DATACMNS-628 - Added converters for JSR-310 backport library.

We now include Spring Converters for the ThreeTen backport project [0].

[0] http://www.threeten.org/threetenbp

src/test/java/org/springframework/data/convert/Jsr310BackPortConvertersUnitTests.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright 2015 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 org.springframework.data.convert;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+import static org.threeten.bp.DateTimeUtils.*;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import org.junit.Test;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.core.convert.support.GenericConversionService;
+import org.threeten.bp.Instant;
+import org.threeten.bp.LocalDate;
+import org.threeten.bp.LocalDateTime;
+import org.threeten.bp.LocalTime;
+
+/**
+ * Unit tests for {@link Jsr310BackPortConverters}.
+ * 
+ * @author Oliver Gierke
+ */
+public class Jsr310BackPortConvertersUnitTests {
+
+	static final Date NOW = new Date();
+	static final ConversionService CONVERSION_SERVICE;
+
+	static {
+
+		GenericConversionService conversionService = new GenericConversionService();
+
+		for (Converter<?, ?> converter : Jsr310BackPortConverters.getConvertersToRegister()) {
+			conversionService.addConverter(converter);
+		}
+
+		CONVERSION_SERVICE = conversionService;
+	}
+
+	/**
+	 * @see DATACMNS-606
+	 */
+	@Test
+	public void convertsDateToLocalDateTime() {
+		assertThat(CONVERSION_SERVICE.convert(NOW, LocalDateTime.class).toString(),
+				is(format(NOW, "yyyy-MM-dd'T'HH:mm:ss.SSS")));
+	}
+
+	/**
+	 * @see DATACMNS-606
+	 */
+	@Test
+	public void convertsLocalDateTimeToDate() {
+
+		LocalDateTime now = LocalDateTime.now();
+		assertThat(format(CONVERSION_SERVICE.convert(now, Date.class), "yyyy-MM-dd'T'HH:mm:ss.SSS"), is(now.toString()));
+	}
+
+	/**
+	 * @see DATACMNS-606
+	 */
+	@Test
+	public void convertsDateToLocalDate() {
+		assertThat(CONVERSION_SERVICE.convert(NOW, LocalDate.class).toString(), is(format(NOW, "yyyy-MM-dd")));
+	}
+
+	/**
+	 * @see DATACMNS-606
+	 */
+	@Test
+	public void convertsLocalDateToDate() {
+
+		LocalDate now = LocalDate.now();
+		assertThat(format(CONVERSION_SERVICE.convert(now, Date.class), "yyyy-MM-dd"), is(now.toString()));
+	}
+
+	/**
+	 * @see DATACMNS-606
+	 */
+	@Test
+	public void convertsDateToLocalTime() {
+		assertThat(CONVERSION_SERVICE.convert(NOW, LocalTime.class).toString(), is(format(NOW, "HH:mm:ss.SSS")));
+	}
+
+	/**
+	 * @see DATACMNS-606
+	 */
+	@Test
+	public void convertsLocalTimeToDate() {
+
+		LocalTime now = LocalTime.now();
+		assertThat(format(CONVERSION_SERVICE.convert(now, Date.class), "HH:mm:ss.SSS"), is(now.toString()));
+	}
+
+	/**
+	 * @see DATACMNS-623
+	 */
+	@Test
+	public void convertsDateToInstant() {
+
+		Date now = new Date();
+		assertThat(CONVERSION_SERVICE.convert(now, Instant.class), is(toInstant(now)));
+	}
+
+	/**
+	 * @see DATACMNS-623
+	 */
+	@Test
+	public void convertsInstantToDate() {
+
+		Date now = new Date();
+		assertThat(CONVERSION_SERVICE.convert(toInstant(now), Date.class), is(now));
+	}
+
+	private static String format(Date date, String format) {
+		return new SimpleDateFormat(format).format(date);
+	}
+}