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Add unit tests for ProtobufUtil #710

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Add unit tests for ProtobufUtil #710

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50 changes: 50 additions & 0 deletions core/src/test/java/org/infinispan/protostream/ProtobufUtilTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1127,4 +1127,54 @@ public void testStructuredObject() throws IOException {
String converted = ProtobufUtil.toCanonicalJSON(ctx, protobuf);
assertValid(converted);
}

// ---- Additional mutation-coverage tests ----

@Test
public void testWriteToNullObject() throws Exception {
ImmutableSerializationContext ctx = createContext();
assertThrows(NullPointerException.class, () -> ProtobufUtil.toByteArray(ctx, null));
}

@Test
public void testToByteBuffer() throws Exception {
ImmutableSerializationContext ctx = createContext();
Account account = createAccount();

java.nio.ByteBuffer buffer = ProtobufUtil.toByteBuffer(ctx, account);
byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);

Account result = ProtobufUtil.fromByteArray(ctx, bytes, Account.class);
assertEquals(account, result);
}

@Test
public void testFromByteBuffer() throws Exception {
ImmutableSerializationContext ctx = createContext();
Account account = createAccount();

byte[] bytes = ProtobufUtil.toByteArray(ctx, account);
java.nio.ByteBuffer buffer = java.nio.ByteBuffer.wrap(bytes);

Account result = ProtobufUtil.fromByteBuffer(ctx, buffer, Account.class);
assertEquals(account, result);
}

@Test
public void testFromEnumClass() throws Exception {
ImmutableSerializationContext ctx = createContext();
byte[] bytes = ProtobufUtil.toByteArray(ctx, createAccount());
assertThrows(IllegalArgumentException.class, () -> ProtobufUtil.fromByteArray(ctx, bytes, Account.Currency.class));
}

@Test
public void testEstimateSize() throws Exception {
ImmutableSerializationContext ctx = createContext();
Account account = createAccount();

int estimated = ProtobufUtil.estimateSize(ctx, account);
int actual = ProtobufUtil.toByteArray(ctx, account).length;
assertTrue(estimated >= actual, "Estimated size " + estimated + " should be >= actual " + actual);
}
}