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Test for ByteBuffer-to-ByteBuffer conversion (fresh copy)

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ByteBufferConverter also defensively returns the rewind result now.

Issue: SPR-13031
This commit is contained in:
Juergen Hoeller
2015-05-18 16:17:11 +02:00
parent 1e7d954fcb
commit 008c9a3b45
2 changed files with 19 additions and 11 deletions
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5
spring-core/src/main/java/org/springframework/core/convert/support/ByteBufferConverter.java
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@@ -97,6 +97,7 @@ final class ByteBufferConverter implements ConditionalGenericConverter {
private Object convertFromByteBuffer(ByteBuffer source, TypeDescriptor targetType) { private Object convertFromByteBuffer(ByteBuffer source, TypeDescriptor targetType) {
byte[] bytes = new byte[source.remaining()]; byte[] bytes = new byte[source.remaining()];
source.get(bytes); source.get(bytes);
if (targetType.isAssignableTo(BYTE_ARRAY_TYPE)) { if (targetType.isAssignableTo(BYTE_ARRAY_TYPE)) {
return bytes; return bytes;
} }
@@ -113,9 +114,7 @@ final class ByteBufferConverter implements ConditionalGenericConverter {
// Extra cast necessary for compiling on JDK 9 plus running on JDK 8, since // Extra cast necessary for compiling on JDK 9 plus running on JDK 8, since
// otherwise the overridden ByteBuffer-returning rewind method would be chosen // otherwise the overridden ByteBuffer-returning rewind method would be chosen
// which isn't available on JDK 8. // which isn't available on JDK 8.
((Buffer) byteBuffer).rewind(); return ((Buffer) byteBuffer).rewind();
return byteBuffer;
} }
} }

25
spring-core/src/test/java/org/springframework/core/convert/support/ByteBufferConverterTests.java
View File

@@ -49,8 +49,8 @@ public class ByteBufferConverterTests {
public void byteArrayToByteBuffer() throws Exception { public void byteArrayToByteBuffer() throws Exception {
byte[] bytes = new byte[] { 1, 2, 3 }; byte[] bytes = new byte[] { 1, 2, 3 };
ByteBuffer convert = this.conversionService.convert(bytes, ByteBuffer.class); ByteBuffer convert = this.conversionService.convert(bytes, ByteBuffer.class);
assertThat(bytes, not(sameInstance(convert.array()))); assertThat(convert.array(), not(sameInstance(bytes)));
assertThat(bytes, equalTo(convert.array())); assertThat(convert.array(), equalTo(bytes));
} }
@Test @Test
@@ -58,8 +58,8 @@ public class ByteBufferConverterTests {
byte[] bytes = new byte[] { 1, 2, 3 }; byte[] bytes = new byte[] { 1, 2, 3 };
ByteBuffer byteBuffer = ByteBuffer.wrap(bytes); ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
byte[] convert = this.conversionService.convert(byteBuffer, byte[].class); byte[] convert = this.conversionService.convert(byteBuffer, byte[].class);
assertThat(bytes, not(sameInstance(convert))); assertThat(convert, not(sameInstance(bytes)));
assertThat(bytes, equalTo(convert)); assertThat(convert, equalTo(bytes));
} }
@Test @Test
@@ -67,8 +67,8 @@ public class ByteBufferConverterTests {
byte[] bytes = new byte[] { 1, 2, 3 }; byte[] bytes = new byte[] { 1, 2, 3 };
ByteBuffer byteBuffer = ByteBuffer.wrap(bytes); ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
OtherType convert = this.conversionService.convert(byteBuffer, OtherType.class); OtherType convert = this.conversionService.convert(byteBuffer, OtherType.class);
assertThat(bytes, not(sameInstance(convert.bytes))); assertThat(convert.bytes, not(sameInstance(bytes)));
assertThat(bytes, equalTo(convert.bytes)); assertThat(convert.bytes, equalTo(bytes));
} }
@Test @Test
@@ -76,8 +76,17 @@ public class ByteBufferConverterTests {
byte[] bytes = new byte[] { 1, 2, 3 }; byte[] bytes = new byte[] { 1, 2, 3 };
OtherType otherType = new OtherType(bytes); OtherType otherType = new OtherType(bytes);
ByteBuffer convert = this.conversionService.convert(otherType, ByteBuffer.class); ByteBuffer convert = this.conversionService.convert(otherType, ByteBuffer.class);
assertThat(bytes, not(sameInstance(convert.array()))); assertThat(convert.array(), not(sameInstance(bytes)));
assertThat(bytes, equalTo(convert.array())); assertThat(convert.array(), equalTo(bytes));
}
@Test
public void byteBufferToByteBuffer() throws Exception {
byte[] bytes = new byte[] { 1, 2, 3 };
ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
ByteBuffer convert = this.conversionService.convert(byteBuffer, ByteBuffer.class);
assertThat(convert, not(sameInstance(byteBuffer.rewind())));
assertThat(convert, equalTo(byteBuffer.rewind()));
} }