therian.operator.convert.EnumerationToListTest.java Source code

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Here is the source code for therian.operator.convert.EnumerationToListTest.java

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/*
 *  Copyright the original author or authors.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package therian.operator.convert;

import static org.junit.Assert.assertEquals;

import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.StringTokenizer;

import org.apache.commons.lang3.reflect.TypeLiteral;
import org.junit.Test;

import therian.TherianModule;
import therian.operation.Convert;
import therian.operator.OperatorTest;
import therian.util.Positions;

/**
 *
 */
public class EnumerationToListTest extends OperatorTest {

    @Override
    protected TherianModule module() {
        return TherianModule.create().withOperators(new EnumerationToList());
    }

    @Test
    public void test() {
        final String s = "foo bar baz";

        final List<String> expected = Arrays.asList("foo", "bar", "baz");

        final TypeLiteral<Enumeration<String>> enumOfStringType = new TypeLiteral<Enumeration<String>>() {
        };

        assertEquals(expected, therianContext.eval(Convert.to(new TypeLiteral<Iterable<String>>() {
        }, Positions.readOnly(enumOfStringType, tokenize(s)))));

        assertEquals(expected, therianContext.eval(Convert.to(new TypeLiteral<List<String>>() {
        }, Positions.readOnly(enumOfStringType, tokenize(s)))));

        assertEquals(expected, therianContext.eval(Convert.to(new TypeLiteral<List<Object>>() {
        }, Positions.readOnly(enumOfStringType, tokenize(s)))));
    }

    private Enumeration<String> tokenize(String s) {
        final StringTokenizer tok = new StringTokenizer(s);
        return new Enumeration<String>() {

            @Override
            public String nextElement() {
                return tok.nextToken();
            }

            @Override
            public boolean hasMoreElements() {
                return tok.hasMoreElements();
            }
        };
    }
}