MismatchedTranslationTest.java

package com.codiform.moo;

import java.util.Arrays;
import java.util.List;

import org.junit.Assert;
import org.junit.Test;

import com.codiform.moo.configuration.Configuration;
import com.codiform.moo.curry.Translate;

public class MismatchedTranslationTest {

	@Test(expected = NothingToTranslateException.class)
	public void testThrowsExceptionIfNoCommonProperties() {
		StringValue source = new StringValue( "Source" );
		Configuration configuration = new Configuration();
		configuration.setSourcePropertiesRequired( false );
		Moo moo = new Moo( configuration );
		moo.translate( OtherValue.class ).from( source );
	}

	/**
	 * Should fail, but should fail with an error message that makes the
	 * solution somewhat more obvious.
	 */
	@Test
	public void testTranslationOfArrayToStringFails() {
		try {
			ArrayValue source = new ArrayValue( "one", "two" );
			Translate.to( StringValue.class ).from( source );
			Assert.fail( "Expected a translation exception which didn't occur." );
		} catch( UnsupportedTranslationException exception ) {
			String expectedMessage = "Cannot translate from source array type class java.lang.String[] to destination type java.lang.String";
			Assert.assertEquals( expectedMessage, exception.getMessage() );
		}
	}

	/**
	 * Results in a Translation Exception containing an Illegal Argument
	 * Exception.
	 */
	@Test(expected = IncompatibleTypeTranslationException.class)
	public void testTranslationOfListToStringFails() {
		ListValue source = new ListValue( "one", "two" );
		Translate.to( StringValue.class ).from( source );
	}

	/**
	 * Results in a Translation Exception containing an Illegal Argument
	 * Exception.
	 */
	@Test(expected = IncompatibleTypeTranslationException.class)
	public void testTranslationOfIntegerToStringFails() {
		IntegerValue source = new IntegerValue( 1 );
		Translate.to( StringValue.class ).from( source );
	}

	public static class ArrayValue {
		private String[] value;

		public ArrayValue(String... value) {
			this.value = value;
		}

		public String[] getValue() {
			return value;
		}
	}

	public static class ListValue {
		private List<String> value;

		public ListValue(String... value) {
			this.value = Arrays.asList( value );
		}

		public List<String> getValue() {
			return value;
		}
	}

	public static class StringValue {
		private String value;

		public StringValue() {
			// do nothing
		}

		public StringValue(String value) {
			this.value = value;
		}

		public String getValue() {
			return value;
		}
	}

	public static class OtherValue {
		private String otherValue;

		public String getOtherValue() {
			return otherValue;
		}
	}

	public static class IntegerValue {
		private Integer value;

		public IntegerValue(Integer value) {
			this.value = value;
		}

		public Integer getValue() {
			return value;
		}
	}

}