {@code false}. If this {@code Class}
     - object represents a primitive type, this method returns
     - {@code true} if the specified {@code Class} parameter is
     - exactly this {@code Class} object; otherwise it returns
     - {@code false}.
     -
     - <p> Specifically, this method tests whether the type represented by the
     - specified {@code Class} parameter can be converted to the type
     - represented by this {@code Class} object via an identity conversion
     - or via a widening reference conversion. See <em>The Java Language
     - Specification</em>, sections 5.1.1 and 5.1.4 , for details.
     -
     - @param cls the {@code Class} object to be checked
     - @return the {@code boolean} value indicating whether objects of the
     - type {@code cls} can be assigned to objects of this class
     - @exception NullPointerException if the specified Class parameter is
     -            null.
     - @since JDK1.1
     -/
    public native boolean isAssignableFrom(Class<?> cls);

With 'getType()' returning a boolean, an error will occur every time. Extra code needs to be added to check for boxing.

Imported from https://dev.vaadin.com/ issue #19662

Start with IndexedContainerProperty.setValue(...) around line 941 and inspect how its type check handles primitive boolean values. Add coverage for the reported boolean case and confirm that setting a boolean-typed property no longer fails because the runtime value is an object.