TypeExtractorMethodsParametersTest.java

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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *        http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.isis.core.runtime.system;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.lang.reflect.Method;
import java.util.List;

import org.junit.Test;

import org.apache.isis.core.commons.matchers.IsisMatchers;
import org.apache.isis.core.metamodel.specloader.traverser.TypeExtractorMethodParameters;

public class TypeExtractorMethodsParametersTest {

    @Test
    public void shouldFindGenericTypes() throws Exception {

        class Customer {
        }
        class CustomerRepository {
            @SuppressWarnings("unused")
            public void filterCustomers(final List<Customer> customerList) {
                ;
            }
        }

        final Class<?> clazz = CustomerRepository.class;
        final Method method = clazz.getMethod("filterCustomers", List.class);

        final TypeExtractorMethodParameters extractor = new TypeExtractorMethodParameters(method);

        assertThat(extractor.getClasses().size(), is(2));
        assertThat(extractor.getClasses(), IsisMatchers.containsElementThat(equalTo(java.util.List.class)));
        assertThat(extractor.getClasses(), IsisMatchers.containsElementThat(equalTo(Customer.class)));
    }

}